From 1f2edbe3fe2111a59fcd1bb3b9725066bc9ed686 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sun, 13 Apr 2014 11:11:31 -0400 Subject: NFS: Don't ignore suid/sgid bit changes after a successful write If we suspect that the server may have cleared the suid/sgid bit, then mark the inode for revalidation. Reported-by: Kinglong Mee Signed-off-by: Trond Myklebust --- fs/nfs/write.c | 35 +++++++++++++++++++++++++++++++++-- 1 file changed, 33 insertions(+), 2 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 9a3b6a4cd6b..cd7c651f9b8 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -1353,6 +1353,30 @@ static const struct rpc_call_ops nfs_write_common_ops = { .rpc_release = nfs_writeback_release_common, }; +/* + * Special version of should_remove_suid() that ignores capabilities. + */ +static int nfs_should_remove_suid(const struct inode *inode) +{ + umode_t mode = inode->i_mode; + int kill = 0; + + /* suid always must be killed */ + if (unlikely(mode & S_ISUID)) + kill = ATTR_KILL_SUID; + + /* + * sgid without any exec bits is just a mandatory locking mark; leave + * it alone. If some exec bits are set, it's a real sgid; kill it. + */ + if (unlikely((mode & S_ISGID) && (mode & S_IXGRP))) + kill |= ATTR_KILL_SGID; + + if (unlikely(kill && S_ISREG(mode))) + return kill; + + return 0; +} /* * This function is called when the WRITE call is complete. @@ -1401,9 +1425,16 @@ void nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data) } } #endif - if (task->tk_status < 0) + if (task->tk_status < 0) { nfs_set_pgio_error(data->header, task->tk_status, argp->offset); - else if (resp->count < argp->count) { + return; + } + + /* Deal with the suid/sgid bit corner case */ + if (nfs_should_remove_suid(inode)) + nfs_mark_for_revalidate(inode); + + if (resp->count < argp->count) { static unsigned long complain; /* This a short write! */ -- cgit v1.2.3-70-g09d2 From 4e857c58efeb99393cba5a5d0d8ec7117183137c Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Mon, 17 Mar 2014 18:06:10 +0100 Subject: arch: Mass conversion of smp_mb__*() Mostly scripted conversion of the smp_mb__* barriers. Signed-off-by: Peter Zijlstra Acked-by: Paul E. McKenney Link: http://lkml.kernel.org/n/tip-55dhyhocezdw1dg7u19hmh1u@git.kernel.org Cc: Linus Torvalds Cc: linux-arch@vger.kernel.org Signed-off-by: Ingo Molnar --- block/blk-iopoll.c | 4 +- crypto/chainiv.c | 2 +- drivers/base/power/domain.c | 2 +- drivers/block/mtip32xx/mtip32xx.c | 4 +- drivers/cpuidle/coupled.c | 2 +- drivers/firewire/ohci.c | 2 +- drivers/gpu/drm/drm_irq.c | 10 ++-- drivers/gpu/drm/i915/i915_irq.c | 2 +- drivers/md/bcache/bcache.h | 2 +- drivers/md/bcache/closure.h | 2 +- drivers/md/dm-bufio.c | 8 ++-- drivers/md/dm-snap.c | 4 +- drivers/md/dm.c | 2 +- drivers/md/raid5.c | 2 +- drivers/media/usb/dvb-usb-v2/dvb_usb_core.c | 6 +-- drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c | 6 +-- drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 18 ++++---- drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.c | 26 +++++------ drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c | 8 ++-- drivers/net/ethernet/broadcom/cnic.c | 8 ++-- drivers/net/ethernet/brocade/bna/bnad.c | 6 +-- drivers/net/ethernet/chelsio/cxgb/cxgb2.c | 2 +- drivers/net/ethernet/chelsio/cxgb3/sge.c | 6 +-- drivers/net/ethernet/chelsio/cxgb4/sge.c | 2 +- drivers/net/ethernet/chelsio/cxgb4vf/sge.c | 2 +- drivers/net/ethernet/freescale/gianfar.c | 8 ++-- drivers/net/ethernet/intel/i40e/i40e_main.c | 2 +- drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 8 ++-- drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 6 +-- drivers/net/wireless/ti/wlcore/main.c | 2 +- drivers/pci/xen-pcifront.c | 4 +- drivers/scsi/isci/remote_device.c | 2 +- drivers/target/loopback/tcm_loop.c | 4 +- drivers/target/target_core_alua.c | 26 +++++------ drivers/target/target_core_device.c | 6 +-- drivers/target/target_core_iblock.c | 2 +- drivers/target/target_core_pr.c | 56 +++++++++++------------ drivers/target/target_core_transport.c | 16 +++---- drivers/target/target_core_ua.c | 10 ++-- drivers/tty/n_tty.c | 2 +- drivers/tty/serial/mxs-auart.c | 4 +- drivers/usb/gadget/tcm_usb_gadget.c | 4 +- drivers/usb/serial/usb_wwan.c | 2 +- drivers/vhost/scsi.c | 2 +- drivers/w1/w1_family.c | 4 +- drivers/xen/xen-pciback/pciback_ops.c | 4 +- fs/btrfs/btrfs_inode.h | 2 +- fs/btrfs/extent_io.c | 2 +- fs/btrfs/inode.c | 6 +-- fs/btrfs/ioctl.c | 2 +- fs/buffer.c | 2 +- fs/ext4/resize.c | 2 +- fs/gfs2/glock.c | 8 ++-- fs/gfs2/glops.c | 2 +- fs/gfs2/lock_dlm.c | 4 +- fs/gfs2/recovery.c | 2 +- fs/gfs2/sys.c | 4 +- fs/jbd2/commit.c | 6 +-- fs/nfs/dir.c | 12 ++--- fs/nfs/inode.c | 2 +- fs/nfs/nfs4filelayoutdev.c | 4 +- fs/nfs/nfs4state.c | 4 +- fs/nfs/pagelist.c | 6 +-- fs/nfs/pnfs.c | 2 +- fs/nfs/pnfs.h | 2 +- fs/nfs/write.c | 4 +- fs/ubifs/lpt_commit.c | 4 +- fs/ubifs/tnc_commit.c | 4 +- include/asm-generic/bitops/atomic.h | 2 +- include/asm-generic/bitops/lock.h | 2 +- include/linux/buffer_head.h | 2 +- include/linux/genhd.h | 2 +- include/linux/interrupt.h | 8 ++-- include/linux/netdevice.h | 2 +- include/linux/sched.h | 6 +-- include/linux/sunrpc/sched.h | 8 ++-- include/linux/sunrpc/xprt.h | 8 ++-- include/linux/tracehook.h | 2 +- include/net/ip_vs.h | 4 +- kernel/debug/debug_core.c | 4 +- kernel/futex.c | 4 +- kernel/kmod.c | 2 +- kernel/rcu/tree.c | 22 ++++----- kernel/rcu/tree_plugin.h | 8 ++-- kernel/sched/cpupri.c | 6 +-- kernel/sched/wait.c | 2 +- mm/backing-dev.c | 2 +- mm/filemap.c | 4 +- net/atm/pppoatm.c | 2 +- net/bluetooth/hci_event.c | 4 +- net/core/dev.c | 8 ++-- net/core/link_watch.c | 2 +- net/ipv4/inetpeer.c | 2 +- net/ipv4/tcp_output.c | 4 +- net/netfilter/nf_conntrack_core.c | 2 +- net/rds/ib_recv.c | 4 +- net/rds/iw_recv.c | 4 +- net/rds/send.c | 6 +-- net/rds/tcp_send.c | 2 +- net/sunrpc/auth.c | 2 +- net/sunrpc/auth_gss/auth_gss.c | 2 +- net/sunrpc/backchannel_rqst.c | 4 +- net/sunrpc/xprt.c | 4 +- net/sunrpc/xprtsock.c | 16 +++---- net/unix/af_unix.c | 2 +- sound/pci/bt87x.c | 4 +- 106 files changed, 284 insertions(+), 288 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/block/blk-iopoll.c b/block/blk-iopoll.c index c11d24e379e..f8c6a11b13f 100644 --- a/block/blk-iopoll.c +++ b/block/blk-iopoll.c @@ -49,7 +49,7 @@ EXPORT_SYMBOL(blk_iopoll_sched); void __blk_iopoll_complete(struct blk_iopoll *iop) { list_del(&iop->list); - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit_unlock(IOPOLL_F_SCHED, &iop->state); } EXPORT_SYMBOL(__blk_iopoll_complete); @@ -161,7 +161,7 @@ EXPORT_SYMBOL(blk_iopoll_disable); void blk_iopoll_enable(struct blk_iopoll *iop) { BUG_ON(!test_bit(IOPOLL_F_SCHED, &iop->state)); - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit_unlock(IOPOLL_F_SCHED, &iop->state); } EXPORT_SYMBOL(blk_iopoll_enable); diff --git a/crypto/chainiv.c b/crypto/chainiv.c index 834d8dd3d4f..9c294c8f9a0 100644 --- a/crypto/chainiv.c +++ b/crypto/chainiv.c @@ -126,7 +126,7 @@ static int async_chainiv_schedule_work(struct async_chainiv_ctx *ctx) int err = ctx->err; if (!ctx->queue.qlen) { - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(CHAINIV_STATE_INUSE, &ctx->state); if (!ctx->queue.qlen || diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index ae098a261fc..eee55c1e5fd 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -105,7 +105,7 @@ static bool genpd_sd_counter_dec(struct generic_pm_domain *genpd) static void genpd_sd_counter_inc(struct generic_pm_domain *genpd) { atomic_inc(&genpd->sd_count); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); } static void genpd_acquire_lock(struct generic_pm_domain *genpd) diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c index 59c5abe32f0..4fd8d6c1c3d 100644 --- a/drivers/block/mtip32xx/mtip32xx.c +++ b/drivers/block/mtip32xx/mtip32xx.c @@ -224,9 +224,9 @@ static int get_slot(struct mtip_port *port) */ static inline void release_slot(struct mtip_port *port, int tag) { - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(tag, port->allocated); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); } /* diff --git a/drivers/cpuidle/coupled.c b/drivers/cpuidle/coupled.c index cb6654bfad7..73fe2f8d7f9 100644 --- a/drivers/cpuidle/coupled.c +++ b/drivers/cpuidle/coupled.c @@ -159,7 +159,7 @@ void cpuidle_coupled_parallel_barrier(struct cpuidle_device *dev, atomic_t *a) { int n = dev->coupled->online_count; - smp_mb__before_atomic_inc(); + smp_mb__before_atomic(); atomic_inc(a); while (atomic_read(a) < n) diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c index 8db66321956..995dd42a262 100644 --- a/drivers/firewire/ohci.c +++ b/drivers/firewire/ohci.c @@ -3498,7 +3498,7 @@ static int ohci_flush_iso_completions(struct fw_iso_context *base) } clear_bit_unlock(0, &ctx->flushing_completions); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); } tasklet_enable(&ctx->context.tasklet); diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c index c2676b5908d..ec5c3f4cdd0 100644 --- a/drivers/gpu/drm/drm_irq.c +++ b/drivers/gpu/drm/drm_irq.c @@ -156,7 +156,7 @@ static void vblank_disable_and_save(struct drm_device *dev, int crtc) */ if ((vblrc > 0) && (abs64(diff_ns) > 1000000)) { atomic_inc(&dev->vblank[crtc].count); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); } /* Invalidate all timestamps while vblank irq's are off. */ @@ -864,9 +864,9 @@ static void drm_update_vblank_count(struct drm_device *dev, int crtc) vblanktimestamp(dev, crtc, tslot) = t_vblank; } - smp_mb__before_atomic_inc(); + smp_mb__before_atomic(); atomic_add(diff, &dev->vblank[crtc].count); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); } /** @@ -1330,9 +1330,9 @@ bool drm_handle_vblank(struct drm_device *dev, int crtc) /* Increment cooked vblank count. This also atomically commits * the timestamp computed above. */ - smp_mb__before_atomic_inc(); + smp_mb__before_atomic(); atomic_inc(&dev->vblank[crtc].count); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); } else { DRM_DEBUG("crtc %d: Redundant vblirq ignored. diff_ns = %d\n", crtc, (int) diff_ns); diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 7753249b3a9..5409bfafff6 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -2147,7 +2147,7 @@ static void i915_error_work_func(struct work_struct *work) * updates before * the counter increment. */ - smp_mb__before_atomic_inc(); + smp_mb__before_atomic(); atomic_inc(&dev_priv->gpu_error.reset_counter); kobject_uevent_env(&dev->primary->kdev->kobj, diff --git a/drivers/md/bcache/bcache.h b/drivers/md/bcache/bcache.h index 82c9c5d3525..d2ebcf32309 100644 --- a/drivers/md/bcache/bcache.h +++ b/drivers/md/bcache/bcache.h @@ -828,7 +828,7 @@ static inline bool cached_dev_get(struct cached_dev *dc) return false; /* Paired with the mb in cached_dev_attach */ - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); return true; } diff --git a/drivers/md/bcache/closure.h b/drivers/md/bcache/closure.h index 7ef7461912b..a08e3eeac3c 100644 --- a/drivers/md/bcache/closure.h +++ b/drivers/md/bcache/closure.h @@ -243,7 +243,7 @@ static inline void set_closure_fn(struct closure *cl, closure_fn *fn, cl->fn = fn; cl->wq = wq; /* between atomic_dec() in closure_put() */ - smp_mb__before_atomic_dec(); + smp_mb__before_atomic(); } static inline void closure_queue(struct closure *cl) diff --git a/drivers/md/dm-bufio.c b/drivers/md/dm-bufio.c index 66c5d130c8c..4e84095833d 100644 --- a/drivers/md/dm-bufio.c +++ b/drivers/md/dm-bufio.c @@ -607,9 +607,9 @@ static void write_endio(struct bio *bio, int error) BUG_ON(!test_bit(B_WRITING, &b->state)); - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(B_WRITING, &b->state); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&b->state, B_WRITING); } @@ -997,9 +997,9 @@ static void read_endio(struct bio *bio, int error) BUG_ON(!test_bit(B_READING, &b->state)); - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(B_READING, &b->state); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&b->state, B_READING); } diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c index ebddef5237e..8e0caed0bf7 100644 --- a/drivers/md/dm-snap.c +++ b/drivers/md/dm-snap.c @@ -642,7 +642,7 @@ static void free_pending_exception(struct dm_snap_pending_exception *pe) struct dm_snapshot *s = pe->snap; mempool_free(pe, s->pending_pool); - smp_mb__before_atomic_dec(); + smp_mb__before_atomic(); atomic_dec(&s->pending_exceptions_count); } @@ -783,7 +783,7 @@ static int init_hash_tables(struct dm_snapshot *s) static void merge_shutdown(struct dm_snapshot *s) { clear_bit_unlock(RUNNING_MERGE, &s->state_bits); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&s->state_bits, RUNNING_MERGE); } diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 455e6491649..2db768e4553 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -2447,7 +2447,7 @@ static void dm_wq_work(struct work_struct *work) static void dm_queue_flush(struct mapped_device *md) { clear_bit(DMF_BLOCK_IO_FOR_SUSPEND, &md->flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); queue_work(md->wq, &md->work); } diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index ad1b9bea446..2afef4ec931 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -4400,7 +4400,7 @@ static void raid5_unplug(struct blk_plug_cb *blk_cb, bool from_schedule) * STRIPE_ON_UNPLUG_LIST clear but the stripe * is still in our list */ - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(STRIPE_ON_UNPLUG_LIST, &sh->state); /* * STRIPE_ON_RELEASE_LIST could be set here. In that diff --git a/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c b/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c index de02db802ac..e3558061893 100644 --- a/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c +++ b/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c @@ -399,7 +399,7 @@ static int dvb_usb_stop_feed(struct dvb_demux_feed *dvbdmxfeed) /* clear 'streaming' status bit */ clear_bit(ADAP_STREAMING, &adap->state_bits); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&adap->state_bits, ADAP_STREAMING); skip_feed_stop: @@ -550,7 +550,7 @@ static int dvb_usb_fe_init(struct dvb_frontend *fe) err: if (!adap->suspend_resume_active) { clear_bit(ADAP_INIT, &adap->state_bits); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&adap->state_bits, ADAP_INIT); } @@ -591,7 +591,7 @@ err: if (!adap->suspend_resume_active) { adap->active_fe = -1; clear_bit(ADAP_SLEEP, &adap->state_bits); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&adap->state_bits, ADAP_SLEEP); } diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c index 9261d5313b5..dd57c7c5a3d 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c @@ -2781,7 +2781,7 @@ int bnx2x_nic_load(struct bnx2x *bp, int load_mode) case LOAD_OPEN: netif_tx_start_all_queues(bp->dev); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); break; case LOAD_DIAG: @@ -4939,9 +4939,9 @@ void bnx2x_update_coalesce_sb_index(struct bnx2x *bp, u8 fw_sb_id, void bnx2x_schedule_sp_rtnl(struct bnx2x *bp, enum sp_rtnl_flag flag, u32 verbose) { - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); set_bit(flag, &bp->sp_rtnl_state); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); DP((BNX2X_MSG_SP | verbose), "Scheduling sp_rtnl task [Flag: %d]\n", flag); schedule_delayed_work(&bp->sp_rtnl_task, 0); diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c index a78edacccee..16391db2e8c 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c @@ -1858,10 +1858,10 @@ void bnx2x_sp_event(struct bnx2x_fastpath *fp, union eth_rx_cqe *rr_cqe) return; #endif - smp_mb__before_atomic_inc(); + smp_mb__before_atomic(); atomic_inc(&bp->cq_spq_left); /* push the change in bp->spq_left and towards the memory */ - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); DP(BNX2X_MSG_SP, "bp->cq_spq_left %x\n", atomic_read(&bp->cq_spq_left)); @@ -1876,11 +1876,11 @@ void bnx2x_sp_event(struct bnx2x_fastpath *fp, union eth_rx_cqe *rr_cqe) * sp_state is cleared, and this order prevents * races */ - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); set_bit(BNX2X_AFEX_PENDING_VIFSET_MCP_ACK, &bp->sp_state); wmb(); clear_bit(BNX2X_AFEX_FCOE_Q_UPDATE_PENDING, &bp->sp_state); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); /* schedule the sp task as mcp ack is required */ bnx2x_schedule_sp_task(bp); @@ -5272,9 +5272,9 @@ static void bnx2x_after_function_update(struct bnx2x *bp) __clear_bit(RAMROD_COMP_WAIT, &queue_params.ramrod_flags); /* mark latest Q bit */ - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); set_bit(BNX2X_AFEX_FCOE_Q_UPDATE_PENDING, &bp->sp_state); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); /* send Q update ramrod for FCoE Q */ rc = bnx2x_queue_state_change(bp, &queue_params); @@ -5500,7 +5500,7 @@ next_spqe: spqe_cnt++; } /* for */ - smp_mb__before_atomic_inc(); + smp_mb__before_atomic(); atomic_add(spqe_cnt, &bp->eq_spq_left); bp->eq_cons = sw_cons; @@ -13869,9 +13869,9 @@ static int bnx2x_drv_ctl(struct net_device *dev, struct drv_ctl_info *ctl) case DRV_CTL_RET_L2_SPQ_CREDIT_CMD: { int count = ctl->data.credit.credit_count; - smp_mb__before_atomic_inc(); + smp_mb__before_atomic(); atomic_add(count, &bp->cq_spq_left); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); break; } case DRV_CTL_ULP_REGISTER_CMD: { diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.c index 31297266b74..d725317c427 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.c @@ -258,16 +258,16 @@ static bool bnx2x_raw_check_pending(struct bnx2x_raw_obj *o) static void bnx2x_raw_clear_pending(struct bnx2x_raw_obj *o) { - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(o->state, o->pstate); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); } static void bnx2x_raw_set_pending(struct bnx2x_raw_obj *o) { - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); set_bit(o->state, o->pstate); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); } /** @@ -2131,7 +2131,7 @@ static int bnx2x_set_rx_mode_e1x(struct bnx2x *bp, /* The operation is completed */ clear_bit(p->state, p->pstate); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); return 0; } @@ -3576,16 +3576,16 @@ error_exit1: static void bnx2x_mcast_clear_sched(struct bnx2x_mcast_obj *o) { - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(o->sched_state, o->raw.pstate); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); } static void bnx2x_mcast_set_sched(struct bnx2x_mcast_obj *o) { - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); set_bit(o->sched_state, o->raw.pstate); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); } static bool bnx2x_mcast_check_sched(struct bnx2x_mcast_obj *o) @@ -4200,7 +4200,7 @@ int bnx2x_queue_state_change(struct bnx2x *bp, if (rc) { o->next_state = BNX2X_Q_STATE_MAX; clear_bit(pending_bit, pending); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); return rc; } @@ -4288,7 +4288,7 @@ static int bnx2x_queue_comp_cmd(struct bnx2x *bp, wmb(); clear_bit(cmd, &o->pending); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); return 0; } @@ -5279,7 +5279,7 @@ static inline int bnx2x_func_state_change_comp(struct bnx2x *bp, wmb(); clear_bit(cmd, &o->pending); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); return 0; } @@ -5926,7 +5926,7 @@ int bnx2x_func_state_change(struct bnx2x *bp, if (rc) { o->next_state = BNX2X_F_STATE_MAX; clear_bit(cmd, pending); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); return rc; } diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c index 5c523b32db7..f82ac5ac233 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c @@ -1626,9 +1626,9 @@ static void bnx2x_vf_handle_filters_eqe(struct bnx2x *bp, struct bnx2x_virtf *vf) { - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(BNX2X_FILTER_RX_MODE_PENDING, &vf->filter_state); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); } static void bnx2x_vf_handle_rss_update_eqe(struct bnx2x *bp, @@ -2960,9 +2960,9 @@ void bnx2x_iov_task(struct work_struct *work) void bnx2x_schedule_iov_task(struct bnx2x *bp, enum bnx2x_iov_flag flag) { - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); set_bit(flag, &bp->iov_task_state); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); DP(BNX2X_MSG_IOV, "Scheduling iov task [Flag: %d]\n", flag); queue_delayed_work(bnx2x_iov_wq, &bp->iov_task, 0); } diff --git a/drivers/net/ethernet/broadcom/cnic.c b/drivers/net/ethernet/broadcom/cnic.c index 09f3fefcbf9..4dd48d2fa80 100644 --- a/drivers/net/ethernet/broadcom/cnic.c +++ b/drivers/net/ethernet/broadcom/cnic.c @@ -436,7 +436,7 @@ static int cnic_offld_prep(struct cnic_sock *csk) static int cnic_close_prep(struct cnic_sock *csk) { clear_bit(SK_F_CONNECT_START, &csk->flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) { while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags)) @@ -450,7 +450,7 @@ static int cnic_close_prep(struct cnic_sock *csk) static int cnic_abort_prep(struct cnic_sock *csk) { clear_bit(SK_F_CONNECT_START, &csk->flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags)) msleep(1); @@ -3646,7 +3646,7 @@ static int cnic_cm_destroy(struct cnic_sock *csk) csk_hold(csk); clear_bit(SK_F_INUSE, &csk->flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); while (atomic_read(&csk->ref_count) != 1) msleep(1); cnic_cm_cleanup(csk); @@ -4026,7 +4026,7 @@ static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe) L4_KCQE_COMPLETION_STATUS_PARITY_ERROR) set_bit(SK_F_HW_ERR, &csk->flags); - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(SK_F_OFFLD_SCHED, &csk->flags); cnic_cm_upcall(cp, csk, opcode); break; diff --git a/drivers/net/ethernet/brocade/bna/bnad.c b/drivers/net/ethernet/brocade/bna/bnad.c index 675550fe8ee..3a77f9ead00 100644 --- a/drivers/net/ethernet/brocade/bna/bnad.c +++ b/drivers/net/ethernet/brocade/bna/bnad.c @@ -249,7 +249,7 @@ bnad_tx_complete(struct bnad *bnad, struct bna_tcb *tcb) if (likely(test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags))) bna_ib_ack(tcb->i_dbell, sent); - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags); return sent; @@ -1126,7 +1126,7 @@ bnad_tx_cleanup(struct delayed_work *work) bnad_txq_cleanup(bnad, tcb); - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags); } @@ -2992,7 +2992,7 @@ bnad_start_xmit(struct sk_buff *skb, struct net_device *netdev) sent = bnad_txcmpl_process(bnad, tcb); if (likely(test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags))) bna_ib_ack(tcb->i_dbell, sent); - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags); } else { netif_stop_queue(netdev); diff --git a/drivers/net/ethernet/chelsio/cxgb/cxgb2.c b/drivers/net/ethernet/chelsio/cxgb/cxgb2.c index 0fe7ff750d7..05613a85ce6 100644 --- a/drivers/net/ethernet/chelsio/cxgb/cxgb2.c +++ b/drivers/net/ethernet/chelsio/cxgb/cxgb2.c @@ -281,7 +281,7 @@ static int cxgb_close(struct net_device *dev) if (adapter->params.stats_update_period && !(adapter->open_device_map & PORT_MASK)) { /* Stop statistics accumulation. */ - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); spin_lock(&adapter->work_lock); /* sync with update task */ spin_unlock(&adapter->work_lock); cancel_mac_stats_update(adapter); diff --git a/drivers/net/ethernet/chelsio/cxgb3/sge.c b/drivers/net/ethernet/chelsio/cxgb3/sge.c index 8b069f96e92..3dfcf600fcc 100644 --- a/drivers/net/ethernet/chelsio/cxgb3/sge.c +++ b/drivers/net/ethernet/chelsio/cxgb3/sge.c @@ -1379,7 +1379,7 @@ static inline int check_desc_avail(struct adapter *adap, struct sge_txq *q, struct sge_qset *qs = txq_to_qset(q, qid); set_bit(qid, &qs->txq_stopped); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); if (should_restart_tx(q) && test_and_clear_bit(qid, &qs->txq_stopped)) @@ -1492,7 +1492,7 @@ static void restart_ctrlq(unsigned long data) if (!skb_queue_empty(&q->sendq)) { set_bit(TXQ_CTRL, &qs->txq_stopped); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); if (should_restart_tx(q) && test_and_clear_bit(TXQ_CTRL, &qs->txq_stopped)) @@ -1697,7 +1697,7 @@ again: reclaim_completed_tx(adap, q, TX_RECLAIM_CHUNK); if (unlikely(q->size - q->in_use < ndesc)) { set_bit(TXQ_OFLD, &qs->txq_stopped); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); if (should_restart_tx(q) && test_and_clear_bit(TXQ_OFLD, &qs->txq_stopped)) diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c index ca95cf2954e..e249528c8e6 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/sge.c +++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c @@ -2031,7 +2031,7 @@ static void sge_rx_timer_cb(unsigned long data) struct sge_fl *fl = s->egr_map[id]; clear_bit(id, s->starving_fl); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); if (fl_starving(fl)) { rxq = container_of(fl, struct sge_eth_rxq, fl); diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/sge.c b/drivers/net/ethernet/chelsio/cxgb4vf/sge.c index 9cfa4b4bb08..9d88c1d50b4 100644 --- a/drivers/net/ethernet/chelsio/cxgb4vf/sge.c +++ b/drivers/net/ethernet/chelsio/cxgb4vf/sge.c @@ -1951,7 +1951,7 @@ static void sge_rx_timer_cb(unsigned long data) struct sge_fl *fl = s->egr_map[id]; clear_bit(id, s->starving_fl); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); /* * Since we are accessing fl without a lock there's a diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c index 9125d9abf09..d82f092cae9 100644 --- a/drivers/net/ethernet/freescale/gianfar.c +++ b/drivers/net/ethernet/freescale/gianfar.c @@ -1797,9 +1797,9 @@ void stop_gfar(struct net_device *dev) netif_tx_stop_all_queues(dev); - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); set_bit(GFAR_DOWN, &priv->state); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); disable_napi(priv); @@ -2042,9 +2042,9 @@ int startup_gfar(struct net_device *ndev) gfar_init_tx_rx_base(priv); - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(GFAR_DOWN, &priv->state); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); /* Start Rx/Tx DMA and enable the interrupts */ gfar_start(priv); diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index 861b722c267..1e526c072a4 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -4671,7 +4671,7 @@ static void i40e_service_event_complete(struct i40e_pf *pf) BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state)); /* flush memory to make sure state is correct before next watchog */ - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(__I40E_SERVICE_SCHED, &pf->state); } diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index c4c526b7f99..2fecc2626de 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -376,7 +376,7 @@ static void ixgbe_service_event_complete(struct ixgbe_adapter *adapter) BUG_ON(!test_bit(__IXGBE_SERVICE_SCHED, &adapter->state)); /* flush memory to make sure state is correct before next watchdog */ - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state); } @@ -4671,7 +4671,7 @@ static void ixgbe_up_complete(struct ixgbe_adapter *adapter) if (hw->mac.ops.enable_tx_laser) hw->mac.ops.enable_tx_laser(hw); - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(__IXGBE_DOWN, &adapter->state); ixgbe_napi_enable_all(adapter); @@ -5567,7 +5567,7 @@ static int ixgbe_resume(struct pci_dev *pdev) e_dev_err("Cannot enable PCI device from suspend\n"); return err; } - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(__IXGBE_DISABLED, &adapter->state); pci_set_master(pdev); @@ -8541,7 +8541,7 @@ static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev) e_err(probe, "Cannot re-enable PCI device after reset.\n"); result = PCI_ERS_RESULT_DISCONNECT; } else { - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(__IXGBE_DISABLED, &adapter->state); adapter->hw.hw_addr = adapter->io_addr; pci_set_master(pdev); diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c index d0799e8e31e..de2793b0630 100644 --- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c @@ -1668,7 +1668,7 @@ static void ixgbevf_up_complete(struct ixgbevf_adapter *adapter) spin_unlock_bh(&adapter->mbx_lock); - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(__IXGBEVF_DOWN, &adapter->state); ixgbevf_napi_enable_all(adapter); @@ -3354,7 +3354,7 @@ static int ixgbevf_resume(struct pci_dev *pdev) dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n"); return err; } - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(__IXGBEVF_DISABLED, &adapter->state); pci_set_master(pdev); @@ -3712,7 +3712,7 @@ static pci_ers_result_t ixgbevf_io_slot_reset(struct pci_dev *pdev) return PCI_ERS_RESULT_DISCONNECT; } - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(__IXGBEVF_DISABLED, &adapter->state); pci_set_master(pdev); diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c index ed88d391348..e71eae35336 100644 --- a/drivers/net/wireless/ti/wlcore/main.c +++ b/drivers/net/wireless/ti/wlcore/main.c @@ -543,7 +543,7 @@ static int wlcore_irq_locked(struct wl1271 *wl) * wl1271_ps_elp_wakeup cannot be called concurrently. */ clear_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); ret = wlcore_fw_status(wl, wl->fw_status); if (ret < 0) diff --git a/drivers/pci/xen-pcifront.c b/drivers/pci/xen-pcifront.c index 179b8edc226..53df39a22c8 100644 --- a/drivers/pci/xen-pcifront.c +++ b/drivers/pci/xen-pcifront.c @@ -662,9 +662,9 @@ static void pcifront_do_aer(struct work_struct *data) notify_remote_via_evtchn(pdev->evtchn); /*in case of we lost an aer request in four lines time_window*/ - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(_PDEVB_op_active, &pdev->flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); schedule_pcifront_aer_op(pdev); diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index 96a26f45467..cc51f38b116 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -1541,7 +1541,7 @@ void isci_remote_device_release(struct kref *kref) clear_bit(IDEV_STOP_PENDING, &idev->flags); clear_bit(IDEV_IO_READY, &idev->flags); clear_bit(IDEV_GONE, &idev->flags); - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(IDEV_ALLOCATED, &idev->flags); wake_up(&ihost->eventq); } diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c index c886ad1c39f..73ab75ddaf4 100644 --- a/drivers/target/loopback/tcm_loop.c +++ b/drivers/target/loopback/tcm_loop.c @@ -951,7 +951,7 @@ static int tcm_loop_port_link( struct tcm_loop_hba *tl_hba = tl_tpg->tl_hba; atomic_inc(&tl_tpg->tl_tpg_port_count); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); /* * Add Linux/SCSI struct scsi_device by HCTL */ @@ -986,7 +986,7 @@ static void tcm_loop_port_unlink( scsi_device_put(sd); atomic_dec(&tl_tpg->tl_tpg_port_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); pr_debug("TCM_Loop_ConfigFS: Port Unlink Successful\n"); } diff --git a/drivers/target/target_core_alua.c b/drivers/target/target_core_alua.c index fcbe6125b73..0b79b852f4b 100644 --- a/drivers/target/target_core_alua.c +++ b/drivers/target/target_core_alua.c @@ -393,7 +393,7 @@ target_emulate_set_target_port_groups(struct se_cmd *cmd) continue; atomic_inc(&tg_pt_gp->tg_pt_gp_ref_cnt); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); spin_unlock(&dev->t10_alua.tg_pt_gps_lock); @@ -404,7 +404,7 @@ target_emulate_set_target_port_groups(struct se_cmd *cmd) spin_lock(&dev->t10_alua.tg_pt_gps_lock); atomic_dec(&tg_pt_gp->tg_pt_gp_ref_cnt); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); break; } spin_unlock(&dev->t10_alua.tg_pt_gps_lock); @@ -990,7 +990,7 @@ static void core_alua_do_transition_tg_pt_work(struct work_struct *work) * TARGET PORT GROUPS command */ atomic_inc(&mem->tg_pt_gp_mem_ref_cnt); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); spin_unlock(&tg_pt_gp->tg_pt_gp_lock); spin_lock_bh(&port->sep_alua_lock); @@ -1020,7 +1020,7 @@ static void core_alua_do_transition_tg_pt_work(struct work_struct *work) spin_lock(&tg_pt_gp->tg_pt_gp_lock); atomic_dec(&mem->tg_pt_gp_mem_ref_cnt); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); } spin_unlock(&tg_pt_gp->tg_pt_gp_lock); /* @@ -1054,7 +1054,7 @@ static void core_alua_do_transition_tg_pt_work(struct work_struct *work) core_alua_dump_state(tg_pt_gp->tg_pt_gp_alua_pending_state)); spin_lock(&dev->t10_alua.tg_pt_gps_lock); atomic_dec(&tg_pt_gp->tg_pt_gp_ref_cnt); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); spin_unlock(&dev->t10_alua.tg_pt_gps_lock); if (tg_pt_gp->tg_pt_gp_transition_complete) @@ -1116,7 +1116,7 @@ static int core_alua_do_transition_tg_pt( */ spin_lock(&dev->t10_alua.tg_pt_gps_lock); atomic_inc(&tg_pt_gp->tg_pt_gp_ref_cnt); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); spin_unlock(&dev->t10_alua.tg_pt_gps_lock); if (!explicit && tg_pt_gp->tg_pt_gp_implicit_trans_secs) { @@ -1159,7 +1159,7 @@ int core_alua_do_port_transition( spin_lock(&local_lu_gp_mem->lu_gp_mem_lock); lu_gp = local_lu_gp_mem->lu_gp; atomic_inc(&lu_gp->lu_gp_ref_cnt); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); spin_unlock(&local_lu_gp_mem->lu_gp_mem_lock); /* * For storage objects that are members of the 'default_lu_gp', @@ -1176,7 +1176,7 @@ int core_alua_do_port_transition( rc = core_alua_do_transition_tg_pt(l_tg_pt_gp, new_state, explicit); atomic_dec(&lu_gp->lu_gp_ref_cnt); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); return rc; } /* @@ -1190,7 +1190,7 @@ int core_alua_do_port_transition( dev = lu_gp_mem->lu_gp_mem_dev; atomic_inc(&lu_gp_mem->lu_gp_mem_ref_cnt); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); spin_unlock(&lu_gp->lu_gp_lock); spin_lock(&dev->t10_alua.tg_pt_gps_lock); @@ -1219,7 +1219,7 @@ int core_alua_do_port_transition( tg_pt_gp->tg_pt_gp_alua_nacl = NULL; } atomic_inc(&tg_pt_gp->tg_pt_gp_ref_cnt); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); spin_unlock(&dev->t10_alua.tg_pt_gps_lock); /* * core_alua_do_transition_tg_pt() will always return @@ -1230,7 +1230,7 @@ int core_alua_do_port_transition( spin_lock(&dev->t10_alua.tg_pt_gps_lock); atomic_dec(&tg_pt_gp->tg_pt_gp_ref_cnt); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); if (rc) break; } @@ -1238,7 +1238,7 @@ int core_alua_do_port_transition( spin_lock(&lu_gp->lu_gp_lock); atomic_dec(&lu_gp_mem->lu_gp_mem_ref_cnt); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); } spin_unlock(&lu_gp->lu_gp_lock); @@ -1252,7 +1252,7 @@ int core_alua_do_port_transition( } atomic_dec(&lu_gp->lu_gp_ref_cnt); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); return rc; } diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index 65001e13367..72618776ede 100644 --- a/drivers/target/target_core_device.c +++ b/drivers/target/target_core_device.c @@ -225,7 +225,7 @@ struct se_dev_entry *core_get_se_deve_from_rtpi( continue; atomic_inc(&deve->pr_ref_count); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); spin_unlock_irq(&nacl->device_list_lock); return deve; @@ -1392,7 +1392,7 @@ int core_dev_add_initiator_node_lun_acl( spin_lock(&lun->lun_acl_lock); list_add_tail(&lacl->lacl_list, &lun->lun_acl_list); atomic_inc(&lun->lun_acl_count); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); spin_unlock(&lun->lun_acl_lock); pr_debug("%s_TPG[%hu]_LUN[%u->%u] - Added %s ACL for " @@ -1426,7 +1426,7 @@ int core_dev_del_initiator_node_lun_acl( spin_lock(&lun->lun_acl_lock); list_del(&lacl->lacl_list); atomic_dec(&lun->lun_acl_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); spin_unlock(&lun->lun_acl_lock); core_disable_device_list_for_node(lun, NULL, lacl->mapped_lun, diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c index 9e0232cca92..7e6b857c6b3 100644 --- a/drivers/target/target_core_iblock.c +++ b/drivers/target/target_core_iblock.c @@ -323,7 +323,7 @@ static void iblock_bio_done(struct bio *bio, int err) * Bump the ib_bio_err_cnt and release bio. */ atomic_inc(&ibr->ib_bio_err_cnt); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); } bio_put(bio); diff --git a/drivers/target/target_core_pr.c b/drivers/target/target_core_pr.c index 3013287a2aa..df357862286 100644 --- a/drivers/target/target_core_pr.c +++ b/drivers/target/target_core_pr.c @@ -675,7 +675,7 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration( spin_lock(&dev->se_port_lock); list_for_each_entry_safe(port, port_tmp, &dev->dev_sep_list, sep_list) { atomic_inc(&port->sep_tg_pt_ref_cnt); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); spin_unlock(&dev->se_port_lock); spin_lock_bh(&port->sep_alua_lock); @@ -710,7 +710,7 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration( continue; atomic_inc(&deve_tmp->pr_ref_count); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); spin_unlock_bh(&port->sep_alua_lock); /* * Grab a configfs group dependency that is released @@ -723,9 +723,9 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration( pr_err("core_scsi3_lunacl_depend" "_item() failed\n"); atomic_dec(&port->sep_tg_pt_ref_cnt); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); atomic_dec(&deve_tmp->pr_ref_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); goto out; } /* @@ -740,9 +740,9 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration( sa_res_key, all_tg_pt, aptpl); if (!pr_reg_atp) { atomic_dec(&port->sep_tg_pt_ref_cnt); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); atomic_dec(&deve_tmp->pr_ref_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); core_scsi3_lunacl_undepend_item(deve_tmp); goto out; } @@ -755,7 +755,7 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration( spin_lock(&dev->se_port_lock); atomic_dec(&port->sep_tg_pt_ref_cnt); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); } spin_unlock(&dev->se_port_lock); @@ -1110,7 +1110,7 @@ static struct t10_pr_registration *__core_scsi3_locate_pr_reg( continue; } atomic_inc(&pr_reg->pr_res_holders); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); spin_unlock(&pr_tmpl->registration_lock); return pr_reg; } @@ -1125,7 +1125,7 @@ static struct t10_pr_registration *__core_scsi3_locate_pr_reg( continue; atomic_inc(&pr_reg->pr_res_holders); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); spin_unlock(&pr_tmpl->registration_lock); return pr_reg; } @@ -1155,7 +1155,7 @@ static struct t10_pr_registration *core_scsi3_locate_pr_reg( static void core_scsi3_put_pr_reg(struct t10_pr_registration *pr_reg) { atomic_dec(&pr_reg->pr_res_holders); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); } static int core_scsi3_check_implicit_release( @@ -1349,7 +1349,7 @@ static void core_scsi3_tpg_undepend_item(struct se_portal_group *tpg) &tpg->tpg_group.cg_item); atomic_dec(&tpg->tpg_pr_ref_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); } static int core_scsi3_nodeacl_depend_item(struct se_node_acl *nacl) @@ -1369,7 +1369,7 @@ static void core_scsi3_nodeacl_undepend_item(struct se_node_acl *nacl) if (nacl->dynamic_node_acl) { atomic_dec(&nacl->acl_pr_ref_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); return; } @@ -1377,7 +1377,7 @@ static void core_scsi3_nodeacl_undepend_item(struct se_node_acl *nacl) &nacl->acl_group.cg_item); atomic_dec(&nacl->acl_pr_ref_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); } static int core_scsi3_lunacl_depend_item(struct se_dev_entry *se_deve) @@ -1408,7 +1408,7 @@ static void core_scsi3_lunacl_undepend_item(struct se_dev_entry *se_deve) */ if (!lun_acl) { atomic_dec(&se_deve->pr_ref_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); return; } nacl = lun_acl->se_lun_nacl; @@ -1418,7 +1418,7 @@ static void core_scsi3_lunacl_undepend_item(struct se_dev_entry *se_deve) &lun_acl->se_lun_group.cg_item); atomic_dec(&se_deve->pr_ref_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); } static sense_reason_t @@ -1552,14 +1552,14 @@ core_scsi3_decode_spec_i_port( continue; atomic_inc(&tmp_tpg->tpg_pr_ref_count); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); spin_unlock(&dev->se_port_lock); if (core_scsi3_tpg_depend_item(tmp_tpg)) { pr_err(" core_scsi3_tpg_depend_item()" " for tmp_tpg\n"); atomic_dec(&tmp_tpg->tpg_pr_ref_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; goto out_unmap; } @@ -1573,7 +1573,7 @@ core_scsi3_decode_spec_i_port( tmp_tpg, i_str); if (dest_node_acl) { atomic_inc(&dest_node_acl->acl_pr_ref_count); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); } spin_unlock_irq(&tmp_tpg->acl_node_lock); @@ -1587,7 +1587,7 @@ core_scsi3_decode_spec_i_port( pr_err("configfs_depend_item() failed" " for dest_node_acl->acl_group\n"); atomic_dec(&dest_node_acl->acl_pr_ref_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); core_scsi3_tpg_undepend_item(tmp_tpg); ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; goto out_unmap; @@ -1647,7 +1647,7 @@ core_scsi3_decode_spec_i_port( pr_err("core_scsi3_lunacl_depend_item()" " failed\n"); atomic_dec(&dest_se_deve->pr_ref_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); core_scsi3_nodeacl_undepend_item(dest_node_acl); core_scsi3_tpg_undepend_item(dest_tpg); ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; @@ -3168,14 +3168,14 @@ core_scsi3_emulate_pro_register_and_move(struct se_cmd *cmd, u64 res_key, continue; atomic_inc(&dest_se_tpg->tpg_pr_ref_count); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); spin_unlock(&dev->se_port_lock); if (core_scsi3_tpg_depend_item(dest_se_tpg)) { pr_err("core_scsi3_tpg_depend_item() failed" " for dest_se_tpg\n"); atomic_dec(&dest_se_tpg->tpg_pr_ref_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; goto out_put_pr_reg; } @@ -3273,7 +3273,7 @@ after_iport_check: initiator_str); if (dest_node_acl) { atomic_inc(&dest_node_acl->acl_pr_ref_count); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); } spin_unlock_irq(&dest_se_tpg->acl_node_lock); @@ -3289,7 +3289,7 @@ after_iport_check: pr_err("core_scsi3_nodeacl_depend_item() for" " dest_node_acl\n"); atomic_dec(&dest_node_acl->acl_pr_ref_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); dest_node_acl = NULL; ret = TCM_INVALID_PARAMETER_LIST; goto out; @@ -3314,7 +3314,7 @@ after_iport_check: if (core_scsi3_lunacl_depend_item(dest_se_deve)) { pr_err("core_scsi3_lunacl_depend_item() failed\n"); atomic_dec(&dest_se_deve->pr_ref_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); dest_se_deve = NULL; ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; goto out; @@ -3880,7 +3880,7 @@ core_scsi3_pri_read_full_status(struct se_cmd *cmd) add_desc_len = 0; atomic_inc(&pr_reg->pr_res_holders); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); spin_unlock(&pr_tmpl->registration_lock); /* * Determine expected length of $FABRIC_MOD specific @@ -3894,7 +3894,7 @@ core_scsi3_pri_read_full_status(struct se_cmd *cmd) " out of buffer: %d\n", cmd->data_length); spin_lock(&pr_tmpl->registration_lock); atomic_dec(&pr_reg->pr_res_holders); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); break; } /* @@ -3956,7 +3956,7 @@ core_scsi3_pri_read_full_status(struct se_cmd *cmd) spin_lock(&pr_tmpl->registration_lock); atomic_dec(&pr_reg->pr_res_holders); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); /* * Set the ADDITIONAL DESCRIPTOR LENGTH */ diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index d4b98690a73..4badca1cd62 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -736,7 +736,7 @@ void target_qf_do_work(struct work_struct *work) list_for_each_entry_safe(cmd, cmd_tmp, &qf_cmd_list, se_qf_node) { list_del(&cmd->se_qf_node); atomic_dec(&dev->dev_qf_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); pr_debug("Processing %s cmd: %p QUEUE_FULL in work queue" " context: %s\n", cmd->se_tfo->get_fabric_name(), cmd, @@ -1148,7 +1148,7 @@ transport_check_alloc_task_attr(struct se_cmd *cmd) * Dormant to Active status. */ cmd->se_ordered_id = atomic_inc_return(&dev->dev_ordered_id); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); pr_debug("Allocated se_ordered_id: %u for Task Attr: 0x%02x on %s\n", cmd->se_ordered_id, cmd->sam_task_attr, dev->transport->name); @@ -1705,7 +1705,7 @@ static bool target_handle_task_attr(struct se_cmd *cmd) return false; case MSG_ORDERED_TAG: atomic_inc(&dev->dev_ordered_sync); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); pr_debug("Added ORDERED for CDB: 0x%02x to ordered list, " " se_ordered_id: %u\n", @@ -1723,7 +1723,7 @@ static bool target_handle_task_attr(struct se_cmd *cmd) * For SIMPLE and UNTAGGED Task Attribute commands */ atomic_inc(&dev->simple_cmds); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); break; } @@ -1828,7 +1828,7 @@ static void transport_complete_task_attr(struct se_cmd *cmd) if (cmd->sam_task_attr == MSG_SIMPLE_TAG) { atomic_dec(&dev->simple_cmds); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); dev->dev_cur_ordered_id++; pr_debug("Incremented dev->dev_cur_ordered_id: %u for" " SIMPLE: %u\n", dev->dev_cur_ordered_id, @@ -1840,7 +1840,7 @@ static void transport_complete_task_attr(struct se_cmd *cmd) cmd->se_ordered_id); } else if (cmd->sam_task_attr == MSG_ORDERED_TAG) { atomic_dec(&dev->dev_ordered_sync); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); dev->dev_cur_ordered_id++; pr_debug("Incremented dev_cur_ordered_id: %u for ORDERED:" @@ -1899,7 +1899,7 @@ static void transport_handle_queue_full( spin_lock_irq(&dev->qf_cmd_lock); list_add_tail(&cmd->se_qf_node, &cmd->se_dev->qf_cmd_list); atomic_inc(&dev->dev_qf_count); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); spin_unlock_irq(&cmd->se_dev->qf_cmd_lock); schedule_work(&cmd->se_dev->qf_work_queue); @@ -2875,7 +2875,7 @@ void transport_send_task_abort(struct se_cmd *cmd) if (cmd->se_tfo->write_pending_status(cmd) != 0) { cmd->transport_state |= CMD_T_ABORTED; cmd->se_cmd_flags |= SCF_SEND_DELAYED_TAS; - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); return; } } diff --git a/drivers/target/target_core_ua.c b/drivers/target/target_core_ua.c index 505519b10cb..101858e245b 100644 --- a/drivers/target/target_core_ua.c +++ b/drivers/target/target_core_ua.c @@ -162,7 +162,7 @@ int core_scsi3_ua_allocate( spin_unlock_irq(&nacl->device_list_lock); atomic_inc(&deve->ua_count); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); return 0; } list_add_tail(&ua->ua_nacl_list, &deve->ua_list); @@ -175,7 +175,7 @@ int core_scsi3_ua_allocate( asc, ascq); atomic_inc(&deve->ua_count); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); return 0; } @@ -190,7 +190,7 @@ void core_scsi3_ua_release_all( kmem_cache_free(se_ua_cache, ua); atomic_dec(&deve->ua_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); } spin_unlock(&deve->ua_lock); } @@ -251,7 +251,7 @@ void core_scsi3_ua_for_check_condition( kmem_cache_free(se_ua_cache, ua); atomic_dec(&deve->ua_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); } spin_unlock(&deve->ua_lock); spin_unlock_irq(&nacl->device_list_lock); @@ -310,7 +310,7 @@ int core_scsi3_ua_clear_for_request_sense( kmem_cache_free(se_ua_cache, ua); atomic_dec(&deve->ua_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); } spin_unlock(&deve->ua_lock); spin_unlock_irq(&nacl->device_list_lock); diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index 41fe8a047d3..746ae80b972 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -2041,7 +2041,7 @@ static int canon_copy_from_read_buf(struct tty_struct *tty, if (found) clear_bit(eol, ldata->read_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); ldata->read_tail += c; if (found) { diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c index aa97fd845b4..4b5b3c2fe32 100644 --- a/drivers/tty/serial/mxs-auart.c +++ b/drivers/tty/serial/mxs-auart.c @@ -200,7 +200,7 @@ static void dma_tx_callback(void *param) /* clear the bit used to serialize the DMA tx. */ clear_bit(MXS_AUART_DMA_TX_SYNC, &s->flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); /* wake up the possible processes. */ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) @@ -275,7 +275,7 @@ static void mxs_auart_tx_chars(struct mxs_auart_port *s) mxs_auart_dma_tx(s, i); } else { clear_bit(MXS_AUART_DMA_TX_SYNC, &s->flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); } return; } diff --git a/drivers/usb/gadget/tcm_usb_gadget.c b/drivers/usb/gadget/tcm_usb_gadget.c index f058c0368d6..819875c7e39 100644 --- a/drivers/usb/gadget/tcm_usb_gadget.c +++ b/drivers/usb/gadget/tcm_usb_gadget.c @@ -1851,7 +1851,7 @@ static int usbg_port_link(struct se_portal_group *se_tpg, struct se_lun *lun) struct usbg_tpg *tpg = container_of(se_tpg, struct usbg_tpg, se_tpg); atomic_inc(&tpg->tpg_port_count); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); return 0; } @@ -1861,7 +1861,7 @@ static void usbg_port_unlink(struct se_portal_group *se_tpg, struct usbg_tpg *tpg = container_of(se_tpg, struct usbg_tpg, se_tpg); atomic_dec(&tpg->tpg_port_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); } static int usbg_check_stop_free(struct se_cmd *se_cmd) diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c index 640fe017323..f1ec1680e82 100644 --- a/drivers/usb/serial/usb_wwan.c +++ b/drivers/usb/serial/usb_wwan.c @@ -325,7 +325,7 @@ static void usb_wwan_outdat_callback(struct urb *urb) for (i = 0; i < N_OUT_URB; ++i) { if (portdata->out_urbs[i] == urb) { - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(i, &portdata->out_busy); break; } diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c index cf50ce93975..aeb51310844 100644 --- a/drivers/vhost/scsi.c +++ b/drivers/vhost/scsi.c @@ -1255,7 +1255,7 @@ vhost_scsi_set_endpoint(struct vhost_scsi *vs, tpg->tv_tpg_vhost_count++; tpg->vhost_scsi = vs; vs_tpg[tpg->tport_tpgt] = tpg; - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); match = true; } mutex_unlock(&tpg->tv_tpg_mutex); diff --git a/drivers/w1/w1_family.c b/drivers/w1/w1_family.c index 3bff6b37b47..3651ec801f4 100644 --- a/drivers/w1/w1_family.c +++ b/drivers/w1/w1_family.c @@ -139,9 +139,9 @@ void w1_family_get(struct w1_family *f) void __w1_family_get(struct w1_family *f) { - smp_mb__before_atomic_inc(); + smp_mb__before_atomic(); atomic_inc(&f->refcnt); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); } EXPORT_SYMBOL(w1_unregister_family); diff --git a/drivers/xen/xen-pciback/pciback_ops.c b/drivers/xen/xen-pciback/pciback_ops.c index 607e41460c0..c4a0666de6f 100644 --- a/drivers/xen/xen-pciback/pciback_ops.c +++ b/drivers/xen/xen-pciback/pciback_ops.c @@ -348,9 +348,9 @@ void xen_pcibk_do_op(struct work_struct *data) notify_remote_via_irq(pdev->evtchn_irq); /* Mark that we're done. */ - smp_mb__before_clear_bit(); /* /after/ clearing PCIF_active */ + smp_mb__before_atomic(); /* /after/ clearing PCIF_active */ clear_bit(_PDEVF_op_active, &pdev->flags); - smp_mb__after_clear_bit(); /* /before/ final check for work */ + smp_mb__after_atomic(); /* /before/ final check for work */ /* Check to see if the driver domain tried to start another request in * between clearing _XEN_PCIF_active and clearing _PDEVF_op_active. diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h index c9a24444ec9..2256e9cceec 100644 --- a/fs/btrfs/btrfs_inode.h +++ b/fs/btrfs/btrfs_inode.h @@ -279,7 +279,7 @@ static inline void btrfs_inode_block_unlocked_dio(struct inode *inode) static inline void btrfs_inode_resume_unlocked_dio(struct inode *inode) { - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(BTRFS_INODE_READDIO_NEED_LOCK, &BTRFS_I(inode)->runtime_flags); } diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 3955e475cee..f29a54e454d 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -3458,7 +3458,7 @@ static int lock_extent_buffer_for_io(struct extent_buffer *eb, static void end_extent_buffer_writeback(struct extent_buffer *eb) { clear_bit(EXTENT_BUFFER_WRITEBACK, &eb->bflags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&eb->bflags, EXTENT_BUFFER_WRITEBACK); } diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 5f805bc944f..5a3b8371772 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -7126,7 +7126,7 @@ static void btrfs_end_dio_bio(struct bio *bio, int err) * before atomic variable goto zero, we must make sure * dip->errors is perceived to be set. */ - smp_mb__before_atomic_dec(); + smp_mb__before_atomic(); } /* if there are more bios still pending for this dio, just exit */ @@ -7306,7 +7306,7 @@ out_err: * before atomic variable goto zero, we must * make sure dip->errors is perceived to be set. */ - smp_mb__before_atomic_dec(); + smp_mb__before_atomic(); if (atomic_dec_and_test(&dip->pending_bios)) bio_io_error(dip->orig_bio); @@ -7449,7 +7449,7 @@ static ssize_t btrfs_direct_IO(int rw, struct kiocb *iocb, return 0; atomic_inc(&inode->i_dio_count); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); /* * The generic stuff only does filemap_write_and_wait_range, which diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index e79ff6b90cb..f45040a4bb7 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -642,7 +642,7 @@ static int create_snapshot(struct btrfs_root *root, struct inode *dir, return -EINVAL; atomic_inc(&root->will_be_snapshoted); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); btrfs_wait_nocow_write(root); ret = btrfs_start_delalloc_inodes(root, 0); diff --git a/fs/buffer.c b/fs/buffer.c index 9ddb9fc7d92..6a8110c03a4 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -77,7 +77,7 @@ EXPORT_SYMBOL(__lock_buffer); void unlock_buffer(struct buffer_head *bh) { clear_bit_unlock(BH_Lock, &bh->b_state); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&bh->b_state, BH_Lock); } EXPORT_SYMBOL(unlock_buffer); diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c index f3b84cd9de5..08b3c116915 100644 --- a/fs/ext4/resize.c +++ b/fs/ext4/resize.c @@ -42,7 +42,7 @@ int ext4_resize_begin(struct super_block *sb) void ext4_resize_end(struct super_block *sb) { clear_bit_unlock(EXT4_RESIZING, &EXT4_SB(sb)->s_resize_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); } static ext4_group_t ext4_meta_bg_first_group(struct super_block *sb, diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index aec7f73832f..c355f7320e4 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -277,7 +277,7 @@ static inline int may_grant(const struct gfs2_glock *gl, const struct gfs2_holde static void gfs2_holder_wake(struct gfs2_holder *gh) { clear_bit(HIF_WAIT, &gh->gh_iflags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&gh->gh_iflags, HIF_WAIT); } @@ -411,7 +411,7 @@ static void gfs2_demote_wake(struct gfs2_glock *gl) { gl->gl_demote_state = LM_ST_EXCLUSIVE; clear_bit(GLF_DEMOTE, &gl->gl_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&gl->gl_flags, GLF_DEMOTE); } @@ -620,7 +620,7 @@ out: out_sched: clear_bit(GLF_LOCK, &gl->gl_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); gl->gl_lockref.count++; if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0) gl->gl_lockref.count--; @@ -628,7 +628,7 @@ out_sched: out_unlock: clear_bit(GLF_LOCK, &gl->gl_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); return; } diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c index 54b66809e81..74d9a3dbf16 100644 --- a/fs/gfs2/glops.c +++ b/fs/gfs2/glops.c @@ -221,7 +221,7 @@ static void inode_go_sync(struct gfs2_glock *gl) * Writeback of the data mapping may cause the dirty flag to be set * so we have to clear it again here. */ - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(GLF_DIRTY, &gl->gl_flags); } diff --git a/fs/gfs2/lock_dlm.c b/fs/gfs2/lock_dlm.c index c1eb555dc58..91f274de124 100644 --- a/fs/gfs2/lock_dlm.c +++ b/fs/gfs2/lock_dlm.c @@ -1134,7 +1134,7 @@ static void gdlm_recover_done(void *arg, struct dlm_slot *slots, int num_slots, queue_delayed_work(gfs2_control_wq, &sdp->sd_control_work, 0); clear_bit(DFL_DLM_RECOVERY, &ls->ls_recover_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&ls->ls_recover_flags, DFL_DLM_RECOVERY); spin_unlock(&ls->ls_recover_spin); } @@ -1271,7 +1271,7 @@ static int gdlm_mount(struct gfs2_sbd *sdp, const char *table) ls->ls_first = !!test_bit(DFL_FIRST_MOUNT, &ls->ls_recover_flags); clear_bit(SDF_NOJOURNALID, &sdp->sd_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&sdp->sd_flags, SDF_NOJOURNALID); return 0; diff --git a/fs/gfs2/recovery.c b/fs/gfs2/recovery.c index 7ad4094d68c..fe7a56fb608 100644 --- a/fs/gfs2/recovery.c +++ b/fs/gfs2/recovery.c @@ -587,7 +587,7 @@ fail: gfs2_recovery_done(sdp, jd->jd_jid, LM_RD_GAVEUP); done: clear_bit(JDF_RECOVERY, &jd->jd_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&jd->jd_flags, JDF_RECOVERY); } diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c index de25d5577e5..529d9a9eb89 100644 --- a/fs/gfs2/sys.c +++ b/fs/gfs2/sys.c @@ -333,7 +333,7 @@ static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len) set_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags); else if (val == 0) { clear_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); gfs2_glock_thaw(sdp); } else { ret = -EINVAL; @@ -482,7 +482,7 @@ static ssize_t jid_store(struct gfs2_sbd *sdp, const char *buf, size_t len) rv = jid = -EINVAL; sdp->sd_lockstruct.ls_jid = jid; clear_bit(SDF_NOJOURNALID, &sdp->sd_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&sdp->sd_flags, SDF_NOJOURNALID); out: spin_unlock(&sdp->sd_jindex_spin); diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c index 5f26139a165..6fac7434985 100644 --- a/fs/jbd2/commit.c +++ b/fs/jbd2/commit.c @@ -43,7 +43,7 @@ static void journal_end_buffer_io_sync(struct buffer_head *bh, int uptodate) clear_buffer_uptodate(bh); if (orig_bh) { clear_bit_unlock(BH_Shadow, &orig_bh->b_state); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&orig_bh->b_state, BH_Shadow); } unlock_buffer(bh); @@ -239,7 +239,7 @@ static int journal_submit_data_buffers(journal_t *journal, spin_lock(&journal->j_list_lock); J_ASSERT(jinode->i_transaction == commit_transaction); clear_bit(__JI_COMMIT_RUNNING, &jinode->i_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&jinode->i_flags, __JI_COMMIT_RUNNING); } spin_unlock(&journal->j_list_lock); @@ -277,7 +277,7 @@ static int journal_finish_inode_data_buffers(journal_t *journal, } spin_lock(&journal->j_list_lock); clear_bit(__JI_COMMIT_RUNNING, &jinode->i_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&jinode->i_flags, __JI_COMMIT_RUNNING); } diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index d9f3d067cd1..4a3d4ef7612 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -2032,9 +2032,9 @@ static void nfs_access_free_entry(struct nfs_access_entry *entry) { put_rpccred(entry->cred); kfree(entry); - smp_mb__before_atomic_dec(); + smp_mb__before_atomic(); atomic_long_dec(&nfs_access_nr_entries); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); } static void nfs_access_free_list(struct list_head *head) @@ -2082,9 +2082,9 @@ nfs_access_cache_scan(struct shrinker *shrink, struct shrink_control *sc) else { remove_lru_entry: list_del_init(&nfsi->access_cache_inode_lru); - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(NFS_INO_ACL_LRU_SET, &nfsi->flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); } spin_unlock(&inode->i_lock); } @@ -2232,9 +2232,9 @@ void nfs_access_add_cache(struct inode *inode, struct nfs_access_entry *set) nfs_access_add_rbtree(inode, cache); /* Update accounting */ - smp_mb__before_atomic_inc(); + smp_mb__before_atomic(); atomic_long_inc(&nfs_access_nr_entries); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); /* Add inode to global LRU list */ if (!test_bit(NFS_INO_ACL_LRU_SET, &NFS_I(inode)->flags)) { diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 0c438973f3c..e6f7398d2b3 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -1085,7 +1085,7 @@ int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping) trace_nfs_invalidate_mapping_exit(inode, ret); clear_bit_unlock(NFS_INO_INVALIDATING, bitlock); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(bitlock, NFS_INO_INVALIDATING); out: return ret; diff --git a/fs/nfs/nfs4filelayoutdev.c b/fs/nfs/nfs4filelayoutdev.c index efac602edb3..b9c61efe966 100644 --- a/fs/nfs/nfs4filelayoutdev.c +++ b/fs/nfs/nfs4filelayoutdev.c @@ -789,9 +789,9 @@ static void nfs4_wait_ds_connect(struct nfs4_pnfs_ds *ds) static void nfs4_clear_ds_conn_bit(struct nfs4_pnfs_ds *ds) { - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(NFS4DS_CONNECTING, &ds->ds_state); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&ds->ds_state, NFS4DS_CONNECTING); } diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 2349518eef2..c0583b9bef7 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -1140,9 +1140,9 @@ static int nfs4_run_state_manager(void *); static void nfs4_clear_state_manager_bit(struct nfs_client *clp) { - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING); rpc_wake_up(&clp->cl_rpcwaitq); } diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index 2ffebf2081c..03ed984ab4d 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -95,7 +95,7 @@ nfs_iocounter_dec(struct nfs_io_counter *c) { if (atomic_dec_and_test(&c->io_count)) { clear_bit(NFS_IO_INPROGRESS, &c->flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&c->flags, NFS_IO_INPROGRESS); } } @@ -193,9 +193,9 @@ void nfs_unlock_request(struct nfs_page *req) printk(KERN_ERR "NFS: Invalid unlock attempted\n"); BUG(); } - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(PG_BUSY, &req->wb_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&req->wb_flags, PG_BUSY); } diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index cb53d450ae3..fd9536e494b 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1810,7 +1810,7 @@ static void pnfs_clear_layoutcommitting(struct inode *inode) unsigned long *bitlock = &NFS_I(inode)->flags; clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); } diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h index 02379390977..c3058a07659 100644 --- a/fs/nfs/pnfs.h +++ b/fs/nfs/pnfs.h @@ -275,7 +275,7 @@ pnfs_get_lseg(struct pnfs_layout_segment *lseg) { if (lseg) { atomic_inc(&lseg->pls_refcount); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); } return lseg; } diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 9a3b6a4cd6b..ffb9459f180 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -405,7 +405,7 @@ int nfs_writepages(struct address_space *mapping, struct writeback_control *wbc) nfs_pageio_complete(&pgio); clear_bit_unlock(NFS_INO_FLUSHING, bitlock); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(bitlock, NFS_INO_FLUSHING); if (err < 0) @@ -1458,7 +1458,7 @@ static int nfs_commit_set_lock(struct nfs_inode *nfsi, int may_wait) static void nfs_commit_clear_lock(struct nfs_inode *nfsi) { clear_bit(NFS_INO_COMMIT, &nfsi->flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&nfsi->flags, NFS_INO_COMMIT); } diff --git a/fs/ubifs/lpt_commit.c b/fs/ubifs/lpt_commit.c index 4b826abb152..45d4e96a6ba 100644 --- a/fs/ubifs/lpt_commit.c +++ b/fs/ubifs/lpt_commit.c @@ -460,9 +460,9 @@ static int write_cnodes(struct ubifs_info *c) * important. */ clear_bit(DIRTY_CNODE, &cnode->flags); - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(COW_CNODE, &cnode->flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); offs += len; dbg_chk_lpt_sz(c, 1, len); cnode = cnode->cnext; diff --git a/fs/ubifs/tnc_commit.c b/fs/ubifs/tnc_commit.c index 52a6559275c..3600994f841 100644 --- a/fs/ubifs/tnc_commit.c +++ b/fs/ubifs/tnc_commit.c @@ -895,9 +895,9 @@ static int write_index(struct ubifs_info *c) * the reason for the second barrier. */ clear_bit(DIRTY_ZNODE, &znode->flags); - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(COW_ZNODE, &znode->flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); /* * We have marked the znode as clean but have not updated the diff --git a/include/asm-generic/bitops/atomic.h b/include/asm-generic/bitops/atomic.h index 9ae6c34dc19..49673510b48 100644 --- a/include/asm-generic/bitops/atomic.h +++ b/include/asm-generic/bitops/atomic.h @@ -80,7 +80,7 @@ static inline void set_bit(int nr, volatile unsigned long *addr) * * clear_bit() is atomic and may not be reordered. However, it does * not contain a memory barrier, so if it is used for locking purposes, - * you should call smp_mb__before_clear_bit() and/or smp_mb__after_clear_bit() + * you should call smp_mb__before_atomic() and/or smp_mb__after_atomic() * in order to ensure changes are visible on other processors. */ static inline void clear_bit(int nr, volatile unsigned long *addr) diff --git a/include/asm-generic/bitops/lock.h b/include/asm-generic/bitops/lock.h index 308a9e22c80..c30266e9480 100644 --- a/include/asm-generic/bitops/lock.h +++ b/include/asm-generic/bitops/lock.h @@ -20,7 +20,7 @@ */ #define clear_bit_unlock(nr, addr) \ do { \ - smp_mb__before_clear_bit(); \ + smp_mb__before_atomic(); \ clear_bit(nr, addr); \ } while (0) diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h index c40302f909c..7cbf837a279 100644 --- a/include/linux/buffer_head.h +++ b/include/linux/buffer_head.h @@ -278,7 +278,7 @@ static inline void get_bh(struct buffer_head *bh) static inline void put_bh(struct buffer_head *bh) { - smp_mb__before_atomic_dec(); + smp_mb__before_atomic(); atomic_dec(&bh->b_count); } diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 9f3c275e053..ec274e0f4ed 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -649,7 +649,7 @@ static inline void hd_ref_init(struct hd_struct *part) static inline void hd_struct_get(struct hd_struct *part) { atomic_inc(&part->ref); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); } static inline int hd_struct_try_get(struct hd_struct *part) diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index c7bfac1c4a7..15711104328 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -453,7 +453,7 @@ static inline int tasklet_trylock(struct tasklet_struct *t) static inline void tasklet_unlock(struct tasklet_struct *t) { - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(TASKLET_STATE_RUN, &(t)->state); } @@ -501,7 +501,7 @@ static inline void tasklet_hi_schedule_first(struct tasklet_struct *t) static inline void tasklet_disable_nosync(struct tasklet_struct *t) { atomic_inc(&t->count); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); } static inline void tasklet_disable(struct tasklet_struct *t) @@ -513,13 +513,13 @@ static inline void tasklet_disable(struct tasklet_struct *t) static inline void tasklet_enable(struct tasklet_struct *t) { - smp_mb__before_atomic_dec(); + smp_mb__before_atomic(); atomic_dec(&t->count); } static inline void tasklet_hi_enable(struct tasklet_struct *t) { - smp_mb__before_atomic_dec(); + smp_mb__before_atomic(); atomic_dec(&t->count); } diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 7ed3a3aa660..616415a4fee 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -493,7 +493,7 @@ static inline void napi_disable(struct napi_struct *n) static inline void napi_enable(struct napi_struct *n) { BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state)); - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(NAPI_STATE_SCHED, &n->state); } diff --git a/include/linux/sched.h b/include/linux/sched.h index 25f54c79f75..010cde3b44c 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2782,10 +2782,8 @@ static inline bool __must_check current_set_polling_and_test(void) /* * Polling state must be visible before we test NEED_RESCHED, * paired by resched_task() - * - * XXX: assumes set/clear bit are identical barrier wise. */ - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); return unlikely(tif_need_resched()); } @@ -2803,7 +2801,7 @@ static inline bool __must_check current_clr_polling_and_test(void) * Polling state must be visible before we test NEED_RESCHED, * paired by resched_task() */ - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); return unlikely(tif_need_resched()); } diff --git a/include/linux/sunrpc/sched.h b/include/linux/sunrpc/sched.h index 3a847de83fa..ad7dbe2cfec 100644 --- a/include/linux/sunrpc/sched.h +++ b/include/linux/sunrpc/sched.h @@ -142,18 +142,18 @@ struct rpc_task_setup { test_and_set_bit(RPC_TASK_RUNNING, &(t)->tk_runstate) #define rpc_clear_running(t) \ do { \ - smp_mb__before_clear_bit(); \ + smp_mb__before_atomic(); \ clear_bit(RPC_TASK_RUNNING, &(t)->tk_runstate); \ - smp_mb__after_clear_bit(); \ + smp_mb__after_atomic(); \ } while (0) #define RPC_IS_QUEUED(t) test_bit(RPC_TASK_QUEUED, &(t)->tk_runstate) #define rpc_set_queued(t) set_bit(RPC_TASK_QUEUED, &(t)->tk_runstate) #define rpc_clear_queued(t) \ do { \ - smp_mb__before_clear_bit(); \ + smp_mb__before_atomic(); \ clear_bit(RPC_TASK_QUEUED, &(t)->tk_runstate); \ - smp_mb__after_clear_bit(); \ + smp_mb__after_atomic(); \ } while (0) #define RPC_IS_ACTIVATED(t) test_bit(RPC_TASK_ACTIVE, &(t)->tk_runstate) diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h index 3e5efb2b236..3876f0f1dfd 100644 --- a/include/linux/sunrpc/xprt.h +++ b/include/linux/sunrpc/xprt.h @@ -379,9 +379,9 @@ static inline int xprt_test_and_clear_connected(struct rpc_xprt *xprt) static inline void xprt_clear_connecting(struct rpc_xprt *xprt) { - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(XPRT_CONNECTING, &xprt->state); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); } static inline int xprt_connecting(struct rpc_xprt *xprt) @@ -411,9 +411,9 @@ static inline void xprt_clear_bound(struct rpc_xprt *xprt) static inline void xprt_clear_binding(struct rpc_xprt *xprt) { - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(XPRT_BINDING, &xprt->state); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); } static inline int xprt_test_and_set_binding(struct rpc_xprt *xprt) diff --git a/include/linux/tracehook.h b/include/linux/tracehook.h index 1e98b553042..6f8ab7da27c 100644 --- a/include/linux/tracehook.h +++ b/include/linux/tracehook.h @@ -191,7 +191,7 @@ static inline void tracehook_notify_resume(struct pt_regs *regs) * pairs with task_work_add()->set_notify_resume() after * hlist_add_head(task->task_works); */ - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); if (unlikely(current->task_works)) task_work_run(); } diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h index 5679d927562..624a8a54806 100644 --- a/include/net/ip_vs.h +++ b/include/net/ip_vs.h @@ -1204,7 +1204,7 @@ static inline bool __ip_vs_conn_get(struct ip_vs_conn *cp) /* put back the conn without restarting its timer */ static inline void __ip_vs_conn_put(struct ip_vs_conn *cp) { - smp_mb__before_atomic_dec(); + smp_mb__before_atomic(); atomic_dec(&cp->refcnt); } void ip_vs_conn_put(struct ip_vs_conn *cp); @@ -1408,7 +1408,7 @@ static inline void ip_vs_dest_hold(struct ip_vs_dest *dest) static inline void ip_vs_dest_put(struct ip_vs_dest *dest) { - smp_mb__before_atomic_dec(); + smp_mb__before_atomic(); atomic_dec(&dest->refcnt); } diff --git a/kernel/debug/debug_core.c b/kernel/debug/debug_core.c index 2956c8da160..1adf62b39b9 100644 --- a/kernel/debug/debug_core.c +++ b/kernel/debug/debug_core.c @@ -534,7 +534,7 @@ return_normal: kgdb_info[cpu].exception_state &= ~(DCPU_WANT_MASTER | DCPU_IS_SLAVE); kgdb_info[cpu].enter_kgdb--; - smp_mb__before_atomic_dec(); + smp_mb__before_atomic(); atomic_dec(&slaves_in_kgdb); dbg_touch_watchdogs(); local_irq_restore(flags); @@ -662,7 +662,7 @@ kgdb_restore: kgdb_info[cpu].exception_state &= ~(DCPU_WANT_MASTER | DCPU_IS_SLAVE); kgdb_info[cpu].enter_kgdb--; - smp_mb__before_atomic_dec(); + smp_mb__before_atomic(); atomic_dec(&masters_in_kgdb); /* Free kgdb_active */ atomic_set(&kgdb_active, -1); diff --git a/kernel/futex.c b/kernel/futex.c index 5f589279e46..b991ec05b8f 100644 --- a/kernel/futex.c +++ b/kernel/futex.c @@ -267,7 +267,7 @@ static inline void futex_get_mm(union futex_key *key) * get_futex_key() implies a full barrier. This is relied upon * as full barrier (B), see the ordering comment above. */ - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); } /* @@ -280,7 +280,7 @@ static inline void hb_waiters_inc(struct futex_hash_bucket *hb) /* * Full barrier (A), see the ordering comment above. */ - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); #endif } diff --git a/kernel/kmod.c b/kernel/kmod.c index 6b375af4958..0ac67a5861c 100644 --- a/kernel/kmod.c +++ b/kernel/kmod.c @@ -498,7 +498,7 @@ int __usermodehelper_disable(enum umh_disable_depth depth) static void helper_lock(void) { atomic_inc(&running_helpers); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); } static void helper_unlock(void) diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index 0c47e300210..88b4a1dcb58 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -387,9 +387,9 @@ static void rcu_eqs_enter_common(struct rcu_dynticks *rdtp, long long oldval, } rcu_prepare_for_idle(smp_processor_id()); /* CPUs seeing atomic_inc() must see prior RCU read-side crit sects */ - smp_mb__before_atomic_inc(); /* See above. */ + smp_mb__before_atomic(); /* See above. */ atomic_inc(&rdtp->dynticks); - smp_mb__after_atomic_inc(); /* Force ordering with next sojourn. */ + smp_mb__after_atomic(); /* Force ordering with next sojourn. */ WARN_ON_ONCE(atomic_read(&rdtp->dynticks) & 0x1); /* @@ -507,10 +507,10 @@ void rcu_irq_exit(void) static void rcu_eqs_exit_common(struct rcu_dynticks *rdtp, long long oldval, int user) { - smp_mb__before_atomic_inc(); /* Force ordering w/previous sojourn. */ + smp_mb__before_atomic(); /* Force ordering w/previous sojourn. */ atomic_inc(&rdtp->dynticks); /* CPUs seeing atomic_inc() must see later RCU read-side crit sects */ - smp_mb__after_atomic_inc(); /* See above. */ + smp_mb__after_atomic(); /* See above. */ WARN_ON_ONCE(!(atomic_read(&rdtp->dynticks) & 0x1)); rcu_cleanup_after_idle(smp_processor_id()); trace_rcu_dyntick(TPS("End"), oldval, rdtp->dynticks_nesting); @@ -635,10 +635,10 @@ void rcu_nmi_enter(void) (atomic_read(&rdtp->dynticks) & 0x1)) return; rdtp->dynticks_nmi_nesting++; - smp_mb__before_atomic_inc(); /* Force delay from prior write. */ + smp_mb__before_atomic(); /* Force delay from prior write. */ atomic_inc(&rdtp->dynticks); /* CPUs seeing atomic_inc() must see later RCU read-side crit sects */ - smp_mb__after_atomic_inc(); /* See above. */ + smp_mb__after_atomic(); /* See above. */ WARN_ON_ONCE(!(atomic_read(&rdtp->dynticks) & 0x1)); } @@ -657,9 +657,9 @@ void rcu_nmi_exit(void) --rdtp->dynticks_nmi_nesting != 0) return; /* CPUs seeing atomic_inc() must see prior RCU read-side crit sects */ - smp_mb__before_atomic_inc(); /* See above. */ + smp_mb__before_atomic(); /* See above. */ atomic_inc(&rdtp->dynticks); - smp_mb__after_atomic_inc(); /* Force delay to next write. */ + smp_mb__after_atomic(); /* Force delay to next write. */ WARN_ON_ONCE(atomic_read(&rdtp->dynticks) & 0x1); } @@ -2790,7 +2790,7 @@ void synchronize_sched_expedited(void) s = atomic_long_read(&rsp->expedited_done); if (ULONG_CMP_GE((ulong)s, (ulong)firstsnap)) { /* ensure test happens before caller kfree */ - smp_mb__before_atomic_inc(); /* ^^^ */ + smp_mb__before_atomic(); /* ^^^ */ atomic_long_inc(&rsp->expedited_workdone1); return; } @@ -2808,7 +2808,7 @@ void synchronize_sched_expedited(void) s = atomic_long_read(&rsp->expedited_done); if (ULONG_CMP_GE((ulong)s, (ulong)firstsnap)) { /* ensure test happens before caller kfree */ - smp_mb__before_atomic_inc(); /* ^^^ */ + smp_mb__before_atomic(); /* ^^^ */ atomic_long_inc(&rsp->expedited_workdone2); return; } @@ -2837,7 +2837,7 @@ void synchronize_sched_expedited(void) s = atomic_long_read(&rsp->expedited_done); if (ULONG_CMP_GE((ulong)s, (ulong)snap)) { /* ensure test happens before caller kfree */ - smp_mb__before_atomic_inc(); /* ^^^ */ + smp_mb__before_atomic(); /* ^^^ */ atomic_long_inc(&rsp->expedited_done_lost); break; } diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h index 962d1d58992..56db2f853e4 100644 --- a/kernel/rcu/tree_plugin.h +++ b/kernel/rcu/tree_plugin.h @@ -2523,9 +2523,9 @@ static void rcu_sysidle_enter(struct rcu_dynticks *rdtp, int irq) /* Record start of fully idle period. */ j = jiffies; ACCESS_ONCE(rdtp->dynticks_idle_jiffies) = j; - smp_mb__before_atomic_inc(); + smp_mb__before_atomic(); atomic_inc(&rdtp->dynticks_idle); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); WARN_ON_ONCE(atomic_read(&rdtp->dynticks_idle) & 0x1); } @@ -2590,9 +2590,9 @@ static void rcu_sysidle_exit(struct rcu_dynticks *rdtp, int irq) } /* Record end of idle period. */ - smp_mb__before_atomic_inc(); + smp_mb__before_atomic(); atomic_inc(&rdtp->dynticks_idle); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); WARN_ON_ONCE(!(atomic_read(&rdtp->dynticks_idle) & 0x1)); /* diff --git a/kernel/sched/cpupri.c b/kernel/sched/cpupri.c index 8b836b376d9..746bc934496 100644 --- a/kernel/sched/cpupri.c +++ b/kernel/sched/cpupri.c @@ -165,7 +165,7 @@ void cpupri_set(struct cpupri *cp, int cpu, int newpri) * do a write memory barrier, and then update the count, to * make sure the vector is visible when count is set. */ - smp_mb__before_atomic_inc(); + smp_mb__before_atomic(); atomic_inc(&(vec)->count); do_mb = 1; } @@ -185,14 +185,14 @@ void cpupri_set(struct cpupri *cp, int cpu, int newpri) * the new priority vec. */ if (do_mb) - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); /* * When removing from the vector, we decrement the counter first * do a memory barrier and then clear the mask. */ atomic_dec(&(vec)->count); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); cpumask_clear_cpu(cpu, vec->mask); } diff --git a/kernel/sched/wait.c b/kernel/sched/wait.c index 7d50f794e24..0ffa20ae657 100644 --- a/kernel/sched/wait.c +++ b/kernel/sched/wait.c @@ -394,7 +394,7 @@ EXPORT_SYMBOL(__wake_up_bit); * * In order for this to function properly, as it uses waitqueue_active() * internally, some kind of memory barrier must be done prior to calling - * this. Typically, this will be smp_mb__after_clear_bit(), but in some + * this. Typically, this will be smp_mb__after_atomic(), but in some * cases where bitflags are manipulated non-atomically under a lock, one * may need to use a less regular barrier, such fs/inode.c's smp_mb(), * because spin_unlock() does not guarantee a memory barrier. diff --git a/mm/backing-dev.c b/mm/backing-dev.c index 09d9591b770..1706cbbdf5f 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -557,7 +557,7 @@ void clear_bdi_congested(struct backing_dev_info *bdi, int sync) bit = sync ? BDI_sync_congested : BDI_async_congested; if (test_and_clear_bit(bit, &bdi->state)) atomic_dec(&nr_bdi_congested[sync]); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); if (waitqueue_active(wqh)) wake_up(wqh); } diff --git a/mm/filemap.c b/mm/filemap.c index a82fbe4c9e8..c73535c914c 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -740,7 +740,7 @@ void unlock_page(struct page *page) { VM_BUG_ON_PAGE(!PageLocked(page), page); clear_bit_unlock(PG_locked, &page->flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_page(page, PG_locked); } EXPORT_SYMBOL(unlock_page); @@ -757,7 +757,7 @@ void end_page_writeback(struct page *page) if (!test_clear_page_writeback(page)) BUG(); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_page(page, PG_writeback); } EXPORT_SYMBOL(end_page_writeback); diff --git a/net/atm/pppoatm.c b/net/atm/pppoatm.c index 8c93267ce96..c4e09846d1d 100644 --- a/net/atm/pppoatm.c +++ b/net/atm/pppoatm.c @@ -252,7 +252,7 @@ static int pppoatm_may_send(struct pppoatm_vcc *pvcc, int size) * we need to ensure there's a memory barrier after it. The bit * *must* be set before we do the atomic_inc() on pvcc->inflight. * There's no smp_mb__after_set_bit(), so it's this or abuse - * smp_mb__after_clear_bit(). + * smp_mb__after_atomic(). */ test_and_set_bit(BLOCKED, &pvcc->blocked); diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index 49774912cb0..74014420b3c 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -45,7 +45,7 @@ static void hci_cc_inquiry_cancel(struct hci_dev *hdev, struct sk_buff *skb) return; clear_bit(HCI_INQUIRY, &hdev->flags); - smp_mb__after_clear_bit(); /* wake_up_bit advises about this barrier */ + smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ wake_up_bit(&hdev->flags, HCI_INQUIRY); hci_conn_check_pending(hdev); @@ -1768,7 +1768,7 @@ static void hci_inquiry_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags)) return; - smp_mb__after_clear_bit(); /* wake_up_bit advises about this barrier */ + smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ wake_up_bit(&hdev->flags, HCI_INQUIRY); if (!test_bit(HCI_MGMT, &hdev->dev_flags)) diff --git a/net/core/dev.c b/net/core/dev.c index 5b3042e69f8..e14f1cba591 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -1326,7 +1326,7 @@ static int __dev_close_many(struct list_head *head) * dev->stop() will invoke napi_disable() on all of it's * napi_struct instances on this device. */ - smp_mb__after_clear_bit(); /* Commit netif_running(). */ + smp_mb__after_atomic(); /* Commit netif_running(). */ } dev_deactivate_many(head); @@ -3343,7 +3343,7 @@ static void net_tx_action(struct softirq_action *h) root_lock = qdisc_lock(q); if (spin_trylock(root_lock)) { - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(__QDISC_STATE_SCHED, &q->state); qdisc_run(q); @@ -3353,7 +3353,7 @@ static void net_tx_action(struct softirq_action *h) &q->state)) { __netif_reschedule(q); } else { - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(__QDISC_STATE_SCHED, &q->state); } @@ -4244,7 +4244,7 @@ void __napi_complete(struct napi_struct *n) BUG_ON(n->gro_list); list_del(&n->poll_list); - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(NAPI_STATE_SCHED, &n->state); } EXPORT_SYMBOL(__napi_complete); diff --git a/net/core/link_watch.c b/net/core/link_watch.c index 9c3a839322b..bd0767e6b2b 100644 --- a/net/core/link_watch.c +++ b/net/core/link_watch.c @@ -147,7 +147,7 @@ static void linkwatch_do_dev(struct net_device *dev) * Make sure the above read is complete since it can be * rewritten as soon as we clear the bit below. */ - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); /* We are about to handle this device, * so new events can be accepted diff --git a/net/ipv4/inetpeer.c b/net/ipv4/inetpeer.c index 48f42446511..56cd458a1b8 100644 --- a/net/ipv4/inetpeer.c +++ b/net/ipv4/inetpeer.c @@ -522,7 +522,7 @@ EXPORT_SYMBOL_GPL(inet_getpeer); void inet_putpeer(struct inet_peer *p) { p->dtime = (__u32)jiffies; - smp_mb__before_atomic_dec(); + smp_mb__before_atomic(); atomic_dec(&p->refcnt); } EXPORT_SYMBOL_GPL(inet_putpeer); diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index 025e2509398..366cf06587b 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -1930,10 +1930,8 @@ static bool tcp_write_xmit(struct sock *sk, unsigned int mss_now, int nonagle, /* It is possible TX completion already happened * before we set TSQ_THROTTLED, so we must * test again the condition. - * We abuse smp_mb__after_clear_bit() because - * there is no smp_mb__after_set_bit() yet */ - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); if (atomic_read(&sk->sk_wmem_alloc) > limit) break; } diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c index 75421f2ba8b..1f4f954c4b4 100644 --- a/net/netfilter/nf_conntrack_core.c +++ b/net/netfilter/nf_conntrack_core.c @@ -914,7 +914,7 @@ void nf_conntrack_free(struct nf_conn *ct) nf_ct_ext_destroy(ct); nf_ct_ext_free(ct); kmem_cache_free(net->ct.nf_conntrack_cachep, ct); - smp_mb__before_atomic_dec(); + smp_mb__before_atomic(); atomic_dec(&net->ct.count); } EXPORT_SYMBOL_GPL(nf_conntrack_free); diff --git a/net/rds/ib_recv.c b/net/rds/ib_recv.c index b7ebe23cded..d67de453c35 100644 --- a/net/rds/ib_recv.c +++ b/net/rds/ib_recv.c @@ -598,7 +598,7 @@ static void rds_ib_set_ack(struct rds_ib_connection *ic, u64 seq, { atomic64_set(&ic->i_ack_next, seq); if (ack_required) { - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); set_bit(IB_ACK_REQUESTED, &ic->i_ack_flags); } } @@ -606,7 +606,7 @@ static void rds_ib_set_ack(struct rds_ib_connection *ic, u64 seq, static u64 rds_ib_get_ack(struct rds_ib_connection *ic) { clear_bit(IB_ACK_REQUESTED, &ic->i_ack_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); return atomic64_read(&ic->i_ack_next); } diff --git a/net/rds/iw_recv.c b/net/rds/iw_recv.c index 45033358358..aa8bf678600 100644 --- a/net/rds/iw_recv.c +++ b/net/rds/iw_recv.c @@ -429,7 +429,7 @@ static void rds_iw_set_ack(struct rds_iw_connection *ic, u64 seq, { atomic64_set(&ic->i_ack_next, seq); if (ack_required) { - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); set_bit(IB_ACK_REQUESTED, &ic->i_ack_flags); } } @@ -437,7 +437,7 @@ static void rds_iw_set_ack(struct rds_iw_connection *ic, u64 seq, static u64 rds_iw_get_ack(struct rds_iw_connection *ic) { clear_bit(IB_ACK_REQUESTED, &ic->i_ack_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); return atomic64_read(&ic->i_ack_next); } diff --git a/net/rds/send.c b/net/rds/send.c index a82fb660ec0..23718160d71 100644 --- a/net/rds/send.c +++ b/net/rds/send.c @@ -107,7 +107,7 @@ static int acquire_in_xmit(struct rds_connection *conn) static void release_in_xmit(struct rds_connection *conn) { clear_bit(RDS_IN_XMIT, &conn->c_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); /* * We don't use wait_on_bit()/wake_up_bit() because our waking is in a * hot path and finding waiters is very rare. We don't want to walk @@ -661,7 +661,7 @@ void rds_send_drop_acked(struct rds_connection *conn, u64 ack, /* order flag updates with spin locks */ if (!list_empty(&list)) - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); spin_unlock_irqrestore(&conn->c_lock, flags); @@ -691,7 +691,7 @@ void rds_send_drop_to(struct rds_sock *rs, struct sockaddr_in *dest) } /* order flag updates with the rs lock */ - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); spin_unlock_irqrestore(&rs->rs_lock, flags); diff --git a/net/rds/tcp_send.c b/net/rds/tcp_send.c index 81cf5a4c5e4..53b17ca0dff 100644 --- a/net/rds/tcp_send.c +++ b/net/rds/tcp_send.c @@ -93,7 +93,7 @@ int rds_tcp_xmit(struct rds_connection *conn, struct rds_message *rm, rm->m_ack_seq = tc->t_last_sent_nxt + sizeof(struct rds_header) + be32_to_cpu(rm->m_inc.i_hdr.h_len) - 1; - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); set_bit(RDS_MSG_HAS_ACK_SEQ, &rm->m_flags); tc->t_last_expected_una = rm->m_ack_seq + 1; diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c index 5285ead196c..247e973544b 100644 --- a/net/sunrpc/auth.c +++ b/net/sunrpc/auth.c @@ -296,7 +296,7 @@ static void rpcauth_unhash_cred_locked(struct rpc_cred *cred) { hlist_del_rcu(&cred->cr_hash); - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(RPCAUTH_CRED_HASHED, &cred->cr_flags); } diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c index 36e431ee1c9..b6e440baccc 100644 --- a/net/sunrpc/auth_gss/auth_gss.c +++ b/net/sunrpc/auth_gss/auth_gss.c @@ -143,7 +143,7 @@ gss_cred_set_ctx(struct rpc_cred *cred, struct gss_cl_ctx *ctx) gss_get_ctx(ctx); rcu_assign_pointer(gss_cred->gc_ctx, ctx); set_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags); - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(RPCAUTH_CRED_NEW, &cred->cr_flags); } diff --git a/net/sunrpc/backchannel_rqst.c b/net/sunrpc/backchannel_rqst.c index 3513d559bc4..9761a0da964 100644 --- a/net/sunrpc/backchannel_rqst.c +++ b/net/sunrpc/backchannel_rqst.c @@ -244,10 +244,10 @@ void xprt_free_bc_request(struct rpc_rqst *req) dprintk("RPC: free backchannel req=%p\n", req); req->rq_connect_cookie = xprt->connect_cookie - 1; - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); WARN_ON_ONCE(!test_bit(RPC_BC_PA_IN_USE, &req->rq_bc_pa_state)); clear_bit(RPC_BC_PA_IN_USE, &req->rq_bc_pa_state); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); if (!xprt_need_to_requeue(xprt)) { /* diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c index d173f79947c..89d051de6b3 100644 --- a/net/sunrpc/xprt.c +++ b/net/sunrpc/xprt.c @@ -230,9 +230,9 @@ static void xprt_clear_locked(struct rpc_xprt *xprt) { xprt->snd_task = NULL; if (!test_bit(XPRT_CLOSE_WAIT, &xprt->state)) { - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(XPRT_LOCKED, &xprt->state); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); } else queue_work(rpciod_workqueue, &xprt->task_cleanup); } diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index 25a3dcf15ca..402a7e9a16b 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -893,11 +893,11 @@ static void xs_close(struct rpc_xprt *xprt) xs_reset_transport(transport); xprt->reestablish_timeout = 0; - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(XPRT_CONNECTION_ABORT, &xprt->state); clear_bit(XPRT_CLOSE_WAIT, &xprt->state); clear_bit(XPRT_CLOSING, &xprt->state); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); xprt_disconnect_done(xprt); } @@ -1497,12 +1497,12 @@ static void xs_tcp_cancel_linger_timeout(struct rpc_xprt *xprt) static void xs_sock_reset_connection_flags(struct rpc_xprt *xprt) { - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(XPRT_CONNECTION_ABORT, &xprt->state); clear_bit(XPRT_CONNECTION_CLOSE, &xprt->state); clear_bit(XPRT_CLOSE_WAIT, &xprt->state); clear_bit(XPRT_CLOSING, &xprt->state); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); } static void xs_sock_mark_closed(struct rpc_xprt *xprt) @@ -1556,10 +1556,10 @@ static void xs_tcp_state_change(struct sock *sk) xprt->connect_cookie++; xprt->reestablish_timeout = 0; set_bit(XPRT_CLOSING, &xprt->state); - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(XPRT_CONNECTED, &xprt->state); clear_bit(XPRT_CLOSE_WAIT, &xprt->state); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); xs_tcp_schedule_linger_timeout(xprt, xs_tcp_fin_timeout); break; case TCP_CLOSE_WAIT: @@ -1578,9 +1578,9 @@ static void xs_tcp_state_change(struct sock *sk) case TCP_LAST_ACK: set_bit(XPRT_CLOSING, &xprt->state); xs_tcp_schedule_linger_timeout(xprt, xs_tcp_fin_timeout); - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(XPRT_CONNECTED, &xprt->state); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); break; case TCP_CLOSE: xs_tcp_cancel_linger_timeout(xprt); diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index bb7e8ba821f..749f80c21e2 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -1207,7 +1207,7 @@ restart: sk->sk_state = TCP_ESTABLISHED; sock_hold(newsk); - smp_mb__after_atomic_inc(); /* sock_hold() does an atomic_inc() */ + smp_mb__after_atomic(); /* sock_hold() does an atomic_inc() */ unix_peer(sk) = newsk; unix_state_unlock(sk); diff --git a/sound/pci/bt87x.c b/sound/pci/bt87x.c index 8546711d12f..70951fd9b35 100644 --- a/sound/pci/bt87x.c +++ b/sound/pci/bt87x.c @@ -443,7 +443,7 @@ static int snd_bt87x_pcm_open(struct snd_pcm_substream *substream) _error: clear_bit(0, &chip->opened); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); return err; } @@ -458,7 +458,7 @@ static int snd_bt87x_close(struct snd_pcm_substream *substream) chip->substream = NULL; clear_bit(0, &chip->opened); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); return 0; } -- cgit v1.2.3-70-g09d2 From a20c93e3160e37ecccc738d8eef085c8507949ed Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 16 Apr 2014 15:07:21 +0200 Subject: nfs: remove ->write_pageio_init from rpc ops The write_pageio_init method is just a very convoluted way to grab the right nfs_pageio_ops vector. The vector to chose is not a choice of protocol version, but just a pNFS vs MDS I/O choice that can simply be done inside nfs_pageio_init_write based on the presence of a layout driver, and a new force_mds flag to the special case of falling back to MDS I/O on a pNFS-capable volume. Signed-off-by: Christoph Hellwig Tested-by: Anna Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/direct.c | 4 ++-- fs/nfs/internal.h | 2 +- fs/nfs/nfs3proc.c | 1 - fs/nfs/nfs4proc.c | 1 - fs/nfs/pnfs.c | 16 +--------------- fs/nfs/pnfs.h | 8 -------- fs/nfs/proc.c | 1 - fs/nfs/write.c | 21 +++++++++++++-------- include/linux/nfs_xdr.h | 2 -- 9 files changed, 17 insertions(+), 39 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index b8797ae6831..6a31102b081 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -564,7 +564,7 @@ static void nfs_direct_write_reschedule(struct nfs_direct_req *dreq) dreq->count = 0; get_dreq(dreq); - NFS_PROTO(dreq->inode)->write_pageio_init(&desc, dreq->inode, FLUSH_STABLE, + nfs_pageio_init_write(&desc, dreq->inode, FLUSH_STABLE, false, &nfs_direct_write_completion_ops); desc.pg_dreq = dreq; @@ -874,7 +874,7 @@ static ssize_t nfs_direct_write_schedule_iovec(struct nfs_direct_req *dreq, size_t requested_bytes = 0; unsigned long seg; - NFS_PROTO(inode)->write_pageio_init(&desc, inode, FLUSH_COND_STABLE, + nfs_pageio_init_write(&desc, inode, FLUSH_COND_STABLE, false, &nfs_direct_write_completion_ops); desc.pg_dreq = dreq; get_dreq(dreq); diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index dd8bfc2e246..8431083de17 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -422,7 +422,7 @@ int nfs_remount(struct super_block *sb, int *flags, char *raw_data); /* write.c */ extern void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, - struct inode *inode, int ioflags, + struct inode *inode, int ioflags, bool force_mds, const struct nfs_pgio_completion_ops *compl_ops); extern struct nfs_write_header *nfs_writehdr_alloc(void); extern void nfs_writehdr_free(struct nfs_pgio_header *hdr); diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c index db60149c457..e9848805390 100644 --- a/fs/nfs/nfs3proc.c +++ b/fs/nfs/nfs3proc.c @@ -951,7 +951,6 @@ const struct nfs_rpc_ops nfs_v3_clientops = { .read_rpc_prepare = nfs3_proc_read_rpc_prepare, .read_done = nfs3_read_done, .write_setup = nfs3_proc_write_setup, - .write_pageio_init = nfs_pageio_init_write, .write_rpc_prepare = nfs3_proc_write_rpc_prepare, .write_done = nfs3_write_done, .commit_setup = nfs3_proc_commit_setup, diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 397be39c6dc..8da0c62966b 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -8437,7 +8437,6 @@ const struct nfs_rpc_ops nfs_v4_clientops = { .read_rpc_prepare = nfs4_proc_read_rpc_prepare, .read_done = nfs4_read_done, .write_setup = nfs4_proc_write_setup, - .write_pageio_init = pnfs_pageio_init_write, .write_rpc_prepare = nfs4_proc_write_rpc_prepare, .write_done = nfs4_write_done, .commit_setup = nfs4_proc_commit_setup, diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index cb53d450ae3..9edac9f01c2 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1447,20 +1447,6 @@ pnfs_pageio_init_read(struct nfs_pageio_descriptor *pgio, struct inode *inode, nfs_pageio_init(pgio, inode, ld->pg_read_ops, compl_ops, server->rsize, 0); } -void -pnfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, struct inode *inode, - int ioflags, - const struct nfs_pgio_completion_ops *compl_ops) -{ - struct nfs_server *server = NFS_SERVER(inode); - struct pnfs_layoutdriver_type *ld = server->pnfs_curr_ld; - - if (ld == NULL) - nfs_pageio_init_write(pgio, inode, ioflags, compl_ops); - else - nfs_pageio_init(pgio, inode, ld->pg_write_ops, compl_ops, server->wsize, ioflags); -} - bool pnfs_generic_pg_test(struct nfs_pageio_descriptor *pgio, struct nfs_page *prev, struct nfs_page *req) @@ -1496,7 +1482,7 @@ int pnfs_write_done_resend_to_mds(struct inode *inode, LIST_HEAD(failed); /* Resend all requests through the MDS */ - nfs_pageio_init_write(&pgio, inode, FLUSH_STABLE, compl_ops); + nfs_pageio_init_write(&pgio, inode, FLUSH_STABLE, true, compl_ops); pgio.pg_dreq = dreq; while (!list_empty(head)) { struct nfs_page *req = nfs_list_entry(head->next); diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h index 02379390977..e9ac8fbaee3 100644 --- a/fs/nfs/pnfs.h +++ b/fs/nfs/pnfs.h @@ -182,8 +182,6 @@ void pnfs_put_lseg(struct pnfs_layout_segment *lseg); void pnfs_pageio_init_read(struct nfs_pageio_descriptor *, struct inode *, const struct nfs_pgio_completion_ops *); -void pnfs_pageio_init_write(struct nfs_pageio_descriptor *, struct inode *, - int, const struct nfs_pgio_completion_ops *); void set_pnfs_layoutdriver(struct nfs_server *, const struct nfs_fh *, u32); void unset_pnfs_layoutdriver(struct nfs_server *); @@ -467,12 +465,6 @@ static inline void pnfs_pageio_init_read(struct nfs_pageio_descriptor *pgio, str nfs_pageio_init_read(pgio, inode, compl_ops); } -static inline void pnfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, struct inode *inode, int ioflags, - const struct nfs_pgio_completion_ops *compl_ops) -{ - nfs_pageio_init_write(pgio, inode, ioflags, compl_ops); -} - static inline int pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how, struct nfs_commit_info *cinfo) diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c index e55ce9e8b03..f9cc29590a1 100644 --- a/fs/nfs/proc.c +++ b/fs/nfs/proc.c @@ -739,7 +739,6 @@ const struct nfs_rpc_ops nfs_v2_clientops = { .read_rpc_prepare = nfs_proc_read_rpc_prepare, .read_done = nfs_read_done, .write_setup = nfs_proc_write_setup, - .write_pageio_init = nfs_pageio_init_write, .write_rpc_prepare = nfs_proc_write_rpc_prepare, .write_done = nfs_write_done, .commit_setup = nfs_proc_commit_setup, diff --git a/fs/nfs/write.c b/fs/nfs/write.c index cd7c651f9b8..ee6d46fde76 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -354,10 +354,8 @@ static int nfs_writepage_locked(struct page *page, struct writeback_control *wbc struct nfs_pageio_descriptor pgio; int err; - NFS_PROTO(page_file_mapping(page)->host)->write_pageio_init(&pgio, - page->mapping->host, - wb_priority(wbc), - &nfs_async_write_completion_ops); + nfs_pageio_init_write(&pgio, page->mapping->host, wb_priority(wbc), + false, &nfs_async_write_completion_ops); err = nfs_do_writepage(page, wbc, &pgio); nfs_pageio_complete(&pgio); if (err < 0) @@ -400,7 +398,8 @@ int nfs_writepages(struct address_space *mapping, struct writeback_control *wbc) nfs_inc_stats(inode, NFSIOS_VFSWRITEPAGES); - NFS_PROTO(inode)->write_pageio_init(&pgio, inode, wb_priority(wbc), &nfs_async_write_completion_ops); + nfs_pageio_init_write(&pgio, inode, wb_priority(wbc), false, + &nfs_async_write_completion_ops); err = write_cache_pages(mapping, wbc, nfs_writepages_callback, &pgio); nfs_pageio_complete(&pgio); @@ -1282,11 +1281,17 @@ static const struct nfs_pageio_ops nfs_pageio_write_ops = { }; void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, - struct inode *inode, int ioflags, + struct inode *inode, int ioflags, bool force_mds, const struct nfs_pgio_completion_ops *compl_ops) { - nfs_pageio_init(pgio, inode, &nfs_pageio_write_ops, compl_ops, - NFS_SERVER(inode)->wsize, ioflags); + struct nfs_server *server = NFS_SERVER(inode); + const struct nfs_pageio_ops *pg_ops = &nfs_pageio_write_ops; + +#ifdef CONFIG_NFS_V4_1 + if (server->pnfs_curr_ld && !force_mds) + pg_ops = server->pnfs_curr_ld->pg_write_ops; +#endif + nfs_pageio_init(pgio, inode, pg_ops, compl_ops, server->wsize, ioflags); } EXPORT_SYMBOL_GPL(nfs_pageio_init_write); diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 6fb5b2335b5..78216f85952 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1471,8 +1471,6 @@ struct nfs_rpc_ops { int (*read_rpc_prepare)(struct rpc_task *, struct nfs_read_data *); int (*read_done) (struct rpc_task *, struct nfs_read_data *); void (*write_setup) (struct nfs_write_data *, struct rpc_message *); - void (*write_pageio_init)(struct nfs_pageio_descriptor *, struct inode *, int, - const struct nfs_pgio_completion_ops *); int (*write_rpc_prepare)(struct rpc_task *, struct nfs_write_data *); int (*write_done) (struct rpc_task *, struct nfs_write_data *); void (*commit_setup) (struct nfs_commit_data *, struct rpc_message *); -- cgit v1.2.3-70-g09d2 From 3c6b899c49e5e9c2803b59ee553eddaf69cea7f6 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Tue, 6 May 2014 09:12:24 -0400 Subject: NFS: Create a common argument structure for reads and writes Reads and writes have very similar arguments. This patch combines them together and documents the few fields used only by write. Signed-off-by: Anna Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/nfs2xdr.c | 8 ++++---- fs/nfs/nfs3xdr.c | 8 ++++---- fs/nfs/nfs4proc.c | 4 ++-- fs/nfs/nfs4xdr.c | 10 ++++++---- fs/nfs/read.c | 2 +- fs/nfs/write.c | 2 +- include/linux/nfs_xdr.h | 47 +++++++++++++++++++---------------------------- 7 files changed, 37 insertions(+), 44 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c index 62db136339e..461cd8bd940 100644 --- a/fs/nfs/nfs2xdr.c +++ b/fs/nfs/nfs2xdr.c @@ -613,7 +613,7 @@ static void nfs2_xdr_enc_readlinkargs(struct rpc_rqst *req, * }; */ static void encode_readargs(struct xdr_stream *xdr, - const struct nfs_readargs *args) + const struct nfs_pgio_args *args) { u32 offset = args->offset; u32 count = args->count; @@ -629,7 +629,7 @@ static void encode_readargs(struct xdr_stream *xdr, static void nfs2_xdr_enc_readargs(struct rpc_rqst *req, struct xdr_stream *xdr, - const struct nfs_readargs *args) + const struct nfs_pgio_args *args) { encode_readargs(xdr, args); prepare_reply_buffer(req, args->pages, args->pgbase, @@ -649,7 +649,7 @@ static void nfs2_xdr_enc_readargs(struct rpc_rqst *req, * }; */ static void encode_writeargs(struct xdr_stream *xdr, - const struct nfs_writeargs *args) + const struct nfs_pgio_args *args) { u32 offset = args->offset; u32 count = args->count; @@ -669,7 +669,7 @@ static void encode_writeargs(struct xdr_stream *xdr, static void nfs2_xdr_enc_writeargs(struct rpc_rqst *req, struct xdr_stream *xdr, - const struct nfs_writeargs *args) + const struct nfs_pgio_args *args) { encode_writeargs(xdr, args); xdr->buf->flags |= XDRBUF_WRITE; diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c index fa6d72131c1..02f16c21200 100644 --- a/fs/nfs/nfs3xdr.c +++ b/fs/nfs/nfs3xdr.c @@ -953,7 +953,7 @@ static void nfs3_xdr_enc_readlink3args(struct rpc_rqst *req, * }; */ static void encode_read3args(struct xdr_stream *xdr, - const struct nfs_readargs *args) + const struct nfs_pgio_args *args) { __be32 *p; @@ -966,7 +966,7 @@ static void encode_read3args(struct xdr_stream *xdr, static void nfs3_xdr_enc_read3args(struct rpc_rqst *req, struct xdr_stream *xdr, - const struct nfs_readargs *args) + const struct nfs_pgio_args *args) { encode_read3args(xdr, args); prepare_reply_buffer(req, args->pages, args->pgbase, @@ -992,7 +992,7 @@ static void nfs3_xdr_enc_read3args(struct rpc_rqst *req, * }; */ static void encode_write3args(struct xdr_stream *xdr, - const struct nfs_writeargs *args) + const struct nfs_pgio_args *args) { __be32 *p; @@ -1008,7 +1008,7 @@ static void encode_write3args(struct xdr_stream *xdr, static void nfs3_xdr_enc_write3args(struct rpc_rqst *req, struct xdr_stream *xdr, - const struct nfs_writeargs *args) + const struct nfs_pgio_args *args) { encode_write3args(xdr, args); xdr->buf->flags |= XDRBUF_WRITE; diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 21cd1f2ee35..4794ca69336 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -4055,7 +4055,7 @@ static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) } static bool nfs4_read_stateid_changed(struct rpc_task *task, - struct nfs_readargs *args) + struct nfs_pgio_args *args) { if (!nfs4_error_stateid_expired(task->tk_status) || @@ -4121,7 +4121,7 @@ static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data } static bool nfs4_write_stateid_changed(struct rpc_task *task, - struct nfs_writeargs *args) + struct nfs_pgio_args *args) { if (!nfs4_error_stateid_expired(task->tk_status) || diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 73ce8d4fe2c..032159c36a5 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -1556,7 +1556,8 @@ static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr) encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr); } -static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr) +static void encode_read(struct xdr_stream *xdr, const struct nfs_pgio_args *args, + struct compound_hdr *hdr) { __be32 *p; @@ -1701,7 +1702,8 @@ static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4 encode_nfs4_verifier(xdr, &arg->confirm); } -static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr) +static void encode_write(struct xdr_stream *xdr, const struct nfs_pgio_args *args, + struct compound_hdr *hdr) { __be32 *p; @@ -2451,7 +2453,7 @@ static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr, * Encode a READ request */ static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr, - struct nfs_readargs *args) + struct nfs_pgio_args *args) { struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), @@ -2513,7 +2515,7 @@ static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr, * Encode a WRITE request */ static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr, - struct nfs_writeargs *args) + struct nfs_pgio_args *args) { struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), diff --git a/fs/nfs/read.c b/fs/nfs/read.c index 7f87461be3a..46d55520602 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -470,7 +470,7 @@ int nfs_readpage_result(struct rpc_task *task, struct nfs_read_data *data) static void nfs_readpage_retry(struct rpc_task *task, struct nfs_read_data *data) { - struct nfs_readargs *argp = &data->args; + struct nfs_pgio_args *argp = &data->args; struct nfs_readres *resp = &data->res; /* This is a short read! */ diff --git a/fs/nfs/write.c b/fs/nfs/write.c index ee6d46fde76..25ba3830ec8 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -1388,7 +1388,7 @@ static int nfs_should_remove_suid(const struct inode *inode) */ void nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data) { - struct nfs_writeargs *argp = &data->args; + struct nfs_pgio_args *argp = &data->args; struct nfs_writeres *resp = &data->res; struct inode *inode = data->header->inode; int status; diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 3e8fc1fe585..5875001928f 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -491,18 +491,6 @@ struct nfs4_delegreturnres { /* * Arguments to the read call. */ -struct nfs_readargs { - struct nfs4_sequence_args seq_args; - struct nfs_fh * fh; - struct nfs_open_context *context; - struct nfs_lock_context *lock_context; - nfs4_stateid stateid; - __u64 offset; - __u32 count; - unsigned int pgbase; - struct page ** pages; -}; - struct nfs_readres { struct nfs4_sequence_res seq_res; struct nfs_fattr * fattr; @@ -513,20 +501,6 @@ struct nfs_readres { /* * Arguments to the write call. */ -struct nfs_writeargs { - struct nfs4_sequence_args seq_args; - struct nfs_fh * fh; - struct nfs_open_context *context; - struct nfs_lock_context *lock_context; - nfs4_stateid stateid; - __u64 offset; - __u32 count; - enum nfs3_stable_how stable; - unsigned int pgbase; - struct page ** pages; - const u32 * bitmask; -}; - struct nfs_write_verifier { char data[8]; }; @@ -544,6 +518,23 @@ struct nfs_writeres { const struct nfs_server *server; }; +/* + * Arguments shared by the read and write call. + */ +struct nfs_pgio_args { + struct nfs4_sequence_args seq_args; + struct nfs_fh * fh; + struct nfs_open_context *context; + struct nfs_lock_context *lock_context; + nfs4_stateid stateid; + __u64 offset; + __u32 count; + unsigned int pgbase; + struct page ** pages; + const u32 * bitmask; /* used by write */ + enum nfs3_stable_how stable; /* used by write */ +}; + /* * Arguments to the commit call. */ @@ -1269,7 +1260,7 @@ struct nfs_read_data { struct list_head list; struct rpc_task task; struct nfs_fattr fattr; /* fattr storage */ - struct nfs_readargs args; + struct nfs_pgio_args args; struct nfs_readres res; unsigned long timestamp; /* For lease renewal */ int (*read_done_cb) (struct rpc_task *task, struct nfs_read_data *data); @@ -1321,7 +1312,7 @@ struct nfs_write_data { struct rpc_task task; struct nfs_fattr fattr; struct nfs_writeverf verf; - struct nfs_writeargs args; /* argument struct */ + struct nfs_pgio_args args; /* argument struct */ struct nfs_writeres res; /* result struct */ unsigned long timestamp; /* For lease renewal */ int (*write_done_cb) (struct rpc_task *task, struct nfs_write_data *data); -- cgit v1.2.3-70-g09d2 From 9137bdf3d241fc2cbeb2a8ced51d1546150aa6a1 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Tue, 6 May 2014 09:12:25 -0400 Subject: NFS: Create a common results structure for reads and writes Reads and writes have very similar results. This patch combines the two structs together with comments to show where the differing fields are used. Signed-off-by: Anna Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/nfs2xdr.c | 6 +++--- fs/nfs/nfs3xdr.c | 8 ++++---- fs/nfs/nfs4xdr.c | 9 +++++---- fs/nfs/read.c | 2 +- fs/nfs/write.c | 2 +- include/linux/nfs_xdr.h | 32 ++++++++++++-------------------- 6 files changed, 26 insertions(+), 33 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c index 461cd8bd940..5f61b83f4a1 100644 --- a/fs/nfs/nfs2xdr.c +++ b/fs/nfs/nfs2xdr.c @@ -103,7 +103,7 @@ static void print_overflow_msg(const char *func, const struct xdr_stream *xdr) /* * typedef opaque nfsdata<>; */ -static int decode_nfsdata(struct xdr_stream *xdr, struct nfs_readres *result) +static int decode_nfsdata(struct xdr_stream *xdr, struct nfs_pgio_res *result) { u32 recvd, count; __be32 *p; @@ -857,7 +857,7 @@ out_default: * }; */ static int nfs2_xdr_dec_readres(struct rpc_rqst *req, struct xdr_stream *xdr, - struct nfs_readres *result) + struct nfs_pgio_res *result) { enum nfs_stat status; int error; @@ -878,7 +878,7 @@ out_default: } static int nfs2_xdr_dec_writeres(struct rpc_rqst *req, struct xdr_stream *xdr, - struct nfs_writeres *result) + struct nfs_pgio_res *result) { /* All NFSv2 writes are "file sync" writes */ result->verf->committed = NFS_FILE_SYNC; diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c index 02f16c21200..8f4cbe7f4aa 100644 --- a/fs/nfs/nfs3xdr.c +++ b/fs/nfs/nfs3xdr.c @@ -1589,7 +1589,7 @@ out_default: * }; */ static int decode_read3resok(struct xdr_stream *xdr, - struct nfs_readres *result) + struct nfs_pgio_res *result) { u32 eof, count, ocount, recvd; __be32 *p; @@ -1625,7 +1625,7 @@ out_overflow: } static int nfs3_xdr_dec_read3res(struct rpc_rqst *req, struct xdr_stream *xdr, - struct nfs_readres *result) + struct nfs_pgio_res *result) { enum nfs_stat status; int error; @@ -1673,7 +1673,7 @@ out_status: * }; */ static int decode_write3resok(struct xdr_stream *xdr, - struct nfs_writeres *result) + struct nfs_pgio_res *result) { __be32 *p; @@ -1697,7 +1697,7 @@ out_eio: } static int nfs3_xdr_dec_write3res(struct rpc_rqst *req, struct xdr_stream *xdr, - struct nfs_writeres *result) + struct nfs_pgio_res *result) { enum nfs_stat status; int error; diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 032159c36a5..939ae606cfa 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -5087,7 +5087,8 @@ static int decode_putrootfh(struct xdr_stream *xdr) return decode_op_hdr(xdr, OP_PUTROOTFH); } -static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res) +static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, + struct nfs_pgio_res *res) { __be32 *p; uint32_t count, eof, recvd; @@ -5341,7 +5342,7 @@ static int decode_setclientid_confirm(struct xdr_stream *xdr) return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM); } -static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res) +static int decode_write(struct xdr_stream *xdr, struct nfs_pgio_res *res) { __be32 *p; int status; @@ -6638,7 +6639,7 @@ out: * Decode Read response */ static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr, - struct nfs_readres *res) + struct nfs_pgio_res *res) { struct compound_hdr hdr; int status; @@ -6663,7 +6664,7 @@ out: * Decode WRITE response */ static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr, - struct nfs_writeres *res) + struct nfs_pgio_res *res) { struct compound_hdr hdr; int status; diff --git a/fs/nfs/read.c b/fs/nfs/read.c index 46d55520602..473bba35a2c 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -471,7 +471,7 @@ int nfs_readpage_result(struct rpc_task *task, struct nfs_read_data *data) static void nfs_readpage_retry(struct rpc_task *task, struct nfs_read_data *data) { struct nfs_pgio_args *argp = &data->args; - struct nfs_readres *resp = &data->res; + struct nfs_pgio_res *resp = &data->res; /* This is a short read! */ nfs_inc_stats(data->header->inode, NFSIOS_SHORTREAD); diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 25ba3830ec8..d392a70092f 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -1389,7 +1389,7 @@ static int nfs_should_remove_suid(const struct inode *inode) void nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data) { struct nfs_pgio_args *argp = &data->args; - struct nfs_writeres *resp = &data->res; + struct nfs_pgio_res *resp = &data->res; struct inode *inode = data->header->inode; int status; diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 5875001928f..381f832b03c 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -488,16 +488,6 @@ struct nfs4_delegreturnres { const struct nfs_server *server; }; -/* - * Arguments to the read call. - */ -struct nfs_readres { - struct nfs4_sequence_res seq_res; - struct nfs_fattr * fattr; - __u32 count; - int eof; -}; - /* * Arguments to the write call. */ @@ -510,14 +500,6 @@ struct nfs_writeverf { enum nfs3_stable_how committed; }; -struct nfs_writeres { - struct nfs4_sequence_res seq_res; - struct nfs_fattr * fattr; - struct nfs_writeverf * verf; - __u32 count; - const struct nfs_server *server; -}; - /* * Arguments shared by the read and write call. */ @@ -535,6 +517,16 @@ struct nfs_pgio_args { enum nfs3_stable_how stable; /* used by write */ }; +struct nfs_pgio_res { + struct nfs4_sequence_res seq_res; + struct nfs_fattr * fattr; + __u32 count; + int eof; /* used by read */ + struct nfs_writeverf * verf; /* used by write */ + const struct nfs_server *server; /* used by write */ + +}; + /* * Arguments to the commit call. */ @@ -1261,7 +1253,7 @@ struct nfs_read_data { struct rpc_task task; struct nfs_fattr fattr; /* fattr storage */ struct nfs_pgio_args args; - struct nfs_readres res; + struct nfs_pgio_res res; unsigned long timestamp; /* For lease renewal */ int (*read_done_cb) (struct rpc_task *task, struct nfs_read_data *data); __u64 mds_offset; @@ -1313,7 +1305,7 @@ struct nfs_write_data { struct nfs_fattr fattr; struct nfs_writeverf verf; struct nfs_pgio_args args; /* argument struct */ - struct nfs_writeres res; /* result struct */ + struct nfs_pgio_res res; /* result struct */ unsigned long timestamp; /* For lease renewal */ int (*write_done_cb) (struct rpc_task *task, struct nfs_write_data *data); __u64 mds_offset; /* Filelayout dense stripe */ -- cgit v1.2.3-70-g09d2 From 9c7e1b3d50b56b8d8f6237ed232350b7c6476cd5 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Tue, 6 May 2014 09:12:26 -0400 Subject: NFS: Create a common read and write data struct At this point, the only difference between nfs_read_data and nfs_write_data is the write verifier. Signed-off-by: Anna Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/blocklayout/blocklayout.c | 22 ++++++++++---------- fs/nfs/internal.h | 10 ++++----- fs/nfs/nfs3proc.c | 12 +++++------ fs/nfs/nfs4_fs.h | 4 ++-- fs/nfs/nfs4filelayout.c | 34 +++++++++++++++---------------- fs/nfs/nfs4proc.c | 30 +++++++++++++-------------- fs/nfs/nfs4trace.h | 8 ++++---- fs/nfs/objlayout/objio_osd.c | 6 +++--- fs/nfs/objlayout/objlayout.c | 16 +++++++-------- fs/nfs/objlayout/objlayout.h | 8 ++++---- fs/nfs/pnfs.c | 26 ++++++++++++------------ fs/nfs/pnfs.h | 10 ++++----- fs/nfs/proc.c | 12 +++++------ fs/nfs/read.c | 32 ++++++++++++++--------------- fs/nfs/write.c | 36 ++++++++++++++++---------------- include/linux/nfs_fs.h | 4 ++-- include/linux/nfs_xdr.h | 44 ++++++++++++++-------------------------- 17 files changed, 150 insertions(+), 164 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c index 65d849bdf77..206cc68c969 100644 --- a/fs/nfs/blocklayout/blocklayout.c +++ b/fs/nfs/blocklayout/blocklayout.c @@ -210,7 +210,7 @@ static void bl_end_io_read(struct bio *bio, int err) SetPageUptodate(bvec->bv_page); if (err) { - struct nfs_read_data *rdata = par->data; + struct nfs_pgio_data *rdata = par->data; struct nfs_pgio_header *header = rdata->header; if (!header->pnfs_error) @@ -224,17 +224,17 @@ static void bl_end_io_read(struct bio *bio, int err) static void bl_read_cleanup(struct work_struct *work) { struct rpc_task *task; - struct nfs_read_data *rdata; + struct nfs_pgio_data *rdata; dprintk("%s enter\n", __func__); task = container_of(work, struct rpc_task, u.tk_work); - rdata = container_of(task, struct nfs_read_data, task); + rdata = container_of(task, struct nfs_pgio_data, task); pnfs_ld_read_done(rdata); } static void bl_end_par_io_read(void *data, int unused) { - struct nfs_read_data *rdata = data; + struct nfs_pgio_data *rdata = data; rdata->task.tk_status = rdata->header->pnfs_error; INIT_WORK(&rdata->task.u.tk_work, bl_read_cleanup); @@ -242,7 +242,7 @@ bl_end_par_io_read(void *data, int unused) } static enum pnfs_try_status -bl_read_pagelist(struct nfs_read_data *rdata) +bl_read_pagelist(struct nfs_pgio_data *rdata) { struct nfs_pgio_header *header = rdata->header; int i, hole; @@ -390,7 +390,7 @@ static void bl_end_io_write_zero(struct bio *bio, int err) } if (unlikely(err)) { - struct nfs_write_data *data = par->data; + struct nfs_pgio_data *data = par->data; struct nfs_pgio_header *header = data->header; if (!header->pnfs_error) @@ -405,7 +405,7 @@ static void bl_end_io_write(struct bio *bio, int err) { struct parallel_io *par = bio->bi_private; const int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); - struct nfs_write_data *data = par->data; + struct nfs_pgio_data *data = par->data; struct nfs_pgio_header *header = data->header; if (!uptodate) { @@ -423,10 +423,10 @@ static void bl_end_io_write(struct bio *bio, int err) static void bl_write_cleanup(struct work_struct *work) { struct rpc_task *task; - struct nfs_write_data *wdata; + struct nfs_pgio_data *wdata; dprintk("%s enter\n", __func__); task = container_of(work, struct rpc_task, u.tk_work); - wdata = container_of(task, struct nfs_write_data, task); + wdata = container_of(task, struct nfs_pgio_data, task); if (likely(!wdata->header->pnfs_error)) { /* Marks for LAYOUTCOMMIT */ mark_extents_written(BLK_LSEG2EXT(wdata->header->lseg), @@ -438,7 +438,7 @@ static void bl_write_cleanup(struct work_struct *work) /* Called when last of bios associated with a bl_write_pagelist call finishes */ static void bl_end_par_io_write(void *data, int num_se) { - struct nfs_write_data *wdata = data; + struct nfs_pgio_data *wdata = data; if (unlikely(wdata->header->pnfs_error)) { bl_free_short_extents(&BLK_LSEG2EXT(wdata->header->lseg)->bl_inval, @@ -673,7 +673,7 @@ check_page: } static enum pnfs_try_status -bl_write_pagelist(struct nfs_write_data *wdata, int sync) +bl_write_pagelist(struct nfs_pgio_data *wdata, int sync) { struct nfs_pgio_header *header = wdata->header; int i, ret, npg_zero, pg_index, last = 0; diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 98fe618db2a..af01b80412d 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -401,13 +401,13 @@ extern void nfs_pageio_init_read(struct nfs_pageio_descriptor *pgio, struct inode *inode, bool force_mds, const struct nfs_pgio_completion_ops *compl_ops); extern int nfs_initiate_read(struct rpc_clnt *clnt, - struct nfs_read_data *data, + struct nfs_pgio_data *data, const struct rpc_call_ops *call_ops, int flags); extern void nfs_read_prepare(struct rpc_task *task, void *calldata); extern int nfs_generic_pagein(struct nfs_pageio_descriptor *desc, struct nfs_pgio_header *hdr); extern void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio); -extern void nfs_readdata_release(struct nfs_read_data *rdata); +extern void nfs_readdata_release(struct nfs_pgio_data *rdata); /* super.c */ void nfs_clone_super(struct super_block *, struct nfs_mount_info *); @@ -429,10 +429,10 @@ extern void nfs_writehdr_free(struct nfs_pgio_header *hdr); extern int nfs_generic_flush(struct nfs_pageio_descriptor *desc, struct nfs_pgio_header *hdr); extern void nfs_pageio_reset_write_mds(struct nfs_pageio_descriptor *pgio); -extern void nfs_writedata_release(struct nfs_write_data *wdata); +extern void nfs_writedata_release(struct nfs_pgio_data *wdata); extern void nfs_commit_free(struct nfs_commit_data *p); extern int nfs_initiate_write(struct rpc_clnt *clnt, - struct nfs_write_data *data, + struct nfs_pgio_data *data, const struct rpc_call_ops *call_ops, int how, int flags); extern void nfs_write_prepare(struct rpc_task *task, void *calldata); @@ -492,7 +492,7 @@ static inline void nfs_inode_dio_wait(struct inode *inode) extern ssize_t nfs_dreq_bytes_left(struct nfs_direct_req *dreq); /* nfs4proc.c */ -extern void __nfs4_read_done_cb(struct nfs_read_data *); +extern void __nfs4_read_done_cb(struct nfs_pgio_data *); extern struct nfs_client *nfs4_init_client(struct nfs_client *clp, const struct rpc_timeout *timeparms, const char *ip_addr); diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c index d873241a9b3..d235369c3df 100644 --- a/fs/nfs/nfs3proc.c +++ b/fs/nfs/nfs3proc.c @@ -795,7 +795,7 @@ nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, return status; } -static int nfs3_read_done(struct rpc_task *task, struct nfs_read_data *data) +static int nfs3_read_done(struct rpc_task *task, struct nfs_pgio_data *data) { struct inode *inode = data->header->inode; @@ -807,18 +807,18 @@ static int nfs3_read_done(struct rpc_task *task, struct nfs_read_data *data) return 0; } -static void nfs3_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) +static void nfs3_proc_read_setup(struct nfs_pgio_data *data, struct rpc_message *msg) { msg->rpc_proc = &nfs3_procedures[NFS3PROC_READ]; } -static int nfs3_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) +static int nfs3_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_pgio_data *data) { rpc_call_start(task); return 0; } -static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data) +static int nfs3_write_done(struct rpc_task *task, struct nfs_pgio_data *data) { struct inode *inode = data->header->inode; @@ -829,12 +829,12 @@ static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data) return 0; } -static void nfs3_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) +static void nfs3_proc_write_setup(struct nfs_pgio_data *data, struct rpc_message *msg) { msg->rpc_proc = &nfs3_procedures[NFS3PROC_WRITE]; } -static int nfs3_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) +static int nfs3_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_pgio_data *data) { rpc_call_start(task); return 0; diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index e1d1badbe53..f63cb87cd73 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -337,7 +337,7 @@ nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_mode, */ static inline void nfs4_state_protect_write(struct nfs_client *clp, struct rpc_clnt **clntp, - struct rpc_message *msg, struct nfs_write_data *wdata) + struct rpc_message *msg, struct nfs_pgio_data *wdata) { if (_nfs4_state_protect(clp, NFS_SP4_MACH_CRED_WRITE, clntp, msg) && !test_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags)) @@ -369,7 +369,7 @@ nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_flags, static inline void nfs4_state_protect_write(struct nfs_client *clp, struct rpc_clnt **clntp, - struct rpc_message *msg, struct nfs_write_data *wdata) + struct rpc_message *msg, struct nfs_pgio_data *wdata) { } #endif /* CONFIG_NFS_V4_1 */ diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c index b9a35c05b60..e6936147ad9 100644 --- a/fs/nfs/nfs4filelayout.c +++ b/fs/nfs/nfs4filelayout.c @@ -84,7 +84,7 @@ filelayout_get_dserver_offset(struct pnfs_layout_segment *lseg, loff_t offset) BUG(); } -static void filelayout_reset_write(struct nfs_write_data *data) +static void filelayout_reset_write(struct nfs_pgio_data *data) { struct nfs_pgio_header *hdr = data->header; struct rpc_task *task = &data->task; @@ -105,7 +105,7 @@ static void filelayout_reset_write(struct nfs_write_data *data) } } -static void filelayout_reset_read(struct nfs_read_data *data) +static void filelayout_reset_read(struct nfs_pgio_data *data) { struct nfs_pgio_header *hdr = data->header; struct rpc_task *task = &data->task; @@ -243,7 +243,7 @@ wait_on_recovery: /* NFS_PROTO call done callback routines */ static int filelayout_read_done_cb(struct rpc_task *task, - struct nfs_read_data *data) + struct nfs_pgio_data *data) { struct nfs_pgio_header *hdr = data->header; int err; @@ -270,7 +270,7 @@ static int filelayout_read_done_cb(struct rpc_task *task, * rfc5661 is not clear about which credential should be used. */ static void -filelayout_set_layoutcommit(struct nfs_write_data *wdata) +filelayout_set_layoutcommit(struct nfs_pgio_data *wdata) { struct nfs_pgio_header *hdr = wdata->header; @@ -305,7 +305,7 @@ filelayout_reset_to_mds(struct pnfs_layout_segment *lseg) */ static void filelayout_read_prepare(struct rpc_task *task, void *data) { - struct nfs_read_data *rdata = data; + struct nfs_pgio_data *rdata = data; if (unlikely(test_bit(NFS_CONTEXT_BAD, &rdata->args.context->flags))) { rpc_exit(task, -EIO); @@ -317,7 +317,7 @@ static void filelayout_read_prepare(struct rpc_task *task, void *data) rpc_exit(task, 0); return; } - rdata->read_done_cb = filelayout_read_done_cb; + rdata->pgio_done_cb = filelayout_read_done_cb; if (nfs41_setup_sequence(rdata->ds_clp->cl_session, &rdata->args.seq_args, @@ -331,7 +331,7 @@ static void filelayout_read_prepare(struct rpc_task *task, void *data) static void filelayout_read_call_done(struct rpc_task *task, void *data) { - struct nfs_read_data *rdata = data; + struct nfs_pgio_data *rdata = data; dprintk("--> %s task->tk_status %d\n", __func__, task->tk_status); @@ -347,14 +347,14 @@ static void filelayout_read_call_done(struct rpc_task *task, void *data) static void filelayout_read_count_stats(struct rpc_task *task, void *data) { - struct nfs_read_data *rdata = data; + struct nfs_pgio_data *rdata = data; rpc_count_iostats(task, NFS_SERVER(rdata->header->inode)->client->cl_metrics); } static void filelayout_read_release(void *data) { - struct nfs_read_data *rdata = data; + struct nfs_pgio_data *rdata = data; struct pnfs_layout_hdr *lo = rdata->header->lseg->pls_layout; filelayout_fenceme(lo->plh_inode, lo); @@ -363,7 +363,7 @@ static void filelayout_read_release(void *data) } static int filelayout_write_done_cb(struct rpc_task *task, - struct nfs_write_data *data) + struct nfs_pgio_data *data) { struct nfs_pgio_header *hdr = data->header; int err; @@ -419,7 +419,7 @@ static int filelayout_commit_done_cb(struct rpc_task *task, static void filelayout_write_prepare(struct rpc_task *task, void *data) { - struct nfs_write_data *wdata = data; + struct nfs_pgio_data *wdata = data; if (unlikely(test_bit(NFS_CONTEXT_BAD, &wdata->args.context->flags))) { rpc_exit(task, -EIO); @@ -443,7 +443,7 @@ static void filelayout_write_prepare(struct rpc_task *task, void *data) static void filelayout_write_call_done(struct rpc_task *task, void *data) { - struct nfs_write_data *wdata = data; + struct nfs_pgio_data *wdata = data; if (test_bit(NFS_IOHDR_REDO, &wdata->header->flags) && task->tk_status == 0) { @@ -457,14 +457,14 @@ static void filelayout_write_call_done(struct rpc_task *task, void *data) static void filelayout_write_count_stats(struct rpc_task *task, void *data) { - struct nfs_write_data *wdata = data; + struct nfs_pgio_data *wdata = data; rpc_count_iostats(task, NFS_SERVER(wdata->header->inode)->client->cl_metrics); } static void filelayout_write_release(void *data) { - struct nfs_write_data *wdata = data; + struct nfs_pgio_data *wdata = data; struct pnfs_layout_hdr *lo = wdata->header->lseg->pls_layout; filelayout_fenceme(lo->plh_inode, lo); @@ -529,7 +529,7 @@ static const struct rpc_call_ops filelayout_commit_call_ops = { }; static enum pnfs_try_status -filelayout_read_pagelist(struct nfs_read_data *data) +filelayout_read_pagelist(struct nfs_pgio_data *data) { struct nfs_pgio_header *hdr = data->header; struct pnfs_layout_segment *lseg = hdr->lseg; @@ -575,7 +575,7 @@ filelayout_read_pagelist(struct nfs_read_data *data) /* Perform async writes. */ static enum pnfs_try_status -filelayout_write_pagelist(struct nfs_write_data *data, int sync) +filelayout_write_pagelist(struct nfs_pgio_data *data, int sync) { struct nfs_pgio_header *hdr = data->header; struct pnfs_layout_segment *lseg = hdr->lseg; @@ -600,7 +600,7 @@ filelayout_write_pagelist(struct nfs_write_data *data, int sync) __func__, hdr->inode->i_ino, sync, (size_t) data->args.count, offset, ds->ds_remotestr, atomic_read(&ds->ds_clp->cl_count)); - data->write_done_cb = filelayout_write_done_cb; + data->pgio_done_cb = filelayout_write_done_cb; atomic_inc(&ds->ds_clp->cl_count); data->ds_clp = ds->ds_clp; fh = nfs4_fl_select_ds_fh(lseg, j); diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 4794ca69336..e793aa91454 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -4033,12 +4033,12 @@ static bool nfs4_error_stateid_expired(int err) return false; } -void __nfs4_read_done_cb(struct nfs_read_data *data) +void __nfs4_read_done_cb(struct nfs_pgio_data *data) { nfs_invalidate_atime(data->header->inode); } -static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) +static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_pgio_data *data) { struct nfs_server *server = NFS_SERVER(data->header->inode); @@ -4068,7 +4068,7 @@ static bool nfs4_read_stateid_changed(struct rpc_task *task, return true; } -static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) +static int nfs4_read_done(struct rpc_task *task, struct nfs_pgio_data *data) { dprintk("--> %s\n", __func__); @@ -4077,19 +4077,19 @@ static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) return -EAGAIN; if (nfs4_read_stateid_changed(task, &data->args)) return -EAGAIN; - return data->read_done_cb ? data->read_done_cb(task, data) : + return data->pgio_done_cb ? data->pgio_done_cb(task, data) : nfs4_read_done_cb(task, data); } -static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) +static void nfs4_proc_read_setup(struct nfs_pgio_data *data, struct rpc_message *msg) { data->timestamp = jiffies; - data->read_done_cb = nfs4_read_done_cb; + data->pgio_done_cb = nfs4_read_done_cb; msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); } -static int nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) +static int nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_pgio_data *data) { if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), &data->args.seq_args, @@ -4104,7 +4104,7 @@ static int nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_dat return 0; } -static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) +static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_pgio_data *data) { struct inode *inode = data->header->inode; @@ -4134,18 +4134,18 @@ static bool nfs4_write_stateid_changed(struct rpc_task *task, return true; } -static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) +static int nfs4_write_done(struct rpc_task *task, struct nfs_pgio_data *data) { if (!nfs4_sequence_done(task, &data->res.seq_res)) return -EAGAIN; if (nfs4_write_stateid_changed(task, &data->args)) return -EAGAIN; - return data->write_done_cb ? data->write_done_cb(task, data) : + return data->pgio_done_cb ? data->pgio_done_cb(task, data) : nfs4_write_done_cb(task, data); } static -bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) +bool nfs4_write_need_cache_consistency_data(const struct nfs_pgio_data *data) { const struct nfs_pgio_header *hdr = data->header; @@ -4158,7 +4158,7 @@ bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; } -static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) +static void nfs4_proc_write_setup(struct nfs_pgio_data *data, struct rpc_message *msg) { struct nfs_server *server = NFS_SERVER(data->header->inode); @@ -4168,8 +4168,8 @@ static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_messag } else data->args.bitmask = server->cache_consistency_bitmask; - if (!data->write_done_cb) - data->write_done_cb = nfs4_write_done_cb; + if (!data->pgio_done_cb) + data->pgio_done_cb = nfs4_write_done_cb; data->res.server = server; data->timestamp = jiffies; @@ -4177,7 +4177,7 @@ static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_messag nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); } -static int nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) +static int nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_pgio_data *data) { if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), &data->args.seq_args, diff --git a/fs/nfs/nfs4trace.h b/fs/nfs/nfs4trace.h index 849cf146db3..0a744f3a86f 100644 --- a/fs/nfs/nfs4trace.h +++ b/fs/nfs/nfs4trace.h @@ -932,7 +932,7 @@ DEFINE_NFS4_IDMAP_EVENT(nfs4_map_gid_to_group); DECLARE_EVENT_CLASS(nfs4_read_event, TP_PROTO( - const struct nfs_read_data *data, + const struct nfs_pgio_data *data, int error ), @@ -972,7 +972,7 @@ DECLARE_EVENT_CLASS(nfs4_read_event, #define DEFINE_NFS4_READ_EVENT(name) \ DEFINE_EVENT(nfs4_read_event, name, \ TP_PROTO( \ - const struct nfs_read_data *data, \ + const struct nfs_pgio_data *data, \ int error \ ), \ TP_ARGS(data, error)) @@ -983,7 +983,7 @@ DEFINE_NFS4_READ_EVENT(nfs4_pnfs_read); DECLARE_EVENT_CLASS(nfs4_write_event, TP_PROTO( - const struct nfs_write_data *data, + const struct nfs_pgio_data *data, int error ), @@ -1024,7 +1024,7 @@ DECLARE_EVENT_CLASS(nfs4_write_event, #define DEFINE_NFS4_WRITE_EVENT(name) \ DEFINE_EVENT(nfs4_write_event, name, \ TP_PROTO( \ - const struct nfs_write_data *data, \ + const struct nfs_pgio_data *data, \ int error \ ), \ TP_ARGS(data, error)) diff --git a/fs/nfs/objlayout/objio_osd.c b/fs/nfs/objlayout/objio_osd.c index 5457745dd4f..426b366b0b3 100644 --- a/fs/nfs/objlayout/objio_osd.c +++ b/fs/nfs/objlayout/objio_osd.c @@ -439,7 +439,7 @@ static void _read_done(struct ore_io_state *ios, void *private) objlayout_read_done(&objios->oir, status, objios->sync); } -int objio_read_pagelist(struct nfs_read_data *rdata) +int objio_read_pagelist(struct nfs_pgio_data *rdata) { struct nfs_pgio_header *hdr = rdata->header; struct objio_state *objios; @@ -487,7 +487,7 @@ static void _write_done(struct ore_io_state *ios, void *private) static struct page *__r4w_get_page(void *priv, u64 offset, bool *uptodate) { struct objio_state *objios = priv; - struct nfs_write_data *wdata = objios->oir.rpcdata; + struct nfs_pgio_data *wdata = objios->oir.rpcdata; struct address_space *mapping = wdata->header->inode->i_mapping; pgoff_t index = offset / PAGE_SIZE; struct page *page; @@ -531,7 +531,7 @@ static const struct _ore_r4w_op _r4w_op = { .put_page = &__r4w_put_page, }; -int objio_write_pagelist(struct nfs_write_data *wdata, int how) +int objio_write_pagelist(struct nfs_pgio_data *wdata, int how) { struct nfs_pgio_header *hdr = wdata->header; struct objio_state *objios; diff --git a/fs/nfs/objlayout/objlayout.c b/fs/nfs/objlayout/objlayout.c index e4f9cbfec67..2f955f67100 100644 --- a/fs/nfs/objlayout/objlayout.c +++ b/fs/nfs/objlayout/objlayout.c @@ -229,11 +229,11 @@ objlayout_io_set_result(struct objlayout_io_res *oir, unsigned index, static void _rpc_read_complete(struct work_struct *work) { struct rpc_task *task; - struct nfs_read_data *rdata; + struct nfs_pgio_data *rdata; dprintk("%s enter\n", __func__); task = container_of(work, struct rpc_task, u.tk_work); - rdata = container_of(task, struct nfs_read_data, task); + rdata = container_of(task, struct nfs_pgio_data, task); pnfs_ld_read_done(rdata); } @@ -241,7 +241,7 @@ static void _rpc_read_complete(struct work_struct *work) void objlayout_read_done(struct objlayout_io_res *oir, ssize_t status, bool sync) { - struct nfs_read_data *rdata = oir->rpcdata; + struct nfs_pgio_data *rdata = oir->rpcdata; oir->status = rdata->task.tk_status = status; if (status >= 0) @@ -266,7 +266,7 @@ objlayout_read_done(struct objlayout_io_res *oir, ssize_t status, bool sync) * Perform sync or async reads. */ enum pnfs_try_status -objlayout_read_pagelist(struct nfs_read_data *rdata) +objlayout_read_pagelist(struct nfs_pgio_data *rdata) { struct nfs_pgio_header *hdr = rdata->header; struct inode *inode = hdr->inode; @@ -312,11 +312,11 @@ objlayout_read_pagelist(struct nfs_read_data *rdata) static void _rpc_write_complete(struct work_struct *work) { struct rpc_task *task; - struct nfs_write_data *wdata; + struct nfs_pgio_data *wdata; dprintk("%s enter\n", __func__); task = container_of(work, struct rpc_task, u.tk_work); - wdata = container_of(task, struct nfs_write_data, task); + wdata = container_of(task, struct nfs_pgio_data, task); pnfs_ld_write_done(wdata); } @@ -324,7 +324,7 @@ static void _rpc_write_complete(struct work_struct *work) void objlayout_write_done(struct objlayout_io_res *oir, ssize_t status, bool sync) { - struct nfs_write_data *wdata = oir->rpcdata; + struct nfs_pgio_data *wdata = oir->rpcdata; oir->status = wdata->task.tk_status = status; if (status >= 0) { @@ -351,7 +351,7 @@ objlayout_write_done(struct objlayout_io_res *oir, ssize_t status, bool sync) * Perform sync or async writes. */ enum pnfs_try_status -objlayout_write_pagelist(struct nfs_write_data *wdata, +objlayout_write_pagelist(struct nfs_pgio_data *wdata, int how) { struct nfs_pgio_header *hdr = wdata->header; diff --git a/fs/nfs/objlayout/objlayout.h b/fs/nfs/objlayout/objlayout.h index 87aa1dec612..01e041029a6 100644 --- a/fs/nfs/objlayout/objlayout.h +++ b/fs/nfs/objlayout/objlayout.h @@ -119,8 +119,8 @@ extern void objio_free_lseg(struct pnfs_layout_segment *lseg); */ extern void objio_free_result(struct objlayout_io_res *oir); -extern int objio_read_pagelist(struct nfs_read_data *rdata); -extern int objio_write_pagelist(struct nfs_write_data *wdata, int how); +extern int objio_read_pagelist(struct nfs_pgio_data *rdata); +extern int objio_write_pagelist(struct nfs_pgio_data *wdata, int how); /* * callback API @@ -168,10 +168,10 @@ extern struct pnfs_layout_segment *objlayout_alloc_lseg( extern void objlayout_free_lseg(struct pnfs_layout_segment *); extern enum pnfs_try_status objlayout_read_pagelist( - struct nfs_read_data *); + struct nfs_pgio_data *); extern enum pnfs_try_status objlayout_write_pagelist( - struct nfs_write_data *, + struct nfs_pgio_data *, int how); extern void objlayout_encode_layoutcommit( diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 3d5bc2baafd..e9cea3ab7cf 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1492,7 +1492,7 @@ int pnfs_write_done_resend_to_mds(struct inode *inode, } EXPORT_SYMBOL_GPL(pnfs_write_done_resend_to_mds); -static void pnfs_ld_handle_write_error(struct nfs_write_data *data) +static void pnfs_ld_handle_write_error(struct nfs_pgio_data *data) { struct nfs_pgio_header *hdr = data->header; @@ -1511,7 +1511,7 @@ static void pnfs_ld_handle_write_error(struct nfs_write_data *data) /* * Called by non rpc-based layout drivers */ -void pnfs_ld_write_done(struct nfs_write_data *data) +void pnfs_ld_write_done(struct nfs_pgio_data *data) { struct nfs_pgio_header *hdr = data->header; @@ -1527,7 +1527,7 @@ EXPORT_SYMBOL_GPL(pnfs_ld_write_done); static void pnfs_write_through_mds(struct nfs_pageio_descriptor *desc, - struct nfs_write_data *data) + struct nfs_pgio_data *data) { struct nfs_pgio_header *hdr = data->header; @@ -1540,7 +1540,7 @@ pnfs_write_through_mds(struct nfs_pageio_descriptor *desc, } static enum pnfs_try_status -pnfs_try_to_write_data(struct nfs_write_data *wdata, +pnfs_try_to_write_data(struct nfs_pgio_data *wdata, const struct rpc_call_ops *call_ops, struct pnfs_layout_segment *lseg, int how) @@ -1564,7 +1564,7 @@ pnfs_try_to_write_data(struct nfs_write_data *wdata, static void pnfs_do_multiple_writes(struct nfs_pageio_descriptor *desc, struct list_head *head, int how) { - struct nfs_write_data *data; + struct nfs_pgio_data *data; const struct rpc_call_ops *call_ops = desc->pg_rpc_callops; struct pnfs_layout_segment *lseg = desc->pg_lseg; @@ -1572,7 +1572,7 @@ pnfs_do_multiple_writes(struct nfs_pageio_descriptor *desc, struct list_head *he while (!list_empty(head)) { enum pnfs_try_status trypnfs; - data = list_first_entry(head, struct nfs_write_data, list); + data = list_first_entry(head, struct nfs_pgio_data, list); list_del_init(&data->list); trypnfs = pnfs_try_to_write_data(data, call_ops, lseg, how); @@ -1647,7 +1647,7 @@ int pnfs_read_done_resend_to_mds(struct inode *inode, } EXPORT_SYMBOL_GPL(pnfs_read_done_resend_to_mds); -static void pnfs_ld_handle_read_error(struct nfs_read_data *data) +static void pnfs_ld_handle_read_error(struct nfs_pgio_data *data) { struct nfs_pgio_header *hdr = data->header; @@ -1666,7 +1666,7 @@ static void pnfs_ld_handle_read_error(struct nfs_read_data *data) /* * Called by non rpc-based layout drivers */ -void pnfs_ld_read_done(struct nfs_read_data *data) +void pnfs_ld_read_done(struct nfs_pgio_data *data) { struct nfs_pgio_header *hdr = data->header; @@ -1682,7 +1682,7 @@ EXPORT_SYMBOL_GPL(pnfs_ld_read_done); static void pnfs_read_through_mds(struct nfs_pageio_descriptor *desc, - struct nfs_read_data *data) + struct nfs_pgio_data *data) { struct nfs_pgio_header *hdr = data->header; @@ -1698,7 +1698,7 @@ pnfs_read_through_mds(struct nfs_pageio_descriptor *desc, * Call the appropriate parallel I/O subsystem read function. */ static enum pnfs_try_status -pnfs_try_to_read_data(struct nfs_read_data *rdata, +pnfs_try_to_read_data(struct nfs_pgio_data *rdata, const struct rpc_call_ops *call_ops, struct pnfs_layout_segment *lseg) { @@ -1722,7 +1722,7 @@ pnfs_try_to_read_data(struct nfs_read_data *rdata, static void pnfs_do_multiple_reads(struct nfs_pageio_descriptor *desc, struct list_head *head) { - struct nfs_read_data *data; + struct nfs_pgio_data *data; const struct rpc_call_ops *call_ops = desc->pg_rpc_callops; struct pnfs_layout_segment *lseg = desc->pg_lseg; @@ -1730,7 +1730,7 @@ pnfs_do_multiple_reads(struct nfs_pageio_descriptor *desc, struct list_head *hea while (!list_empty(head)) { enum pnfs_try_status trypnfs; - data = list_first_entry(head, struct nfs_read_data, list); + data = list_first_entry(head, struct nfs_pgio_data, list); list_del_init(&data->list); trypnfs = pnfs_try_to_read_data(data, call_ops, lseg); @@ -1821,7 +1821,7 @@ void pnfs_set_lo_fail(struct pnfs_layout_segment *lseg) EXPORT_SYMBOL_GPL(pnfs_set_lo_fail); void -pnfs_set_layoutcommit(struct nfs_write_data *wdata) +pnfs_set_layoutcommit(struct nfs_pgio_data *wdata) { struct nfs_pgio_header *hdr = wdata->header; struct inode *inode = hdr->inode; diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h index 94a9a1834b3..0031267d749 100644 --- a/fs/nfs/pnfs.h +++ b/fs/nfs/pnfs.h @@ -113,8 +113,8 @@ struct pnfs_layoutdriver_type { * Return PNFS_ATTEMPTED to indicate the layout code has attempted * I/O, else return PNFS_NOT_ATTEMPTED to fall back to normal NFS */ - enum pnfs_try_status (*read_pagelist) (struct nfs_read_data *nfs_data); - enum pnfs_try_status (*write_pagelist) (struct nfs_write_data *nfs_data, int how); + enum pnfs_try_status (*read_pagelist) (struct nfs_pgio_data *nfs_data); + enum pnfs_try_status (*write_pagelist) (struct nfs_pgio_data *nfs_data, int how); void (*free_deviceid_node) (struct nfs4_deviceid_node *); @@ -212,13 +212,13 @@ bool pnfs_roc(struct inode *ino); void pnfs_roc_release(struct inode *ino); void pnfs_roc_set_barrier(struct inode *ino, u32 barrier); bool pnfs_roc_drain(struct inode *ino, u32 *barrier, struct rpc_task *task); -void pnfs_set_layoutcommit(struct nfs_write_data *wdata); +void pnfs_set_layoutcommit(struct nfs_pgio_data *wdata); void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data); int pnfs_layoutcommit_inode(struct inode *inode, bool sync); int _pnfs_return_layout(struct inode *); int pnfs_commit_and_return_layout(struct inode *); -void pnfs_ld_write_done(struct nfs_write_data *); -void pnfs_ld_read_done(struct nfs_read_data *); +void pnfs_ld_write_done(struct nfs_pgio_data *); +void pnfs_ld_read_done(struct nfs_pgio_data *); struct pnfs_layout_segment *pnfs_update_layout(struct inode *ino, struct nfs_open_context *ctx, loff_t pos, diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c index 8cc227fcd4d..c54829eb215 100644 --- a/fs/nfs/proc.c +++ b/fs/nfs/proc.c @@ -578,7 +578,7 @@ nfs_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, return 0; } -static int nfs_read_done(struct rpc_task *task, struct nfs_read_data *data) +static int nfs_read_done(struct rpc_task *task, struct nfs_pgio_data *data) { struct inode *inode = data->header->inode; @@ -594,18 +594,18 @@ static int nfs_read_done(struct rpc_task *task, struct nfs_read_data *data) return 0; } -static void nfs_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) +static void nfs_proc_read_setup(struct nfs_pgio_data *data, struct rpc_message *msg) { msg->rpc_proc = &nfs_procedures[NFSPROC_READ]; } -static int nfs_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) +static int nfs_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_pgio_data *data) { rpc_call_start(task); return 0; } -static int nfs_write_done(struct rpc_task *task, struct nfs_write_data *data) +static int nfs_write_done(struct rpc_task *task, struct nfs_pgio_data *data) { struct inode *inode = data->header->inode; @@ -614,14 +614,14 @@ static int nfs_write_done(struct rpc_task *task, struct nfs_write_data *data) return 0; } -static void nfs_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) +static void nfs_proc_write_setup(struct nfs_pgio_data *data, struct rpc_message *msg) { /* Note: NFSv2 ignores @stable and always uses NFS_FILE_SYNC */ data->args.stable = NFS_FILE_SYNC; msg->rpc_proc = &nfs_procedures[NFSPROC_WRITE]; } -static int nfs_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) +static int nfs_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_pgio_data *data) { rpc_call_start(task); return 0; diff --git a/fs/nfs/read.c b/fs/nfs/read.c index 473bba35a2c..9e426cc179e 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -51,10 +51,10 @@ struct nfs_read_header *nfs_readhdr_alloc(void) } EXPORT_SYMBOL_GPL(nfs_readhdr_alloc); -static struct nfs_read_data *nfs_readdata_alloc(struct nfs_pgio_header *hdr, +static struct nfs_pgio_data *nfs_readdata_alloc(struct nfs_pgio_header *hdr, unsigned int pagecount) { - struct nfs_read_data *data, *prealloc; + struct nfs_pgio_data *data, *prealloc; prealloc = &container_of(hdr, struct nfs_read_header, header)->rpc_data; if (prealloc->header == NULL) @@ -84,7 +84,7 @@ void nfs_readhdr_free(struct nfs_pgio_header *hdr) } EXPORT_SYMBOL_GPL(nfs_readhdr_free); -void nfs_readdata_release(struct nfs_read_data *rdata) +void nfs_readdata_release(struct nfs_pgio_data *rdata) { struct nfs_pgio_header *hdr = rdata->header; struct nfs_read_header *read_header = container_of(hdr, struct nfs_read_header, header); @@ -212,7 +212,7 @@ out: } int nfs_initiate_read(struct rpc_clnt *clnt, - struct nfs_read_data *data, + struct nfs_pgio_data *data, const struct rpc_call_ops *call_ops, int flags) { struct inode *inode = data->header->inode; @@ -255,7 +255,7 @@ EXPORT_SYMBOL_GPL(nfs_initiate_read); /* * Set up the NFS read request struct */ -static void nfs_read_rpcsetup(struct nfs_read_data *data, +static void nfs_read_rpcsetup(struct nfs_pgio_data *data, unsigned int count, unsigned int offset) { struct nfs_page *req = data->header->req; @@ -274,7 +274,7 @@ static void nfs_read_rpcsetup(struct nfs_read_data *data, nfs_fattr_init(&data->fattr); } -static int nfs_do_read(struct nfs_read_data *data, +static int nfs_do_read(struct nfs_pgio_data *data, const struct rpc_call_ops *call_ops) { struct inode *inode = data->header->inode; @@ -286,13 +286,13 @@ static int nfs_do_multiple_reads(struct list_head *head, const struct rpc_call_ops *call_ops) { - struct nfs_read_data *data; + struct nfs_pgio_data *data; int ret = 0; while (!list_empty(head)) { int ret2; - data = list_first_entry(head, struct nfs_read_data, list); + data = list_first_entry(head, struct nfs_pgio_data, list); list_del_init(&data->list); ret2 = nfs_do_read(data, call_ops); @@ -324,8 +324,8 @@ static void nfs_pagein_error(struct nfs_pageio_descriptor *desc, { set_bit(NFS_IOHDR_REDO, &hdr->flags); while (!list_empty(&hdr->rpc_list)) { - struct nfs_read_data *data = list_first_entry(&hdr->rpc_list, - struct nfs_read_data, list); + struct nfs_pgio_data *data = list_first_entry(&hdr->rpc_list, + struct nfs_pgio_data, list); list_del(&data->list); nfs_readdata_release(data); } @@ -350,7 +350,7 @@ static int nfs_pagein_multi(struct nfs_pageio_descriptor *desc, { struct nfs_page *req = hdr->req; struct page *page = req->wb_page; - struct nfs_read_data *data; + struct nfs_pgio_data *data; size_t rsize = desc->pg_bsize, nbytes; unsigned int offset; @@ -382,7 +382,7 @@ static int nfs_pagein_one(struct nfs_pageio_descriptor *desc, { struct nfs_page *req; struct page **pages; - struct nfs_read_data *data; + struct nfs_pgio_data *data; struct list_head *head = &desc->pg_list; data = nfs_readdata_alloc(hdr, nfs_page_array_len(desc->pg_base, @@ -447,7 +447,7 @@ static const struct nfs_pageio_ops nfs_pageio_read_ops = { * This is the callback from RPC telling us whether a reply was * received or some error occurred (timeout or socket shutdown). */ -int nfs_readpage_result(struct rpc_task *task, struct nfs_read_data *data) +int nfs_readpage_result(struct rpc_task *task, struct nfs_pgio_data *data) { struct inode *inode = data->header->inode; int status; @@ -468,7 +468,7 @@ int nfs_readpage_result(struct rpc_task *task, struct nfs_read_data *data) return 0; } -static void nfs_readpage_retry(struct rpc_task *task, struct nfs_read_data *data) +static void nfs_readpage_retry(struct rpc_task *task, struct nfs_pgio_data *data) { struct nfs_pgio_args *argp = &data->args; struct nfs_pgio_res *resp = &data->res; @@ -490,7 +490,7 @@ static void nfs_readpage_retry(struct rpc_task *task, struct nfs_read_data *data static void nfs_readpage_result_common(struct rpc_task *task, void *calldata) { - struct nfs_read_data *data = calldata; + struct nfs_pgio_data *data = calldata; struct nfs_pgio_header *hdr = data->header; /* Note the only returns of nfs_readpage_result are 0 and -EAGAIN */ @@ -520,7 +520,7 @@ static void nfs_readpage_release_common(void *calldata) void nfs_read_prepare(struct rpc_task *task, void *calldata) { - struct nfs_read_data *data = calldata; + struct nfs_pgio_data *data = calldata; int err; err = NFS_PROTO(data->header->inode)->read_rpc_prepare(task, data); if (err) diff --git a/fs/nfs/write.c b/fs/nfs/write.c index d392a70092f..3a2fc5c4c79 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -88,10 +88,10 @@ struct nfs_write_header *nfs_writehdr_alloc(void) } EXPORT_SYMBOL_GPL(nfs_writehdr_alloc); -static struct nfs_write_data *nfs_writedata_alloc(struct nfs_pgio_header *hdr, +static struct nfs_pgio_data *nfs_writedata_alloc(struct nfs_pgio_header *hdr, unsigned int pagecount) { - struct nfs_write_data *data, *prealloc; + struct nfs_pgio_data *data, *prealloc; prealloc = &container_of(hdr, struct nfs_write_header, header)->rpc_data; if (prealloc->header == NULL) @@ -120,7 +120,7 @@ void nfs_writehdr_free(struct nfs_pgio_header *hdr) } EXPORT_SYMBOL_GPL(nfs_writehdr_free); -void nfs_writedata_release(struct nfs_write_data *wdata) +void nfs_writedata_release(struct nfs_pgio_data *wdata) { struct nfs_pgio_header *hdr = wdata->header; struct nfs_write_header *write_header = container_of(hdr, struct nfs_write_header, header); @@ -582,7 +582,7 @@ nfs_clear_request_commit(struct nfs_page *req) } static inline -int nfs_write_need_commit(struct nfs_write_data *data) +int nfs_write_need_commit(struct nfs_pgio_data *data) { if (data->verf.committed == NFS_DATA_SYNC) return data->header->lseg == NULL; @@ -613,7 +613,7 @@ nfs_clear_request_commit(struct nfs_page *req) } static inline -int nfs_write_need_commit(struct nfs_write_data *data) +int nfs_write_need_commit(struct nfs_pgio_data *data) { return 0; } @@ -990,7 +990,7 @@ static int flush_task_priority(int how) } int nfs_initiate_write(struct rpc_clnt *clnt, - struct nfs_write_data *data, + struct nfs_pgio_data *data, const struct rpc_call_ops *call_ops, int how, int flags) { @@ -1047,7 +1047,7 @@ EXPORT_SYMBOL_GPL(nfs_initiate_write); /* * Set up the argument/result storage required for the RPC call. */ -static void nfs_write_rpcsetup(struct nfs_write_data *data, +static void nfs_write_rpcsetup(struct nfs_pgio_data *data, unsigned int count, unsigned int offset, int how, struct nfs_commit_info *cinfo) { @@ -1082,7 +1082,7 @@ static void nfs_write_rpcsetup(struct nfs_write_data *data, nfs_fattr_init(&data->fattr); } -static int nfs_do_write(struct nfs_write_data *data, +static int nfs_do_write(struct nfs_pgio_data *data, const struct rpc_call_ops *call_ops, int how) { @@ -1095,13 +1095,13 @@ static int nfs_do_multiple_writes(struct list_head *head, const struct rpc_call_ops *call_ops, int how) { - struct nfs_write_data *data; + struct nfs_pgio_data *data; int ret = 0; while (!list_empty(head)) { int ret2; - data = list_first_entry(head, struct nfs_write_data, list); + data = list_first_entry(head, struct nfs_pgio_data, list); list_del_init(&data->list); ret2 = nfs_do_write(data, call_ops, how); @@ -1144,8 +1144,8 @@ static void nfs_flush_error(struct nfs_pageio_descriptor *desc, { set_bit(NFS_IOHDR_REDO, &hdr->flags); while (!list_empty(&hdr->rpc_list)) { - struct nfs_write_data *data = list_first_entry(&hdr->rpc_list, - struct nfs_write_data, list); + struct nfs_pgio_data *data = list_first_entry(&hdr->rpc_list, + struct nfs_pgio_data, list); list_del(&data->list); nfs_writedata_release(data); } @@ -1161,7 +1161,7 @@ static int nfs_flush_multi(struct nfs_pageio_descriptor *desc, { struct nfs_page *req = hdr->req; struct page *page = req->wb_page; - struct nfs_write_data *data; + struct nfs_pgio_data *data; size_t wsize = desc->pg_bsize, nbytes; unsigned int offset; int requests = 0; @@ -1211,7 +1211,7 @@ static int nfs_flush_one(struct nfs_pageio_descriptor *desc, { struct nfs_page *req; struct page **pages; - struct nfs_write_data *data; + struct nfs_pgio_data *data; struct list_head *head = &desc->pg_list; struct nfs_commit_info cinfo; @@ -1305,7 +1305,7 @@ EXPORT_SYMBOL_GPL(nfs_pageio_reset_write_mds); void nfs_write_prepare(struct rpc_task *task, void *calldata) { - struct nfs_write_data *data = calldata; + struct nfs_pgio_data *data = calldata; int err; err = NFS_PROTO(data->header->inode)->write_rpc_prepare(task, data); if (err) @@ -1328,14 +1328,14 @@ void nfs_commit_prepare(struct rpc_task *task, void *calldata) */ static void nfs_writeback_done_common(struct rpc_task *task, void *calldata) { - struct nfs_write_data *data = calldata; + struct nfs_pgio_data *data = calldata; nfs_writeback_done(task, data); } static void nfs_writeback_release_common(void *calldata) { - struct nfs_write_data *data = calldata; + struct nfs_pgio_data *data = calldata; struct nfs_pgio_header *hdr = data->header; int status = data->task.tk_status; @@ -1386,7 +1386,7 @@ static int nfs_should_remove_suid(const struct inode *inode) /* * This function is called when the WRITE call is complete. */ -void nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data) +void nfs_writeback_done(struct rpc_task *task, struct nfs_pgio_data *data) { struct nfs_pgio_args *argp = &data->args; struct nfs_pgio_res *resp = &data->res; diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index fa6918b0f82..7e0db561d82 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -520,7 +520,7 @@ extern int nfs_writepage(struct page *page, struct writeback_control *wbc); extern int nfs_writepages(struct address_space *, struct writeback_control *); extern int nfs_flush_incompatible(struct file *file, struct page *page); extern int nfs_updatepage(struct file *, struct page *, unsigned int, unsigned int); -extern void nfs_writeback_done(struct rpc_task *, struct nfs_write_data *); +extern void nfs_writeback_done(struct rpc_task *, struct nfs_pgio_data *); /* * Try to write back everything synchronously (but check the @@ -553,7 +553,7 @@ nfs_have_writebacks(struct inode *inode) extern int nfs_readpage(struct file *, struct page *); extern int nfs_readpages(struct file *, struct address_space *, struct list_head *, unsigned); -extern int nfs_readpage_result(struct rpc_task *, struct nfs_read_data *); +extern int nfs_readpage_result(struct rpc_task *, struct nfs_pgio_data *); extern int nfs_readpage_async(struct nfs_open_context *, struct inode *, struct page *); diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 381f832b03c..64f6f1491c0 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1247,20 +1247,6 @@ struct nfs_page_array { struct page *page_array[NFS_PAGEVEC_SIZE]; }; -struct nfs_read_data { - struct nfs_pgio_header *header; - struct list_head list; - struct rpc_task task; - struct nfs_fattr fattr; /* fattr storage */ - struct nfs_pgio_args args; - struct nfs_pgio_res res; - unsigned long timestamp; /* For lease renewal */ - int (*read_done_cb) (struct rpc_task *task, struct nfs_read_data *data); - __u64 mds_offset; - struct nfs_page_array pages; - struct nfs_client *ds_clp; /* pNFS data server */ -}; - /* used as flag bits in nfs_pgio_header */ enum { NFS_IOHDR_ERROR = 0, @@ -1293,29 +1279,29 @@ struct nfs_pgio_header { unsigned long flags; }; -struct nfs_read_header { - struct nfs_pgio_header header; - struct nfs_read_data rpc_data; -}; - -struct nfs_write_data { +struct nfs_pgio_data { struct nfs_pgio_header *header; struct list_head list; struct rpc_task task; struct nfs_fattr fattr; - struct nfs_writeverf verf; + struct nfs_writeverf verf; /* Used for writes */ struct nfs_pgio_args args; /* argument struct */ struct nfs_pgio_res res; /* result struct */ unsigned long timestamp; /* For lease renewal */ - int (*write_done_cb) (struct rpc_task *task, struct nfs_write_data *data); + int (*pgio_done_cb) (struct rpc_task *task, struct nfs_pgio_data *data); __u64 mds_offset; /* Filelayout dense stripe */ struct nfs_page_array pages; struct nfs_client *ds_clp; /* pNFS data server */ }; +struct nfs_read_header { + struct nfs_pgio_header header; + struct nfs_pgio_data rpc_data; +}; + struct nfs_write_header { struct nfs_pgio_header header; - struct nfs_write_data rpc_data; + struct nfs_pgio_data rpc_data; struct nfs_writeverf verf; }; @@ -1448,12 +1434,12 @@ struct nfs_rpc_ops { struct nfs_pathconf *); int (*set_capabilities)(struct nfs_server *, struct nfs_fh *); int (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int); - void (*read_setup) (struct nfs_read_data *, struct rpc_message *); - int (*read_rpc_prepare)(struct rpc_task *, struct nfs_read_data *); - int (*read_done) (struct rpc_task *, struct nfs_read_data *); - void (*write_setup) (struct nfs_write_data *, struct rpc_message *); - int (*write_rpc_prepare)(struct rpc_task *, struct nfs_write_data *); - int (*write_done) (struct rpc_task *, struct nfs_write_data *); + void (*read_setup) (struct nfs_pgio_data *, struct rpc_message *); + int (*read_rpc_prepare)(struct rpc_task *, struct nfs_pgio_data *); + int (*read_done) (struct rpc_task *, struct nfs_pgio_data *); + void (*write_setup) (struct nfs_pgio_data *, struct rpc_message *); + int (*write_rpc_prepare)(struct rpc_task *, struct nfs_pgio_data *); + int (*write_done) (struct rpc_task *, struct nfs_pgio_data *); void (*commit_setup) (struct nfs_commit_data *, struct rpc_message *); void (*commit_rpc_prepare)(struct rpc_task *, struct nfs_commit_data *); int (*commit_done) (struct rpc_task *, struct nfs_commit_data *); -- cgit v1.2.3-70-g09d2 From c0752cdfbbb691cfe98812f7aed8ce1e766823c4 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Tue, 6 May 2014 09:12:27 -0400 Subject: NFS: Create a common read and write header struct The only difference is the write verifier field, but we can keep that for a little bit longer. Signed-off-by: Anna Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/internal.h | 4 ++-- fs/nfs/pnfs.c | 4 ++-- fs/nfs/read.c | 14 +++++++------- fs/nfs/write.c | 14 +++++++------- include/linux/nfs_xdr.h | 7 +------ 5 files changed, 19 insertions(+), 24 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index af01b80412d..b0e7a41d14a 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -395,7 +395,7 @@ extern int nfs4_get_rootfh(struct nfs_server *server, struct nfs_fh *mntfh, bool struct nfs_pgio_completion_ops; /* read.c */ -extern struct nfs_read_header *nfs_readhdr_alloc(void); +extern struct nfs_rw_header *nfs_readhdr_alloc(void); extern void nfs_readhdr_free(struct nfs_pgio_header *hdr); extern void nfs_pageio_init_read(struct nfs_pageio_descriptor *pgio, struct inode *inode, bool force_mds, @@ -424,7 +424,7 @@ int nfs_remount(struct super_block *sb, int *flags, char *raw_data); extern void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, struct inode *inode, int ioflags, bool force_mds, const struct nfs_pgio_completion_ops *compl_ops); -extern struct nfs_write_header *nfs_writehdr_alloc(void); +extern struct nfs_rw_header *nfs_writehdr_alloc(void); extern void nfs_writehdr_free(struct nfs_pgio_header *hdr); extern int nfs_generic_flush(struct nfs_pageio_descriptor *desc, struct nfs_pgio_header *hdr); diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index e9cea3ab7cf..43cfe11aa1a 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1592,7 +1592,7 @@ EXPORT_SYMBOL_GPL(pnfs_writehdr_free); int pnfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc) { - struct nfs_write_header *whdr; + struct nfs_rw_header *whdr; struct nfs_pgio_header *hdr; int ret; @@ -1750,7 +1750,7 @@ EXPORT_SYMBOL_GPL(pnfs_readhdr_free); int pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc) { - struct nfs_read_header *rhdr; + struct nfs_rw_header *rhdr; struct nfs_pgio_header *hdr; int ret; diff --git a/fs/nfs/read.c b/fs/nfs/read.c index 9e426cc179e..d29ca367369 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -34,9 +34,9 @@ static const struct nfs_pgio_completion_ops nfs_async_read_completion_ops; static struct kmem_cache *nfs_rdata_cachep; -struct nfs_read_header *nfs_readhdr_alloc(void) +struct nfs_rw_header *nfs_readhdr_alloc(void) { - struct nfs_read_header *rhdr; + struct nfs_rw_header *rhdr; rhdr = kmem_cache_zalloc(nfs_rdata_cachep, GFP_KERNEL); if (rhdr) { @@ -56,7 +56,7 @@ static struct nfs_pgio_data *nfs_readdata_alloc(struct nfs_pgio_header *hdr, { struct nfs_pgio_data *data, *prealloc; - prealloc = &container_of(hdr, struct nfs_read_header, header)->rpc_data; + prealloc = &container_of(hdr, struct nfs_rw_header, header)->rpc_data; if (prealloc->header == NULL) data = prealloc; else @@ -78,7 +78,7 @@ out: void nfs_readhdr_free(struct nfs_pgio_header *hdr) { - struct nfs_read_header *rhdr = container_of(hdr, struct nfs_read_header, header); + struct nfs_rw_header *rhdr = container_of(hdr, struct nfs_rw_header, header); kmem_cache_free(nfs_rdata_cachep, rhdr); } @@ -87,7 +87,7 @@ EXPORT_SYMBOL_GPL(nfs_readhdr_free); void nfs_readdata_release(struct nfs_pgio_data *rdata) { struct nfs_pgio_header *hdr = rdata->header; - struct nfs_read_header *read_header = container_of(hdr, struct nfs_read_header, header); + struct nfs_rw_header *read_header = container_of(hdr, struct nfs_rw_header, header); put_nfs_open_context(rdata->args.context); if (rdata->pages.pagevec != rdata->pages.page_array) @@ -417,7 +417,7 @@ EXPORT_SYMBOL_GPL(nfs_generic_pagein); static int nfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc) { - struct nfs_read_header *rhdr; + struct nfs_rw_header *rhdr; struct nfs_pgio_header *hdr; int ret; @@ -680,7 +680,7 @@ out: int __init nfs_init_readpagecache(void) { nfs_rdata_cachep = kmem_cache_create("nfs_read_data", - sizeof(struct nfs_read_header), + sizeof(struct nfs_rw_header), 0, SLAB_HWCACHE_ALIGN, NULL); if (nfs_rdata_cachep == NULL) diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 3a2fc5c4c79..37c4c988519 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -70,9 +70,9 @@ void nfs_commit_free(struct nfs_commit_data *p) } EXPORT_SYMBOL_GPL(nfs_commit_free); -struct nfs_write_header *nfs_writehdr_alloc(void) +struct nfs_rw_header *nfs_writehdr_alloc(void) { - struct nfs_write_header *p = mempool_alloc(nfs_wdata_mempool, GFP_NOIO); + struct nfs_rw_header *p = mempool_alloc(nfs_wdata_mempool, GFP_NOIO); if (p) { struct nfs_pgio_header *hdr = &p->header; @@ -93,7 +93,7 @@ static struct nfs_pgio_data *nfs_writedata_alloc(struct nfs_pgio_header *hdr, { struct nfs_pgio_data *data, *prealloc; - prealloc = &container_of(hdr, struct nfs_write_header, header)->rpc_data; + prealloc = &container_of(hdr, struct nfs_rw_header, header)->rpc_data; if (prealloc->header == NULL) data = prealloc; else @@ -115,7 +115,7 @@ out: void nfs_writehdr_free(struct nfs_pgio_header *hdr) { - struct nfs_write_header *whdr = container_of(hdr, struct nfs_write_header, header); + struct nfs_rw_header *whdr = container_of(hdr, struct nfs_rw_header, header); mempool_free(whdr, nfs_wdata_mempool); } EXPORT_SYMBOL_GPL(nfs_writehdr_free); @@ -123,7 +123,7 @@ EXPORT_SYMBOL_GPL(nfs_writehdr_free); void nfs_writedata_release(struct nfs_pgio_data *wdata) { struct nfs_pgio_header *hdr = wdata->header; - struct nfs_write_header *write_header = container_of(hdr, struct nfs_write_header, header); + struct nfs_rw_header *write_header = container_of(hdr, struct nfs_rw_header, header); put_nfs_open_context(wdata->args.context); if (wdata->pages.pagevec != wdata->pages.page_array) @@ -1253,7 +1253,7 @@ EXPORT_SYMBOL_GPL(nfs_generic_flush); static int nfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc) { - struct nfs_write_header *whdr; + struct nfs_rw_header *whdr; struct nfs_pgio_header *hdr; int ret; @@ -1910,7 +1910,7 @@ int nfs_migrate_page(struct address_space *mapping, struct page *newpage, int __init nfs_init_writepagecache(void) { nfs_wdata_cachep = kmem_cache_create("nfs_write_data", - sizeof(struct nfs_write_header), + sizeof(struct nfs_rw_header), 0, SLAB_HWCACHE_ALIGN, NULL); if (nfs_wdata_cachep == NULL) diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 64f6f1491c0..2d34e0dc187 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1294,12 +1294,7 @@ struct nfs_pgio_data { struct nfs_client *ds_clp; /* pNFS data server */ }; -struct nfs_read_header { - struct nfs_pgio_header header; - struct nfs_pgio_data rpc_data; -}; - -struct nfs_write_header { +struct nfs_rw_header { struct nfs_pgio_header header; struct nfs_pgio_data rpc_data; struct nfs_writeverf verf; -- cgit v1.2.3-70-g09d2 From f79d06f544a797d75cbf5256a5d06c4b3d2759cc Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Tue, 6 May 2014 09:12:28 -0400 Subject: NFS: Move the write verifier into the nfs_pgio_header The header had a pointer to the verifier that was set from the old write data struct. We don't need to keep the pointer around now that we have shared structures. Signed-off-by: Anna Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/direct.c | 4 ++-- fs/nfs/write.c | 7 +++---- include/linux/nfs_xdr.h | 3 +-- 3 files changed, 6 insertions(+), 8 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index bbe688e2cc8..164b0167677 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -813,12 +813,12 @@ static void nfs_direct_write_completion(struct nfs_pgio_header *hdr) if (dreq->flags == NFS_ODIRECT_RESCHED_WRITES) bit = NFS_IOHDR_NEED_RESCHED; else if (dreq->flags == 0) { - memcpy(&dreq->verf, hdr->verf, + memcpy(&dreq->verf, &hdr->verf, sizeof(dreq->verf)); bit = NFS_IOHDR_NEED_COMMIT; dreq->flags = NFS_ODIRECT_DO_COMMIT; } else if (dreq->flags == NFS_ODIRECT_DO_COMMIT) { - if (memcmp(&dreq->verf, hdr->verf, sizeof(dreq->verf))) { + if (memcmp(&dreq->verf, &hdr->verf, sizeof(dreq->verf))) { dreq->flags = NFS_ODIRECT_RESCHED_WRITES; bit = NFS_IOHDR_NEED_RESCHED; } else diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 37c4c988519..321a791c72b 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -82,7 +82,6 @@ struct nfs_rw_header *nfs_writehdr_alloc(void) INIT_LIST_HEAD(&hdr->rpc_list); spin_lock_init(&hdr->lock); atomic_set(&hdr->refcnt, 0); - hdr->verf = &p->verf; } return p; } @@ -644,7 +643,7 @@ static void nfs_write_completion(struct nfs_pgio_header *hdr) goto next; } if (test_bit(NFS_IOHDR_NEED_COMMIT, &hdr->flags)) { - memcpy(&req->wb_verf, &hdr->verf->verifier, sizeof(req->wb_verf)); + memcpy(&req->wb_verf, &hdr->verf.verifier, sizeof(req->wb_verf)); nfs_mark_request_commit(req, hdr->lseg, &cinfo); goto next; } @@ -1344,8 +1343,8 @@ static void nfs_writeback_release_common(void *calldata) if (test_bit(NFS_IOHDR_NEED_RESCHED, &hdr->flags)) ; /* Do nothing */ else if (!test_and_set_bit(NFS_IOHDR_NEED_COMMIT, &hdr->flags)) - memcpy(hdr->verf, &data->verf, sizeof(*hdr->verf)); - else if (memcmp(hdr->verf, &data->verf, sizeof(*hdr->verf))) + memcpy(&hdr->verf, &data->verf, sizeof(hdr->verf)); + else if (memcmp(&hdr->verf, &data->verf, sizeof(hdr->verf))) set_bit(NFS_IOHDR_NEED_RESCHED, &hdr->flags); spin_unlock(&hdr->lock); } diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 2d34e0dc187..965c2aa6b33 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1263,7 +1263,7 @@ struct nfs_pgio_header { struct list_head rpc_list; atomic_t refcnt; struct nfs_page *req; - struct nfs_writeverf *verf; + struct nfs_writeverf verf; /* Used for writes */ struct pnfs_layout_segment *lseg; loff_t io_start; const struct rpc_call_ops *mds_ops; @@ -1297,7 +1297,6 @@ struct nfs_pgio_data { struct nfs_rw_header { struct nfs_pgio_header header; struct nfs_pgio_data rpc_data; - struct nfs_writeverf verf; }; struct nfs_mds_commit_info { -- cgit v1.2.3-70-g09d2 From 00bfa30abe86982ce1929e9cabd703e5546106bd Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Tue, 6 May 2014 09:12:29 -0400 Subject: NFS: Create a common pgio_alloc and pgio_release function These functions are identical for the read and write paths so they can be combined. Signed-off-by: Anna Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/internal.h | 6 +++--- fs/nfs/pagelist.c | 62 ++++++++++++++++++++++++++++++++++++++++++++++++++++++- fs/nfs/pnfs.c | 4 ++-- fs/nfs/read.c | 54 ++++-------------------------------------------- fs/nfs/write.c | 54 ++++-------------------------------------------- 5 files changed, 74 insertions(+), 106 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index b0e7a41d14a..5ddc142c506 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -231,13 +231,15 @@ extern void nfs_destroy_writepagecache(void); extern int __init nfs_init_directcache(void); extern void nfs_destroy_directcache(void); -extern bool nfs_pgarray_set(struct nfs_page_array *p, unsigned int pagecount); extern void nfs_pgheader_init(struct nfs_pageio_descriptor *desc, struct nfs_pgio_header *hdr, void (*release)(struct nfs_pgio_header *hdr)); void nfs_set_pgio_error(struct nfs_pgio_header *hdr, int error, loff_t pos); int nfs_iocounter_wait(struct nfs_io_counter *c); +struct nfs_pgio_data *nfs_pgio_data_alloc(struct nfs_pgio_header *, unsigned int); +void nfs_pgio_data_release(struct nfs_pgio_data *); + static inline void nfs_iocounter_init(struct nfs_io_counter *c) { c->flags = 0; @@ -407,7 +409,6 @@ extern void nfs_read_prepare(struct rpc_task *task, void *calldata); extern int nfs_generic_pagein(struct nfs_pageio_descriptor *desc, struct nfs_pgio_header *hdr); extern void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio); -extern void nfs_readdata_release(struct nfs_pgio_data *rdata); /* super.c */ void nfs_clone_super(struct super_block *, struct nfs_mount_info *); @@ -429,7 +430,6 @@ extern void nfs_writehdr_free(struct nfs_pgio_header *hdr); extern int nfs_generic_flush(struct nfs_pageio_descriptor *desc, struct nfs_pgio_header *hdr); extern void nfs_pageio_reset_write_mds(struct nfs_pageio_descriptor *pgio); -extern void nfs_writedata_release(struct nfs_pgio_data *wdata); extern void nfs_commit_free(struct nfs_commit_data *p); extern int nfs_initiate_write(struct rpc_clnt *clnt, struct nfs_pgio_data *data, diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index 2ffebf2081c..a98ccf722d7 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -26,7 +26,7 @@ static struct kmem_cache *nfs_page_cachep; -bool nfs_pgarray_set(struct nfs_page_array *p, unsigned int pagecount) +static bool nfs_pgarray_set(struct nfs_page_array *p, unsigned int pagecount) { p->npages = pagecount; if (pagecount <= ARRAY_SIZE(p->page_array)) @@ -295,6 +295,66 @@ bool nfs_generic_pg_test(struct nfs_pageio_descriptor *desc, struct nfs_page *pr } EXPORT_SYMBOL_GPL(nfs_generic_pg_test); +static inline struct nfs_rw_header *NFS_RW_HEADER(struct nfs_pgio_header *hdr) +{ + return container_of(hdr, struct nfs_rw_header, header); +} + +/** + * nfs_pgio_data_alloc - Allocate pageio data + * @hdr: The header making a request + * @pagecount: Number of pages to create + */ +struct nfs_pgio_data *nfs_pgio_data_alloc(struct nfs_pgio_header *hdr, + unsigned int pagecount) +{ + struct nfs_pgio_data *data, *prealloc; + + prealloc = &NFS_RW_HEADER(hdr)->rpc_data; + if (prealloc->header == NULL) + data = prealloc; + else + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (!data) + goto out; + + if (nfs_pgarray_set(&data->pages, pagecount)) { + data->header = hdr; + atomic_inc(&hdr->refcnt); + } else { + if (data != prealloc) + kfree(data); + data = NULL; + } +out: + return data; +} + +/** + * nfs_pgio_data_release - Properly free pageio data + * @data: The data to release + */ +void nfs_pgio_data_release(struct nfs_pgio_data *data) +{ + struct nfs_pgio_header *hdr = data->header; + struct nfs_rw_header *pageio_header = NFS_RW_HEADER(hdr); + + put_nfs_open_context(data->args.context); + if (data->pages.pagevec != data->pages.page_array) + kfree(data->pages.pagevec); + if (data == &pageio_header->rpc_data) { + data->header = NULL; + data = NULL; + } + if (atomic_dec_and_test(&hdr->refcnt)) + hdr->completion_ops->completion(hdr); + /* Note: we only free the rpc_task after callbacks are done. + * See the comment in rpc_free_task() for why + */ + kfree(data); +} +EXPORT_SYMBOL_GPL(nfs_pgio_data_release); + /** * nfs_pageio_init - initialise a page io descriptor * @desc: pointer to descriptor diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 43cfe11aa1a..e192ba69a7d 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1536,7 +1536,7 @@ pnfs_write_through_mds(struct nfs_pageio_descriptor *desc, nfs_pageio_reset_write_mds(desc); desc->pg_recoalesce = 1; } - nfs_writedata_release(data); + nfs_pgio_data_release(data); } static enum pnfs_try_status @@ -1691,7 +1691,7 @@ pnfs_read_through_mds(struct nfs_pageio_descriptor *desc, nfs_pageio_reset_read_mds(desc); desc->pg_recoalesce = 1; } - nfs_readdata_release(data); + nfs_pgio_data_release(data); } /* diff --git a/fs/nfs/read.c b/fs/nfs/read.c index d29ca367369..ab4c1a5b5fb 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -51,31 +51,6 @@ struct nfs_rw_header *nfs_readhdr_alloc(void) } EXPORT_SYMBOL_GPL(nfs_readhdr_alloc); -static struct nfs_pgio_data *nfs_readdata_alloc(struct nfs_pgio_header *hdr, - unsigned int pagecount) -{ - struct nfs_pgio_data *data, *prealloc; - - prealloc = &container_of(hdr, struct nfs_rw_header, header)->rpc_data; - if (prealloc->header == NULL) - data = prealloc; - else - data = kzalloc(sizeof(*data), GFP_KERNEL); - if (!data) - goto out; - - if (nfs_pgarray_set(&data->pages, pagecount)) { - data->header = hdr; - atomic_inc(&hdr->refcnt); - } else { - if (data != prealloc) - kfree(data); - data = NULL; - } -out: - return data; -} - void nfs_readhdr_free(struct nfs_pgio_header *hdr) { struct nfs_rw_header *rhdr = container_of(hdr, struct nfs_rw_header, header); @@ -84,27 +59,6 @@ void nfs_readhdr_free(struct nfs_pgio_header *hdr) } EXPORT_SYMBOL_GPL(nfs_readhdr_free); -void nfs_readdata_release(struct nfs_pgio_data *rdata) -{ - struct nfs_pgio_header *hdr = rdata->header; - struct nfs_rw_header *read_header = container_of(hdr, struct nfs_rw_header, header); - - put_nfs_open_context(rdata->args.context); - if (rdata->pages.pagevec != rdata->pages.page_array) - kfree(rdata->pages.pagevec); - if (rdata == &read_header->rpc_data) { - rdata->header = NULL; - rdata = NULL; - } - if (atomic_dec_and_test(&hdr->refcnt)) - hdr->completion_ops->completion(hdr); - /* Note: we only free the rpc_task after callbacks are done. - * See the comment in rpc_free_task() for why - */ - kfree(rdata); -} -EXPORT_SYMBOL_GPL(nfs_readdata_release); - static int nfs_return_empty_page(struct page *page) { @@ -327,7 +281,7 @@ static void nfs_pagein_error(struct nfs_pageio_descriptor *desc, struct nfs_pgio_data *data = list_first_entry(&hdr->rpc_list, struct nfs_pgio_data, list); list_del(&data->list); - nfs_readdata_release(data); + nfs_pgio_data_release(data); } desc->pg_completion_ops->error_cleanup(&desc->pg_list); } @@ -359,7 +313,7 @@ static int nfs_pagein_multi(struct nfs_pageio_descriptor *desc, do { size_t len = min(nbytes,rsize); - data = nfs_readdata_alloc(hdr, 1); + data = nfs_pgio_data_alloc(hdr, 1); if (!data) { nfs_pagein_error(desc, hdr); return -ENOMEM; @@ -385,7 +339,7 @@ static int nfs_pagein_one(struct nfs_pageio_descriptor *desc, struct nfs_pgio_data *data; struct list_head *head = &desc->pg_list; - data = nfs_readdata_alloc(hdr, nfs_page_array_len(desc->pg_base, + data = nfs_pgio_data_alloc(hdr, nfs_page_array_len(desc->pg_base, desc->pg_count)); if (!data) { nfs_pagein_error(desc, hdr); @@ -515,7 +469,7 @@ static void nfs_readpage_result_common(struct rpc_task *task, void *calldata) static void nfs_readpage_release_common(void *calldata) { - nfs_readdata_release(calldata); + nfs_pgio_data_release(calldata); } void nfs_read_prepare(struct rpc_task *task, void *calldata) diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 321a791c72b..0dc4d6a28bd 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -87,31 +87,6 @@ struct nfs_rw_header *nfs_writehdr_alloc(void) } EXPORT_SYMBOL_GPL(nfs_writehdr_alloc); -static struct nfs_pgio_data *nfs_writedata_alloc(struct nfs_pgio_header *hdr, - unsigned int pagecount) -{ - struct nfs_pgio_data *data, *prealloc; - - prealloc = &container_of(hdr, struct nfs_rw_header, header)->rpc_data; - if (prealloc->header == NULL) - data = prealloc; - else - data = kzalloc(sizeof(*data), GFP_KERNEL); - if (!data) - goto out; - - if (nfs_pgarray_set(&data->pages, pagecount)) { - data->header = hdr; - atomic_inc(&hdr->refcnt); - } else { - if (data != prealloc) - kfree(data); - data = NULL; - } -out: - return data; -} - void nfs_writehdr_free(struct nfs_pgio_header *hdr) { struct nfs_rw_header *whdr = container_of(hdr, struct nfs_rw_header, header); @@ -119,27 +94,6 @@ void nfs_writehdr_free(struct nfs_pgio_header *hdr) } EXPORT_SYMBOL_GPL(nfs_writehdr_free); -void nfs_writedata_release(struct nfs_pgio_data *wdata) -{ - struct nfs_pgio_header *hdr = wdata->header; - struct nfs_rw_header *write_header = container_of(hdr, struct nfs_rw_header, header); - - put_nfs_open_context(wdata->args.context); - if (wdata->pages.pagevec != wdata->pages.page_array) - kfree(wdata->pages.pagevec); - if (wdata == &write_header->rpc_data) { - wdata->header = NULL; - wdata = NULL; - } - if (atomic_dec_and_test(&hdr->refcnt)) - hdr->completion_ops->completion(hdr); - /* Note: we only free the rpc_task after callbacks are done. - * See the comment in rpc_free_task() for why - */ - kfree(wdata); -} -EXPORT_SYMBOL_GPL(nfs_writedata_release); - static void nfs_context_set_write_error(struct nfs_open_context *ctx, int error) { ctx->error = error; @@ -1146,7 +1100,7 @@ static void nfs_flush_error(struct nfs_pageio_descriptor *desc, struct nfs_pgio_data *data = list_first_entry(&hdr->rpc_list, struct nfs_pgio_data, list); list_del(&data->list); - nfs_writedata_release(data); + nfs_pgio_data_release(data); } desc->pg_completion_ops->error_cleanup(&desc->pg_list); } @@ -1179,7 +1133,7 @@ static int nfs_flush_multi(struct nfs_pageio_descriptor *desc, do { size_t len = min(nbytes, wsize); - data = nfs_writedata_alloc(hdr, 1); + data = nfs_pgio_data_alloc(hdr, 1); if (!data) { nfs_flush_error(desc, hdr); return -ENOMEM; @@ -1214,7 +1168,7 @@ static int nfs_flush_one(struct nfs_pageio_descriptor *desc, struct list_head *head = &desc->pg_list; struct nfs_commit_info cinfo; - data = nfs_writedata_alloc(hdr, nfs_page_array_len(desc->pg_base, + data = nfs_pgio_data_alloc(hdr, nfs_page_array_len(desc->pg_base, desc->pg_count)); if (!data) { nfs_flush_error(desc, hdr); @@ -1348,7 +1302,7 @@ static void nfs_writeback_release_common(void *calldata) set_bit(NFS_IOHDR_NEED_RESCHED, &hdr->flags); spin_unlock(&hdr->lock); } - nfs_writedata_release(data); + nfs_pgio_data_release(data); } static const struct rpc_call_ops nfs_write_common_ops = { -- cgit v1.2.3-70-g09d2 From 4a0de55c565a36cac8422b76a948c4634a90781e Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Tue, 6 May 2014 09:12:30 -0400 Subject: NFS: Create a common rw_header_alloc and rw_header_free function I create a new struct nfs_rw_ops to decide the differences between reads and writes. This struct will be set when initializing a new nfs_pgio_descriptor, and then passed on to the nfs_rw_header when a new header is allocated. Signed-off-by: Anna Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/internal.h | 6 ++---- fs/nfs/pagelist.c | 33 +++++++++++++++++++++++++++++++++ fs/nfs/pnfs.c | 8 ++++---- fs/nfs/read.c | 34 +++++++++++++--------------------- fs/nfs/write.c | 28 ++++++++++++---------------- include/linux/nfs_page.h | 7 +++++++ include/linux/nfs_xdr.h | 1 + 7 files changed, 72 insertions(+), 45 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 5ddc142c506..9d6a40eae11 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -237,6 +237,8 @@ extern void nfs_pgheader_init(struct nfs_pageio_descriptor *desc, void nfs_set_pgio_error(struct nfs_pgio_header *hdr, int error, loff_t pos); int nfs_iocounter_wait(struct nfs_io_counter *c); +struct nfs_rw_header *nfs_rw_header_alloc(const struct nfs_rw_ops *); +void nfs_rw_header_free(struct nfs_pgio_header *); struct nfs_pgio_data *nfs_pgio_data_alloc(struct nfs_pgio_header *, unsigned int); void nfs_pgio_data_release(struct nfs_pgio_data *); @@ -397,8 +399,6 @@ extern int nfs4_get_rootfh(struct nfs_server *server, struct nfs_fh *mntfh, bool struct nfs_pgio_completion_ops; /* read.c */ -extern struct nfs_rw_header *nfs_readhdr_alloc(void); -extern void nfs_readhdr_free(struct nfs_pgio_header *hdr); extern void nfs_pageio_init_read(struct nfs_pageio_descriptor *pgio, struct inode *inode, bool force_mds, const struct nfs_pgio_completion_ops *compl_ops); @@ -425,8 +425,6 @@ int nfs_remount(struct super_block *sb, int *flags, char *raw_data); extern void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, struct inode *inode, int ioflags, bool force_mds, const struct nfs_pgio_completion_ops *compl_ops); -extern struct nfs_rw_header *nfs_writehdr_alloc(void); -extern void nfs_writehdr_free(struct nfs_pgio_header *hdr); extern int nfs_generic_flush(struct nfs_pageio_descriptor *desc, struct nfs_pgio_header *hdr); extern void nfs_pageio_reset_write_mds(struct nfs_pageio_descriptor *pgio); diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index a98ccf722d7..ca356fe0836 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -300,6 +300,37 @@ static inline struct nfs_rw_header *NFS_RW_HEADER(struct nfs_pgio_header *hdr) return container_of(hdr, struct nfs_rw_header, header); } +/** + * nfs_rw_header_alloc - Allocate a header for a read or write + * @ops: Read or write function vector + */ +struct nfs_rw_header *nfs_rw_header_alloc(const struct nfs_rw_ops *ops) +{ + struct nfs_rw_header *header = ops->rw_alloc_header(); + + if (header) { + struct nfs_pgio_header *hdr = &header->header; + + INIT_LIST_HEAD(&hdr->pages); + INIT_LIST_HEAD(&hdr->rpc_list); + spin_lock_init(&hdr->lock); + atomic_set(&hdr->refcnt, 0); + hdr->rw_ops = ops; + } + return header; +} +EXPORT_SYMBOL_GPL(nfs_rw_header_alloc); + +/* + * nfs_rw_header_free - Free a read or write header + * @hdr: The header to free + */ +void nfs_rw_header_free(struct nfs_pgio_header *hdr) +{ + hdr->rw_ops->rw_free_header(NFS_RW_HEADER(hdr)); +} +EXPORT_SYMBOL_GPL(nfs_rw_header_free); + /** * nfs_pgio_data_alloc - Allocate pageio data * @hdr: The header making a request @@ -367,6 +398,7 @@ void nfs_pageio_init(struct nfs_pageio_descriptor *desc, struct inode *inode, const struct nfs_pageio_ops *pg_ops, const struct nfs_pgio_completion_ops *compl_ops, + const struct nfs_rw_ops *rw_ops, size_t bsize, int io_flags) { @@ -380,6 +412,7 @@ void nfs_pageio_init(struct nfs_pageio_descriptor *desc, desc->pg_inode = inode; desc->pg_ops = pg_ops; desc->pg_completion_ops = compl_ops; + desc->pg_rw_ops = rw_ops; desc->pg_ioflags = io_flags; desc->pg_error = 0; desc->pg_lseg = NULL; diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index e192ba69a7d..54c84c128b2 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1585,7 +1585,7 @@ pnfs_do_multiple_writes(struct nfs_pageio_descriptor *desc, struct list_head *he static void pnfs_writehdr_free(struct nfs_pgio_header *hdr) { pnfs_put_lseg(hdr->lseg); - nfs_writehdr_free(hdr); + nfs_rw_header_free(hdr); } EXPORT_SYMBOL_GPL(pnfs_writehdr_free); @@ -1596,7 +1596,7 @@ pnfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc) struct nfs_pgio_header *hdr; int ret; - whdr = nfs_writehdr_alloc(); + whdr = nfs_rw_header_alloc(desc->pg_rw_ops); if (!whdr) { desc->pg_completion_ops->error_cleanup(&desc->pg_list); pnfs_put_lseg(desc->pg_lseg); @@ -1743,7 +1743,7 @@ pnfs_do_multiple_reads(struct nfs_pageio_descriptor *desc, struct list_head *hea static void pnfs_readhdr_free(struct nfs_pgio_header *hdr) { pnfs_put_lseg(hdr->lseg); - nfs_readhdr_free(hdr); + nfs_rw_header_free(hdr); } EXPORT_SYMBOL_GPL(pnfs_readhdr_free); @@ -1754,7 +1754,7 @@ pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc) struct nfs_pgio_header *hdr; int ret; - rhdr = nfs_readhdr_alloc(); + rhdr = nfs_rw_header_alloc(desc->pg_rw_ops); if (!rhdr) { desc->pg_completion_ops->error_cleanup(&desc->pg_list); ret = -ENOMEM; diff --git a/fs/nfs/read.c b/fs/nfs/read.c index ab4c1a5b5fb..4cf3577bd54 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -31,33 +31,19 @@ static const struct nfs_pageio_ops nfs_pageio_read_ops; static const struct rpc_call_ops nfs_read_common_ops; static const struct nfs_pgio_completion_ops nfs_async_read_completion_ops; +static const struct nfs_rw_ops nfs_rw_read_ops; static struct kmem_cache *nfs_rdata_cachep; -struct nfs_rw_header *nfs_readhdr_alloc(void) +static struct nfs_rw_header *nfs_readhdr_alloc(void) { - struct nfs_rw_header *rhdr; - - rhdr = kmem_cache_zalloc(nfs_rdata_cachep, GFP_KERNEL); - if (rhdr) { - struct nfs_pgio_header *hdr = &rhdr->header; - - INIT_LIST_HEAD(&hdr->pages); - INIT_LIST_HEAD(&hdr->rpc_list); - spin_lock_init(&hdr->lock); - atomic_set(&hdr->refcnt, 0); - } - return rhdr; + return kmem_cache_zalloc(nfs_rdata_cachep, GFP_KERNEL); } -EXPORT_SYMBOL_GPL(nfs_readhdr_alloc); -void nfs_readhdr_free(struct nfs_pgio_header *hdr) +static void nfs_readhdr_free(struct nfs_rw_header *rhdr) { - struct nfs_rw_header *rhdr = container_of(hdr, struct nfs_rw_header, header); - kmem_cache_free(nfs_rdata_cachep, rhdr); } -EXPORT_SYMBOL_GPL(nfs_readhdr_free); static int nfs_return_empty_page(struct page *page) @@ -79,7 +65,8 @@ void nfs_pageio_init_read(struct nfs_pageio_descriptor *pgio, if (server->pnfs_curr_ld && !force_mds) pg_ops = server->pnfs_curr_ld->pg_read_ops; #endif - nfs_pageio_init(pgio, inode, pg_ops, compl_ops, server->rsize, 0); + nfs_pageio_init(pgio, inode, pg_ops, compl_ops, &nfs_rw_read_ops, + server->rsize, 0); } EXPORT_SYMBOL_GPL(nfs_pageio_init_read); @@ -375,13 +362,13 @@ static int nfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc) struct nfs_pgio_header *hdr; int ret; - rhdr = nfs_readhdr_alloc(); + rhdr = nfs_rw_header_alloc(desc->pg_rw_ops); if (!rhdr) { desc->pg_completion_ops->error_cleanup(&desc->pg_list); return -ENOMEM; } hdr = &rhdr->header; - nfs_pgheader_init(desc, hdr, nfs_readhdr_free); + nfs_pgheader_init(desc, hdr, nfs_rw_header_free); atomic_inc(&hdr->refcnt); ret = nfs_generic_pagein(desc, hdr); if (ret == 0) @@ -647,3 +634,8 @@ void nfs_destroy_readpagecache(void) { kmem_cache_destroy(nfs_rdata_cachep); } + +static const struct nfs_rw_ops nfs_rw_read_ops = { + .rw_alloc_header = nfs_readhdr_alloc, + .rw_free_header = nfs_readhdr_free, +}; diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 0dc4d6a28bd..9c5cde38da4 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -46,6 +46,7 @@ static const struct rpc_call_ops nfs_write_common_ops; static const struct rpc_call_ops nfs_commit_ops; static const struct nfs_pgio_completion_ops nfs_async_write_completion_ops; static const struct nfs_commit_completion_ops nfs_commit_completion_ops; +static const struct nfs_rw_ops nfs_rw_write_ops; static struct kmem_cache *nfs_wdata_cachep; static mempool_t *nfs_wdata_mempool; @@ -70,29 +71,19 @@ void nfs_commit_free(struct nfs_commit_data *p) } EXPORT_SYMBOL_GPL(nfs_commit_free); -struct nfs_rw_header *nfs_writehdr_alloc(void) +static struct nfs_rw_header *nfs_writehdr_alloc(void) { struct nfs_rw_header *p = mempool_alloc(nfs_wdata_mempool, GFP_NOIO); - if (p) { - struct nfs_pgio_header *hdr = &p->header; - + if (p) memset(p, 0, sizeof(*p)); - INIT_LIST_HEAD(&hdr->pages); - INIT_LIST_HEAD(&hdr->rpc_list); - spin_lock_init(&hdr->lock); - atomic_set(&hdr->refcnt, 0); - } return p; } -EXPORT_SYMBOL_GPL(nfs_writehdr_alloc); -void nfs_writehdr_free(struct nfs_pgio_header *hdr) +static void nfs_writehdr_free(struct nfs_rw_header *whdr) { - struct nfs_rw_header *whdr = container_of(hdr, struct nfs_rw_header, header); mempool_free(whdr, nfs_wdata_mempool); } -EXPORT_SYMBOL_GPL(nfs_writehdr_free); static void nfs_context_set_write_error(struct nfs_open_context *ctx, int error) { @@ -1210,13 +1201,13 @@ static int nfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc) struct nfs_pgio_header *hdr; int ret; - whdr = nfs_writehdr_alloc(); + whdr = nfs_rw_header_alloc(desc->pg_rw_ops); if (!whdr) { desc->pg_completion_ops->error_cleanup(&desc->pg_list); return -ENOMEM; } hdr = &whdr->header; - nfs_pgheader_init(desc, hdr, nfs_writehdr_free); + nfs_pgheader_init(desc, hdr, nfs_rw_header_free); atomic_inc(&hdr->refcnt); ret = nfs_generic_flush(desc, hdr); if (ret == 0) @@ -1244,7 +1235,8 @@ void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, if (server->pnfs_curr_ld && !force_mds) pg_ops = server->pnfs_curr_ld->pg_write_ops; #endif - nfs_pageio_init(pgio, inode, pg_ops, compl_ops, server->wsize, ioflags); + nfs_pageio_init(pgio, inode, pg_ops, compl_ops, &nfs_rw_write_ops, + server->wsize, ioflags); } EXPORT_SYMBOL_GPL(nfs_pageio_init_write); @@ -1925,3 +1917,7 @@ void nfs_destroy_writepagecache(void) kmem_cache_destroy(nfs_wdata_cachep); } +static const struct nfs_rw_ops nfs_rw_write_ops = { + .rw_alloc_header = nfs_writehdr_alloc, + .rw_free_header = nfs_writehdr_free, +}; diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h index 92ce5783b70..594812546c2 100644 --- a/include/linux/nfs_page.h +++ b/include/linux/nfs_page.h @@ -52,6 +52,11 @@ struct nfs_pageio_ops { int (*pg_doio)(struct nfs_pageio_descriptor *); }; +struct nfs_rw_ops { + struct nfs_rw_header *(*rw_alloc_header)(void); + void (*rw_free_header)(struct nfs_rw_header *); +}; + struct nfs_pageio_descriptor { struct list_head pg_list; unsigned long pg_bytes_written; @@ -63,6 +68,7 @@ struct nfs_pageio_descriptor { struct inode *pg_inode; const struct nfs_pageio_ops *pg_ops; + const struct nfs_rw_ops *pg_rw_ops; int pg_ioflags; int pg_error; const struct rpc_call_ops *pg_rpc_callops; @@ -86,6 +92,7 @@ extern void nfs_pageio_init(struct nfs_pageio_descriptor *desc, struct inode *inode, const struct nfs_pageio_ops *pg_ops, const struct nfs_pgio_completion_ops *compl_ops, + const struct nfs_rw_ops *rw_ops, size_t bsize, int how); extern int nfs_pageio_add_request(struct nfs_pageio_descriptor *, diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 965c2aa6b33..a1b91b67145 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1269,6 +1269,7 @@ struct nfs_pgio_header { const struct rpc_call_ops *mds_ops; void (*release) (struct nfs_pgio_header *hdr); const struct nfs_pgio_completion_ops *completion_ops; + const struct nfs_rw_ops *rw_ops; struct nfs_direct_req *dreq; void *layout_private; spinlock_t lock; -- cgit v1.2.3-70-g09d2 From a4cdda59111f92000297e0d3edb1e0e08ba3549b Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Tue, 6 May 2014 09:12:31 -0400 Subject: NFS: Create a common pgio_rpc_prepare function The read and write paths do exactly the same thing for the rpc_prepare rpc_op. This patch combines them together into a single function. Signed-off-by: Anna Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/internal.h | 2 ++ fs/nfs/nfs3proc.c | 11 ++--------- fs/nfs/nfs4proc.c | 22 +++------------------- fs/nfs/pagelist.c | 26 ++++++++++++++++++++++++++ fs/nfs/proc.c | 11 ++--------- fs/nfs/read.c | 19 +++---------------- fs/nfs/write.c | 19 +++++-------------- include/linux/nfs_page.h | 2 ++ include/linux/nfs_xdr.h | 3 +-- 9 files changed, 46 insertions(+), 69 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 9d6a40eae11..1959260f8c5 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -241,6 +241,8 @@ struct nfs_rw_header *nfs_rw_header_alloc(const struct nfs_rw_ops *); void nfs_rw_header_free(struct nfs_pgio_header *); struct nfs_pgio_data *nfs_pgio_data_alloc(struct nfs_pgio_header *, unsigned int); void nfs_pgio_data_release(struct nfs_pgio_data *); +void nfs_pgio_prepare(struct rpc_task *, void *); +void nfs_pgio_release(void *); static inline void nfs_iocounter_init(struct nfs_io_counter *c) { diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c index d235369c3df..e7daa42bbc8 100644 --- a/fs/nfs/nfs3proc.c +++ b/fs/nfs/nfs3proc.c @@ -812,7 +812,7 @@ static void nfs3_proc_read_setup(struct nfs_pgio_data *data, struct rpc_message msg->rpc_proc = &nfs3_procedures[NFS3PROC_READ]; } -static int nfs3_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_pgio_data *data) +static int nfs3_proc_pgio_rpc_prepare(struct rpc_task *task, struct nfs_pgio_data *data) { rpc_call_start(task); return 0; @@ -834,12 +834,6 @@ static void nfs3_proc_write_setup(struct nfs_pgio_data *data, struct rpc_message msg->rpc_proc = &nfs3_procedures[NFS3PROC_WRITE]; } -static int nfs3_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_pgio_data *data) -{ - rpc_call_start(task); - return 0; -} - static void nfs3_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) { rpc_call_start(task); @@ -946,11 +940,10 @@ const struct nfs_rpc_ops nfs_v3_clientops = { .fsinfo = nfs3_proc_fsinfo, .pathconf = nfs3_proc_pathconf, .decode_dirent = nfs3_decode_dirent, + .pgio_rpc_prepare = nfs3_proc_pgio_rpc_prepare, .read_setup = nfs3_proc_read_setup, - .read_rpc_prepare = nfs3_proc_read_rpc_prepare, .read_done = nfs3_read_done, .write_setup = nfs3_proc_write_setup, - .write_rpc_prepare = nfs3_proc_write_rpc_prepare, .write_done = nfs3_write_done, .commit_setup = nfs3_proc_commit_setup, .commit_rpc_prepare = nfs3_proc_commit_rpc_prepare, diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index e793aa91454..44fb93a66d2 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -4089,7 +4089,7 @@ static void nfs4_proc_read_setup(struct nfs_pgio_data *data, struct rpc_message nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); } -static int nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_pgio_data *data) +static int nfs4_proc_pgio_rpc_prepare(struct rpc_task *task, struct nfs_pgio_data *data) { if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), &data->args.seq_args, @@ -4097,7 +4097,7 @@ static int nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_pgio_dat task)) return 0; if (nfs4_set_rw_stateid(&data->args.stateid, data->args.context, - data->args.lock_context, FMODE_READ) == -EIO) + data->args.lock_context, data->header->rw_ops->rw_mode) == -EIO) return -EIO; if (unlikely(test_bit(NFS_CONTEXT_BAD, &data->args.context->flags))) return -EIO; @@ -4177,21 +4177,6 @@ static void nfs4_proc_write_setup(struct nfs_pgio_data *data, struct rpc_message nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); } -static int nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_pgio_data *data) -{ - if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), - &data->args.seq_args, - &data->res.seq_res, - task)) - return 0; - if (nfs4_set_rw_stateid(&data->args.stateid, data->args.context, - data->args.lock_context, FMODE_WRITE) == -EIO) - return -EIO; - if (unlikely(test_bit(NFS_CONTEXT_BAD, &data->args.context->flags))) - return -EIO; - return 0; -} - static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) { nfs4_setup_sequence(NFS_SERVER(data->inode), @@ -8432,11 +8417,10 @@ const struct nfs_rpc_ops nfs_v4_clientops = { .pathconf = nfs4_proc_pathconf, .set_capabilities = nfs4_server_capabilities, .decode_dirent = nfs4_decode_dirent, + .pgio_rpc_prepare = nfs4_proc_pgio_rpc_prepare, .read_setup = nfs4_proc_read_setup, - .read_rpc_prepare = nfs4_proc_read_rpc_prepare, .read_done = nfs4_read_done, .write_setup = nfs4_proc_write_setup, - .write_rpc_prepare = nfs4_proc_write_rpc_prepare, .write_done = nfs4_write_done, .commit_setup = nfs4_proc_commit_setup, .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index ca356fe0836..0fa211d35e4 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -386,6 +386,32 @@ void nfs_pgio_data_release(struct nfs_pgio_data *data) } EXPORT_SYMBOL_GPL(nfs_pgio_data_release); +/** + * nfs_pgio_prepare - Prepare pageio data to go over the wire + * @task: The current task + * @calldata: pageio data to prepare + */ +void nfs_pgio_prepare(struct rpc_task *task, void *calldata) +{ + struct nfs_pgio_data *data = calldata; + int err; + err = NFS_PROTO(data->header->inode)->pgio_rpc_prepare(task, data); + if (err) + rpc_exit(task, err); +} + +/** + * nfs_pgio_release - Release pageio data + * @calldata: The pageio data to release + */ +void nfs_pgio_release(void *calldata) +{ + struct nfs_pgio_data *data = calldata; + if (data->header->rw_ops->rw_release) + data->header->rw_ops->rw_release(data); + nfs_pgio_data_release(data); +} + /** * nfs_pageio_init - initialise a page io descriptor * @desc: pointer to descriptor diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c index c54829eb215..c171ce1a8a3 100644 --- a/fs/nfs/proc.c +++ b/fs/nfs/proc.c @@ -599,7 +599,7 @@ static void nfs_proc_read_setup(struct nfs_pgio_data *data, struct rpc_message * msg->rpc_proc = &nfs_procedures[NFSPROC_READ]; } -static int nfs_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_pgio_data *data) +static int nfs_proc_pgio_rpc_prepare(struct rpc_task *task, struct nfs_pgio_data *data) { rpc_call_start(task); return 0; @@ -621,12 +621,6 @@ static void nfs_proc_write_setup(struct nfs_pgio_data *data, struct rpc_message msg->rpc_proc = &nfs_procedures[NFSPROC_WRITE]; } -static int nfs_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_pgio_data *data) -{ - rpc_call_start(task); - return 0; -} - static void nfs_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) { BUG(); @@ -734,11 +728,10 @@ const struct nfs_rpc_ops nfs_v2_clientops = { .fsinfo = nfs_proc_fsinfo, .pathconf = nfs_proc_pathconf, .decode_dirent = nfs2_decode_dirent, + .pgio_rpc_prepare = nfs_proc_pgio_rpc_prepare, .read_setup = nfs_proc_read_setup, - .read_rpc_prepare = nfs_proc_read_rpc_prepare, .read_done = nfs_read_done, .write_setup = nfs_proc_write_setup, - .write_rpc_prepare = nfs_proc_write_rpc_prepare, .write_done = nfs_write_done, .commit_setup = nfs_proc_commit_setup, .commit_rpc_prepare = nfs_proc_commit_rpc_prepare, diff --git a/fs/nfs/read.c b/fs/nfs/read.c index 4cf3577bd54..cfa15e828dd 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -454,24 +454,10 @@ static void nfs_readpage_result_common(struct rpc_task *task, void *calldata) nfs_readpage_retry(task, data); } -static void nfs_readpage_release_common(void *calldata) -{ - nfs_pgio_data_release(calldata); -} - -void nfs_read_prepare(struct rpc_task *task, void *calldata) -{ - struct nfs_pgio_data *data = calldata; - int err; - err = NFS_PROTO(data->header->inode)->read_rpc_prepare(task, data); - if (err) - rpc_exit(task, err); -} - static const struct rpc_call_ops nfs_read_common_ops = { - .rpc_call_prepare = nfs_read_prepare, + .rpc_call_prepare = nfs_pgio_prepare, .rpc_call_done = nfs_readpage_result_common, - .rpc_release = nfs_readpage_release_common, + .rpc_release = nfs_pgio_release, }; /* @@ -636,6 +622,7 @@ void nfs_destroy_readpagecache(void) } static const struct nfs_rw_ops nfs_rw_read_ops = { + .rw_mode = FMODE_READ, .rw_alloc_header = nfs_readhdr_alloc, .rw_free_header = nfs_readhdr_free, }; diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 9c5cde38da4..ae799c96ec2 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -1248,15 +1248,6 @@ void nfs_pageio_reset_write_mds(struct nfs_pageio_descriptor *pgio) EXPORT_SYMBOL_GPL(nfs_pageio_reset_write_mds); -void nfs_write_prepare(struct rpc_task *task, void *calldata) -{ - struct nfs_pgio_data *data = calldata; - int err; - err = NFS_PROTO(data->header->inode)->write_rpc_prepare(task, data); - if (err) - rpc_exit(task, err); -} - void nfs_commit_prepare(struct rpc_task *task, void *calldata) { struct nfs_commit_data *data = calldata; @@ -1278,9 +1269,8 @@ static void nfs_writeback_done_common(struct rpc_task *task, void *calldata) nfs_writeback_done(task, data); } -static void nfs_writeback_release_common(void *calldata) +static void nfs_writeback_release_common(struct nfs_pgio_data *data) { - struct nfs_pgio_data *data = calldata; struct nfs_pgio_header *hdr = data->header; int status = data->task.tk_status; @@ -1294,13 +1284,12 @@ static void nfs_writeback_release_common(void *calldata) set_bit(NFS_IOHDR_NEED_RESCHED, &hdr->flags); spin_unlock(&hdr->lock); } - nfs_pgio_data_release(data); } static const struct rpc_call_ops nfs_write_common_ops = { - .rpc_call_prepare = nfs_write_prepare, + .rpc_call_prepare = nfs_pgio_prepare, .rpc_call_done = nfs_writeback_done_common, - .rpc_release = nfs_writeback_release_common, + .rpc_release = nfs_pgio_release, }; /* @@ -1918,6 +1907,8 @@ void nfs_destroy_writepagecache(void) } static const struct nfs_rw_ops nfs_rw_write_ops = { + .rw_mode = FMODE_WRITE, .rw_alloc_header = nfs_writehdr_alloc, .rw_free_header = nfs_writehdr_free, + .rw_release = nfs_writeback_release_common, }; diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h index 594812546c2..da00a4d6f47 100644 --- a/include/linux/nfs_page.h +++ b/include/linux/nfs_page.h @@ -53,8 +53,10 @@ struct nfs_pageio_ops { }; struct nfs_rw_ops { + const fmode_t rw_mode; struct nfs_rw_header *(*rw_alloc_header)(void); void (*rw_free_header)(struct nfs_rw_header *); + void (*rw_release)(struct nfs_pgio_data *); }; struct nfs_pageio_descriptor { diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index a1b91b67145..adef7bd2d06 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1429,11 +1429,10 @@ struct nfs_rpc_ops { struct nfs_pathconf *); int (*set_capabilities)(struct nfs_server *, struct nfs_fh *); int (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int); + int (*pgio_rpc_prepare)(struct rpc_task *, struct nfs_pgio_data *); void (*read_setup) (struct nfs_pgio_data *, struct rpc_message *); - int (*read_rpc_prepare)(struct rpc_task *, struct nfs_pgio_data *); int (*read_done) (struct rpc_task *, struct nfs_pgio_data *); void (*write_setup) (struct nfs_pgio_data *, struct rpc_message *); - int (*write_rpc_prepare)(struct rpc_task *, struct nfs_pgio_data *); int (*write_done) (struct rpc_task *, struct nfs_pgio_data *); void (*commit_setup) (struct nfs_commit_data *, struct rpc_message *); void (*commit_rpc_prepare)(struct rpc_task *, struct nfs_commit_data *); -- cgit v1.2.3-70-g09d2 From 0eecb2145c1ce18e36617008424a93836ad0a3bd Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Tue, 6 May 2014 09:12:32 -0400 Subject: NFS: Create a common nfs_pgio_result_common function Combining these functions will let me make a single nfs_rw_common_ops struct (see the next patch). Signed-off-by: Anna Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/internal.h | 1 + fs/nfs/pagelist.c | 23 ++++++++++++++++++++++ fs/nfs/read.c | 25 ++++++++---------------- fs/nfs/write.c | 51 +++++++++++++++++++----------------------------- include/linux/nfs_fs.h | 2 -- include/linux/nfs_page.h | 2 ++ 6 files changed, 54 insertions(+), 50 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 1959260f8c5..7c0ae364bda 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -243,6 +243,7 @@ struct nfs_pgio_data *nfs_pgio_data_alloc(struct nfs_pgio_header *, unsigned int void nfs_pgio_data_release(struct nfs_pgio_data *); void nfs_pgio_prepare(struct rpc_task *, void *); void nfs_pgio_release(void *); +void nfs_pgio_result(struct rpc_task *, void *); static inline void nfs_iocounter_init(struct nfs_io_counter *c) { diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index 0fa211d35e4..f74df87058b 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -24,6 +24,8 @@ #include "internal.h" #include "pnfs.h" +#define NFSDBG_FACILITY NFSDBG_PAGECACHE + static struct kmem_cache *nfs_page_cachep; static bool nfs_pgarray_set(struct nfs_page_array *p, unsigned int pagecount) @@ -447,6 +449,27 @@ void nfs_pageio_init(struct nfs_pageio_descriptor *desc, } EXPORT_SYMBOL_GPL(nfs_pageio_init); +/** + * nfs_pgio_result - Basic pageio error handling + * @task: The task that ran + * @calldata: Pageio data to check + */ +void nfs_pgio_result(struct rpc_task *task, void *calldata) +{ + struct nfs_pgio_data *data = calldata; + struct inode *inode = data->header->inode; + + dprintk("NFS: %s: %5u, (status %d)\n", __func__, + task->tk_pid, task->tk_status); + + if (data->header->rw_ops->rw_done(task, data, inode) != 0) + return; + if (task->tk_status < 0) + nfs_set_pgio_error(data->header, task->tk_status, data->args.offset); + else + data->header->rw_ops->rw_result(task, data); +} + static bool nfs_match_open_context(const struct nfs_open_context *ctx1, const struct nfs_open_context *ctx2) { diff --git a/fs/nfs/read.c b/fs/nfs/read.c index cfa15e828dd..bc78bd248eb 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -388,15 +388,10 @@ static const struct nfs_pageio_ops nfs_pageio_read_ops = { * This is the callback from RPC telling us whether a reply was * received or some error occurred (timeout or socket shutdown). */ -int nfs_readpage_result(struct rpc_task *task, struct nfs_pgio_data *data) +static int nfs_readpage_done(struct rpc_task *task, struct nfs_pgio_data *data, + struct inode *inode) { - struct inode *inode = data->header->inode; - int status; - - dprintk("NFS: %s: %5u, (status %d)\n", __func__, task->tk_pid, - task->tk_status); - - status = NFS_PROTO(inode)->read_done(task, data); + int status = NFS_PROTO(inode)->read_done(task, data); if (status != 0) return status; @@ -429,17 +424,11 @@ static void nfs_readpage_retry(struct rpc_task *task, struct nfs_pgio_data *data rpc_restart_call_prepare(task); } -static void nfs_readpage_result_common(struct rpc_task *task, void *calldata) +static void nfs_readpage_result(struct rpc_task *task, struct nfs_pgio_data *data) { - struct nfs_pgio_data *data = calldata; struct nfs_pgio_header *hdr = data->header; - /* Note the only returns of nfs_readpage_result are 0 and -EAGAIN */ - if (nfs_readpage_result(task, data) != 0) - return; - if (task->tk_status < 0) - nfs_set_pgio_error(hdr, task->tk_status, data->args.offset); - else if (data->res.eof) { + if (data->res.eof) { loff_t bound; bound = data->args.offset + data->res.count; @@ -456,7 +445,7 @@ static void nfs_readpage_result_common(struct rpc_task *task, void *calldata) static const struct rpc_call_ops nfs_read_common_ops = { .rpc_call_prepare = nfs_pgio_prepare, - .rpc_call_done = nfs_readpage_result_common, + .rpc_call_done = nfs_pgio_result, .rpc_release = nfs_pgio_release, }; @@ -625,4 +614,6 @@ static const struct nfs_rw_ops nfs_rw_read_ops = { .rw_mode = FMODE_READ, .rw_alloc_header = nfs_readhdr_alloc, .rw_free_header = nfs_readhdr_free, + .rw_done = nfs_readpage_done, + .rw_result = nfs_readpage_result, }; diff --git a/fs/nfs/write.c b/fs/nfs/write.c index ae799c96ec2..1d3e1d75c8c 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -1255,20 +1255,6 @@ void nfs_commit_prepare(struct rpc_task *task, void *calldata) NFS_PROTO(data->inode)->commit_rpc_prepare(task, data); } -/* - * Handle a write reply that flushes a whole page. - * - * FIXME: There is an inherent race with invalidate_inode_pages and - * writebacks since the page->count is kept > 1 for as long - * as the page has a write request pending. - */ -static void nfs_writeback_done_common(struct rpc_task *task, void *calldata) -{ - struct nfs_pgio_data *data = calldata; - - nfs_writeback_done(task, data); -} - static void nfs_writeback_release_common(struct nfs_pgio_data *data) { struct nfs_pgio_header *hdr = data->header; @@ -1288,7 +1274,7 @@ static void nfs_writeback_release_common(struct nfs_pgio_data *data) static const struct rpc_call_ops nfs_write_common_ops = { .rpc_call_prepare = nfs_pgio_prepare, - .rpc_call_done = nfs_writeback_done_common, + .rpc_call_done = nfs_pgio_result, .rpc_release = nfs_pgio_release, }; @@ -1320,16 +1306,11 @@ static int nfs_should_remove_suid(const struct inode *inode) /* * This function is called when the WRITE call is complete. */ -void nfs_writeback_done(struct rpc_task *task, struct nfs_pgio_data *data) +static int nfs_writeback_done(struct rpc_task *task, struct nfs_pgio_data *data, + struct inode *inode) { - struct nfs_pgio_args *argp = &data->args; - struct nfs_pgio_res *resp = &data->res; - struct inode *inode = data->header->inode; int status; - dprintk("NFS: %5u nfs_writeback_done (status %d)\n", - task->tk_pid, task->tk_status); - /* * ->write_done will attempt to use post-op attributes to detect * conflicting writes by other clients. A strict interpretation @@ -1339,11 +1320,11 @@ void nfs_writeback_done(struct rpc_task *task, struct nfs_pgio_data *data) */ status = NFS_PROTO(inode)->write_done(task, data); if (status != 0) - return; - nfs_add_stats(inode, NFSIOS_SERVERWRITTENBYTES, resp->count); + return status; + nfs_add_stats(inode, NFSIOS_SERVERWRITTENBYTES, data->res.count); #if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4) - if (resp->verf->committed < argp->stable && task->tk_status >= 0) { + if (data->res.verf->committed < data->args.stable && task->tk_status >= 0) { /* We tried a write call, but the server did not * commit data to stable storage even though we * requested it. @@ -1359,25 +1340,31 @@ void nfs_writeback_done(struct rpc_task *task, struct nfs_pgio_data *data) dprintk("NFS: faulty NFS server %s:" " (committed = %d) != (stable = %d)\n", NFS_SERVER(inode)->nfs_client->cl_hostname, - resp->verf->committed, argp->stable); + data->res.verf->committed, data->args.stable); complain = jiffies + 300 * HZ; } } #endif - if (task->tk_status < 0) { - nfs_set_pgio_error(data->header, task->tk_status, argp->offset); - return; - } /* Deal with the suid/sgid bit corner case */ if (nfs_should_remove_suid(inode)) nfs_mark_for_revalidate(inode); + return 0; +} + +/* + * This function is called when the WRITE call is complete. + */ +static void nfs_writeback_result(struct rpc_task *task, struct nfs_pgio_data *data) +{ + struct nfs_pgio_args *argp = &data->args; + struct nfs_pgio_res *resp = &data->res; if (resp->count < argp->count) { static unsigned long complain; /* This a short write! */ - nfs_inc_stats(inode, NFSIOS_SHORTWRITE); + nfs_inc_stats(data->header->inode, NFSIOS_SHORTWRITE); /* Has the server at least made some progress? */ if (resp->count == 0) { @@ -1911,4 +1898,6 @@ static const struct nfs_rw_ops nfs_rw_write_ops = { .rw_alloc_header = nfs_writehdr_alloc, .rw_free_header = nfs_writehdr_free, .rw_release = nfs_writeback_release_common, + .rw_done = nfs_writeback_done, + .rw_result = nfs_writeback_result, }; diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index 7e0db561d82..919576b8e2c 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -520,7 +520,6 @@ extern int nfs_writepage(struct page *page, struct writeback_control *wbc); extern int nfs_writepages(struct address_space *, struct writeback_control *); extern int nfs_flush_incompatible(struct file *file, struct page *page); extern int nfs_updatepage(struct file *, struct page *, unsigned int, unsigned int); -extern void nfs_writeback_done(struct rpc_task *, struct nfs_pgio_data *); /* * Try to write back everything synchronously (but check the @@ -553,7 +552,6 @@ nfs_have_writebacks(struct inode *inode) extern int nfs_readpage(struct file *, struct page *); extern int nfs_readpages(struct file *, struct address_space *, struct list_head *, unsigned); -extern int nfs_readpage_result(struct rpc_task *, struct nfs_pgio_data *); extern int nfs_readpage_async(struct nfs_open_context *, struct inode *, struct page *); diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h index da00a4d6f47..01aa29c5ec4 100644 --- a/include/linux/nfs_page.h +++ b/include/linux/nfs_page.h @@ -57,6 +57,8 @@ struct nfs_rw_ops { struct nfs_rw_header *(*rw_alloc_header)(void); void (*rw_free_header)(struct nfs_rw_header *); void (*rw_release)(struct nfs_pgio_data *); + int (*rw_done)(struct rpc_task *, struct nfs_pgio_data *, struct inode *); + void (*rw_result)(struct rpc_task *, struct nfs_pgio_data *); }; struct nfs_pageio_descriptor { -- cgit v1.2.3-70-g09d2 From 6f92fa4581f1c26562f80dc686b3c9ea76556911 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Tue, 6 May 2014 09:12:33 -0400 Subject: NFS: Create a common rpc_call_ops struct The read and write paths set up this struct in exactly the same way, so create a single shared struct. Signed-off-by: Anna Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/internal.h | 4 +--- fs/nfs/pagelist.c | 11 ++++++++--- fs/nfs/read.c | 11 ++--------- fs/nfs/write.c | 11 ++--------- 4 files changed, 13 insertions(+), 24 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 7c0ae364bda..e34220f1016 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -237,13 +237,11 @@ extern void nfs_pgheader_init(struct nfs_pageio_descriptor *desc, void nfs_set_pgio_error(struct nfs_pgio_header *hdr, int error, loff_t pos); int nfs_iocounter_wait(struct nfs_io_counter *c); +extern const struct rpc_call_ops nfs_pgio_common_ops; struct nfs_rw_header *nfs_rw_header_alloc(const struct nfs_rw_ops *); void nfs_rw_header_free(struct nfs_pgio_header *); struct nfs_pgio_data *nfs_pgio_data_alloc(struct nfs_pgio_header *, unsigned int); void nfs_pgio_data_release(struct nfs_pgio_data *); -void nfs_pgio_prepare(struct rpc_task *, void *); -void nfs_pgio_release(void *); -void nfs_pgio_result(struct rpc_task *, void *); static inline void nfs_iocounter_init(struct nfs_io_counter *c) { diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index f74df87058b..aabff78dc6e 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -393,7 +393,7 @@ EXPORT_SYMBOL_GPL(nfs_pgio_data_release); * @task: The current task * @calldata: pageio data to prepare */ -void nfs_pgio_prepare(struct rpc_task *task, void *calldata) +static void nfs_pgio_prepare(struct rpc_task *task, void *calldata) { struct nfs_pgio_data *data = calldata; int err; @@ -406,7 +406,7 @@ void nfs_pgio_prepare(struct rpc_task *task, void *calldata) * nfs_pgio_release - Release pageio data * @calldata: The pageio data to release */ -void nfs_pgio_release(void *calldata) +static void nfs_pgio_release(void *calldata) { struct nfs_pgio_data *data = calldata; if (data->header->rw_ops->rw_release) @@ -454,7 +454,7 @@ EXPORT_SYMBOL_GPL(nfs_pageio_init); * @task: The task that ran * @calldata: Pageio data to check */ -void nfs_pgio_result(struct rpc_task *task, void *calldata) +static void nfs_pgio_result(struct rpc_task *task, void *calldata) { struct nfs_pgio_data *data = calldata; struct inode *inode = data->header->inode; @@ -677,3 +677,8 @@ void nfs_destroy_nfspagecache(void) kmem_cache_destroy(nfs_page_cachep); } +const struct rpc_call_ops nfs_pgio_common_ops = { + .rpc_call_prepare = nfs_pgio_prepare, + .rpc_call_done = nfs_pgio_result, + .rpc_release = nfs_pgio_release, +}; diff --git a/fs/nfs/read.c b/fs/nfs/read.c index bc78bd248eb..a33490c0899 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -29,7 +29,6 @@ #define NFSDBG_FACILITY NFSDBG_PAGECACHE static const struct nfs_pageio_ops nfs_pageio_read_ops; -static const struct rpc_call_ops nfs_read_common_ops; static const struct nfs_pgio_completion_ops nfs_async_read_completion_ops; static const struct nfs_rw_ops nfs_rw_read_ops; @@ -314,7 +313,7 @@ static int nfs_pagein_multi(struct nfs_pageio_descriptor *desc, nfs_list_remove_request(req); nfs_list_add_request(req, &hdr->pages); - desc->pg_rpc_callops = &nfs_read_common_ops; + desc->pg_rpc_callops = &nfs_pgio_common_ops; return 0; } @@ -343,7 +342,7 @@ static int nfs_pagein_one(struct nfs_pageio_descriptor *desc, nfs_read_rpcsetup(data, desc->pg_count, 0); list_add(&data->list, &hdr->rpc_list); - desc->pg_rpc_callops = &nfs_read_common_ops; + desc->pg_rpc_callops = &nfs_pgio_common_ops; return 0; } @@ -443,12 +442,6 @@ static void nfs_readpage_result(struct rpc_task *task, struct nfs_pgio_data *dat nfs_readpage_retry(task, data); } -static const struct rpc_call_ops nfs_read_common_ops = { - .rpc_call_prepare = nfs_pgio_prepare, - .rpc_call_done = nfs_pgio_result, - .rpc_release = nfs_pgio_release, -}; - /* * Read a page over NFS. * We read the page synchronously in the following case: diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 1d3e1d75c8c..d877f15fb31 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -42,7 +42,6 @@ * Local function declarations */ static void nfs_redirty_request(struct nfs_page *req); -static const struct rpc_call_ops nfs_write_common_ops; static const struct rpc_call_ops nfs_commit_ops; static const struct nfs_pgio_completion_ops nfs_async_write_completion_ops; static const struct nfs_commit_completion_ops nfs_commit_completion_ops; @@ -1138,7 +1137,7 @@ static int nfs_flush_multi(struct nfs_pageio_descriptor *desc, } while (nbytes != 0); nfs_list_remove_request(req); nfs_list_add_request(req, &hdr->pages); - desc->pg_rpc_callops = &nfs_write_common_ops; + desc->pg_rpc_callops = &nfs_pgio_common_ops; return 0; } @@ -1182,7 +1181,7 @@ static int nfs_flush_one(struct nfs_pageio_descriptor *desc, /* Set up the argument struct */ nfs_write_rpcsetup(data, desc->pg_count, 0, desc->pg_ioflags, &cinfo); list_add(&data->list, &hdr->rpc_list); - desc->pg_rpc_callops = &nfs_write_common_ops; + desc->pg_rpc_callops = &nfs_pgio_common_ops; return 0; } @@ -1272,12 +1271,6 @@ static void nfs_writeback_release_common(struct nfs_pgio_data *data) } } -static const struct rpc_call_ops nfs_write_common_ops = { - .rpc_call_prepare = nfs_pgio_prepare, - .rpc_call_done = nfs_pgio_result, - .rpc_release = nfs_pgio_release, -}; - /* * Special version of should_remove_suid() that ignores capabilities. */ -- cgit v1.2.3-70-g09d2 From ce59515c1484d3a01bc2f3e7043dc488d25efe34 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Tue, 6 May 2014 09:12:34 -0400 Subject: NFS: Create a common rpcsetup function for reads and writes Write adds a little bit of code dealing with flush flags, but since "how" will always be 0 when reading we can share the code. Signed-off-by: Anna Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/internal.h | 3 +++ fs/nfs/pagelist.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ fs/nfs/read.c | 26 ++------------------------ fs/nfs/write.c | 46 ++++------------------------------------------ 4 files changed, 53 insertions(+), 66 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index e34220f1016..519864b3296 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -242,6 +242,8 @@ struct nfs_rw_header *nfs_rw_header_alloc(const struct nfs_rw_ops *); void nfs_rw_header_free(struct nfs_pgio_header *); struct nfs_pgio_data *nfs_pgio_data_alloc(struct nfs_pgio_header *, unsigned int); void nfs_pgio_data_release(struct nfs_pgio_data *); +void nfs_pgio_rpcsetup(struct nfs_pgio_data *, unsigned int, unsigned int, int, + struct nfs_commit_info *); static inline void nfs_iocounter_init(struct nfs_io_counter *c) { @@ -446,6 +448,7 @@ extern void nfs_init_commit(struct nfs_commit_data *data, struct nfs_commit_info *cinfo); int nfs_scan_commit_list(struct list_head *src, struct list_head *dst, struct nfs_commit_info *cinfo, int max); +unsigned long nfs_reqs_to_commit(struct nfs_commit_info *); int nfs_scan_commit(struct inode *inode, struct list_head *dst, struct nfs_commit_info *cinfo); void nfs_mark_request_commit(struct nfs_page *req, diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index aabff78dc6e..0ccd9511696 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -388,6 +388,50 @@ void nfs_pgio_data_release(struct nfs_pgio_data *data) } EXPORT_SYMBOL_GPL(nfs_pgio_data_release); +/** + * nfs_pgio_rpcsetup - Set up arguments for a pageio call + * @data: The pageio data + * @count: Number of bytes to read + * @offset: Initial offset + * @how: How to commit data (writes only) + * @cinfo: Commit information for the call (writes only) + */ +void nfs_pgio_rpcsetup(struct nfs_pgio_data *data, + unsigned int count, unsigned int offset, + int how, struct nfs_commit_info *cinfo) +{ + struct nfs_page *req = data->header->req; + + /* Set up the RPC argument and reply structs + * NB: take care not to mess about with data->commit et al. */ + + data->args.fh = NFS_FH(data->header->inode); + data->args.offset = req_offset(req) + offset; + /* pnfs_set_layoutcommit needs this */ + data->mds_offset = data->args.offset; + data->args.pgbase = req->wb_pgbase + offset; + data->args.pages = data->pages.pagevec; + data->args.count = count; + data->args.context = get_nfs_open_context(req->wb_context); + data->args.lock_context = req->wb_lock_context; + data->args.stable = NFS_UNSTABLE; + switch (how & (FLUSH_STABLE | FLUSH_COND_STABLE)) { + case 0: + break; + case FLUSH_COND_STABLE: + if (nfs_reqs_to_commit(cinfo)) + break; + default: + data->args.stable = NFS_FILE_SYNC; + } + + data->res.fattr = &data->fattr; + data->res.count = count; + data->res.eof = 0; + data->res.verf = &data->verf; + nfs_fattr_init(&data->fattr); +} + /** * nfs_pgio_prepare - Prepare pageio data to go over the wire * @task: The current task diff --git a/fs/nfs/read.c b/fs/nfs/read.c index a33490c0899..0c88c60fbee 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -192,28 +192,6 @@ int nfs_initiate_read(struct rpc_clnt *clnt, } EXPORT_SYMBOL_GPL(nfs_initiate_read); -/* - * Set up the NFS read request struct - */ -static void nfs_read_rpcsetup(struct nfs_pgio_data *data, - unsigned int count, unsigned int offset) -{ - struct nfs_page *req = data->header->req; - - data->args.fh = NFS_FH(data->header->inode); - data->args.offset = req_offset(req) + offset; - data->args.pgbase = req->wb_pgbase + offset; - data->args.pages = data->pages.pagevec; - data->args.count = count; - data->args.context = get_nfs_open_context(req->wb_context); - data->args.lock_context = req->wb_lock_context; - - data->res.fattr = &data->fattr; - data->res.count = count; - data->res.eof = 0; - nfs_fattr_init(&data->fattr); -} - static int nfs_do_read(struct nfs_pgio_data *data, const struct rpc_call_ops *call_ops) { @@ -305,7 +283,7 @@ static int nfs_pagein_multi(struct nfs_pageio_descriptor *desc, return -ENOMEM; } data->pages.pagevec[0] = page; - nfs_read_rpcsetup(data, len, offset); + nfs_pgio_rpcsetup(data, len, offset, 0, NULL); list_add(&data->list, &hdr->rpc_list); nbytes -= len; offset += len; @@ -340,7 +318,7 @@ static int nfs_pagein_one(struct nfs_pageio_descriptor *desc, *pages++ = req->wb_page; } - nfs_read_rpcsetup(data, desc->pg_count, 0); + nfs_pgio_rpcsetup(data, desc->pg_count, 0, 0, NULL); list_add(&data->list, &hdr->rpc_list); desc->pg_rpc_callops = &nfs_pgio_common_ops; return 0; diff --git a/fs/nfs/write.c b/fs/nfs/write.c index d877f15fb31..0d367aa8781 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -603,7 +603,7 @@ out: } #if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4) -static unsigned long +unsigned long nfs_reqs_to_commit(struct nfs_commit_info *cinfo) { return cinfo->mds->ncommit; @@ -660,7 +660,7 @@ nfs_scan_commit(struct inode *inode, struct list_head *dst, } #else -static unsigned long nfs_reqs_to_commit(struct nfs_commit_info *cinfo) +unsigned long nfs_reqs_to_commit(struct nfs_commit_info *cinfo) { return 0; } @@ -987,44 +987,6 @@ out: } EXPORT_SYMBOL_GPL(nfs_initiate_write); -/* - * Set up the argument/result storage required for the RPC call. - */ -static void nfs_write_rpcsetup(struct nfs_pgio_data *data, - unsigned int count, unsigned int offset, - int how, struct nfs_commit_info *cinfo) -{ - struct nfs_page *req = data->header->req; - - /* Set up the RPC argument and reply structs - * NB: take care not to mess about with data->commit et al. */ - - data->args.fh = NFS_FH(data->header->inode); - data->args.offset = req_offset(req) + offset; - /* pnfs_set_layoutcommit needs this */ - data->mds_offset = data->args.offset; - data->args.pgbase = req->wb_pgbase + offset; - data->args.pages = data->pages.pagevec; - data->args.count = count; - data->args.context = get_nfs_open_context(req->wb_context); - data->args.lock_context = req->wb_lock_context; - data->args.stable = NFS_UNSTABLE; - switch (how & (FLUSH_STABLE | FLUSH_COND_STABLE)) { - case 0: - break; - case FLUSH_COND_STABLE: - if (nfs_reqs_to_commit(cinfo)) - break; - default: - data->args.stable = NFS_FILE_SYNC; - } - - data->res.fattr = &data->fattr; - data->res.count = count; - data->res.verf = &data->verf; - nfs_fattr_init(&data->fattr); -} - static int nfs_do_write(struct nfs_pgio_data *data, const struct rpc_call_ops *call_ops, int how) @@ -1129,7 +1091,7 @@ static int nfs_flush_multi(struct nfs_pageio_descriptor *desc, return -ENOMEM; } data->pages.pagevec[0] = page; - nfs_write_rpcsetup(data, len, offset, desc->pg_ioflags, &cinfo); + nfs_pgio_rpcsetup(data, len, offset, desc->pg_ioflags, &cinfo); list_add(&data->list, &hdr->rpc_list); requests++; nbytes -= len; @@ -1179,7 +1141,7 @@ static int nfs_flush_one(struct nfs_pageio_descriptor *desc, desc->pg_ioflags &= ~FLUSH_COND_STABLE; /* Set up the argument struct */ - nfs_write_rpcsetup(data, desc->pg_count, 0, desc->pg_ioflags, &cinfo); + nfs_pgio_rpcsetup(data, desc->pg_count, 0, desc->pg_ioflags, &cinfo); list_add(&data->list, &hdr->rpc_list); desc->pg_rpc_callops = &nfs_pgio_common_ops; return 0; -- cgit v1.2.3-70-g09d2 From 844c9e691d8723853ca8f2de0207683538645824 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Tue, 6 May 2014 09:12:35 -0400 Subject: NFS: Create a common pgio_error function At this point, the read and write versions of this function look identical so both should use the same function. Signed-off-by: Anna Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/internal.h | 1 + fs/nfs/pagelist.c | 20 ++++++++++++++++++++ fs/nfs/read.c | 25 ++++--------------------- fs/nfs/write.c | 25 ++++--------------------- 4 files changed, 29 insertions(+), 42 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 519864b3296..a4b9e754756 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -242,6 +242,7 @@ struct nfs_rw_header *nfs_rw_header_alloc(const struct nfs_rw_ops *); void nfs_rw_header_free(struct nfs_pgio_header *); struct nfs_pgio_data *nfs_pgio_data_alloc(struct nfs_pgio_header *, unsigned int); void nfs_pgio_data_release(struct nfs_pgio_data *); +int nfs_pgio_error(struct nfs_pageio_descriptor *, struct nfs_pgio_header *); void nfs_pgio_rpcsetup(struct nfs_pgio_data *, unsigned int, unsigned int, int, struct nfs_commit_info *); diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index 0ccd9511696..b0a98daae14 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -446,6 +446,26 @@ static void nfs_pgio_prepare(struct rpc_task *task, void *calldata) rpc_exit(task, err); } +/** + * nfs_pgio_error - Clean up from a pageio error + * @desc: IO descriptor + * @hdr: pageio header + */ +int nfs_pgio_error(struct nfs_pageio_descriptor *desc, + struct nfs_pgio_header *hdr) +{ + struct nfs_pgio_data *data; + + set_bit(NFS_IOHDR_REDO, &hdr->flags); + while (!list_empty(&hdr->rpc_list)) { + data = list_first_entry(&hdr->rpc_list, struct nfs_pgio_data, list); + list_del(&data->list); + nfs_pgio_data_release(data); + } + desc->pg_completion_ops->error_cleanup(&desc->pg_list); + return -ENOMEM; +} + /** * nfs_pgio_release - Release pageio data * @calldata: The pageio data to release diff --git a/fs/nfs/read.c b/fs/nfs/read.c index 0c88c60fbee..64f8eefec76 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -237,19 +237,6 @@ static const struct nfs_pgio_completion_ops nfs_async_read_completion_ops = { .completion = nfs_read_completion, }; -static void nfs_pagein_error(struct nfs_pageio_descriptor *desc, - struct nfs_pgio_header *hdr) -{ - set_bit(NFS_IOHDR_REDO, &hdr->flags); - while (!list_empty(&hdr->rpc_list)) { - struct nfs_pgio_data *data = list_first_entry(&hdr->rpc_list, - struct nfs_pgio_data, list); - list_del(&data->list); - nfs_pgio_data_release(data); - } - desc->pg_completion_ops->error_cleanup(&desc->pg_list); -} - /* * Generate multiple requests to fill a single page. * @@ -278,10 +265,8 @@ static int nfs_pagein_multi(struct nfs_pageio_descriptor *desc, size_t len = min(nbytes,rsize); data = nfs_pgio_data_alloc(hdr, 1); - if (!data) { - nfs_pagein_error(desc, hdr); - return -ENOMEM; - } + if (!data) + return nfs_pgio_error(desc, hdr); data->pages.pagevec[0] = page; nfs_pgio_rpcsetup(data, len, offset, 0, NULL); list_add(&data->list, &hdr->rpc_list); @@ -305,10 +290,8 @@ static int nfs_pagein_one(struct nfs_pageio_descriptor *desc, data = nfs_pgio_data_alloc(hdr, nfs_page_array_len(desc->pg_base, desc->pg_count)); - if (!data) { - nfs_pagein_error(desc, hdr); - return -ENOMEM; - } + if (!data) + return nfs_pgio_error(desc, hdr); pages = data->pages.pagevec; while (!list_empty(head)) { diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 0d367aa8781..02d088b1d8e 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -1044,19 +1044,6 @@ static const struct nfs_pgio_completion_ops nfs_async_write_completion_ops = { .completion = nfs_write_completion, }; -static void nfs_flush_error(struct nfs_pageio_descriptor *desc, - struct nfs_pgio_header *hdr) -{ - set_bit(NFS_IOHDR_REDO, &hdr->flags); - while (!list_empty(&hdr->rpc_list)) { - struct nfs_pgio_data *data = list_first_entry(&hdr->rpc_list, - struct nfs_pgio_data, list); - list_del(&data->list); - nfs_pgio_data_release(data); - } - desc->pg_completion_ops->error_cleanup(&desc->pg_list); -} - /* * Generate multiple small requests to write out a single * contiguous dirty area on one page. @@ -1086,10 +1073,8 @@ static int nfs_flush_multi(struct nfs_pageio_descriptor *desc, size_t len = min(nbytes, wsize); data = nfs_pgio_data_alloc(hdr, 1); - if (!data) { - nfs_flush_error(desc, hdr); - return -ENOMEM; - } + if (!data) + return nfs_pgio_error(desc, hdr); data->pages.pagevec[0] = page; nfs_pgio_rpcsetup(data, len, offset, desc->pg_ioflags, &cinfo); list_add(&data->list, &hdr->rpc_list); @@ -1122,10 +1107,8 @@ static int nfs_flush_one(struct nfs_pageio_descriptor *desc, data = nfs_pgio_data_alloc(hdr, nfs_page_array_len(desc->pg_base, desc->pg_count)); - if (!data) { - nfs_flush_error(desc, hdr); - return -ENOMEM; - } + if (!data) + return nfs_pgio_error(desc, hdr); nfs_init_cinfo(&cinfo, desc->pg_inode, desc->pg_dreq); pages = data->pages.pagevec; -- cgit v1.2.3-70-g09d2 From ef2c488c073f4f0b3a200745dd8d608c01d69c39 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Tue, 6 May 2014 09:12:36 -0400 Subject: NFS: Create a generic_pgio function These functions are almost identical on both the read and write side. FLUSH_COND_STABLE will never be set for the read path, so leaving it in the generic code won't hurt anything. Signed-off-by: Anna Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/internal.h | 10 +----- fs/nfs/pagelist.c | 106 +++++++++++++++++++++++++++++++++++++++++++++++++++--- fs/nfs/pnfs.c | 4 +-- fs/nfs/read.c | 81 +---------------------------------------- fs/nfs/write.c | 97 +------------------------------------------------ 5 files changed, 106 insertions(+), 192 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index a4b9e754756..365cdb11d0d 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -237,14 +237,10 @@ extern void nfs_pgheader_init(struct nfs_pageio_descriptor *desc, void nfs_set_pgio_error(struct nfs_pgio_header *hdr, int error, loff_t pos); int nfs_iocounter_wait(struct nfs_io_counter *c); -extern const struct rpc_call_ops nfs_pgio_common_ops; struct nfs_rw_header *nfs_rw_header_alloc(const struct nfs_rw_ops *); void nfs_rw_header_free(struct nfs_pgio_header *); -struct nfs_pgio_data *nfs_pgio_data_alloc(struct nfs_pgio_header *, unsigned int); void nfs_pgio_data_release(struct nfs_pgio_data *); -int nfs_pgio_error(struct nfs_pageio_descriptor *, struct nfs_pgio_header *); -void nfs_pgio_rpcsetup(struct nfs_pgio_data *, unsigned int, unsigned int, int, - struct nfs_commit_info *); +int nfs_generic_pgio(struct nfs_pageio_descriptor *, struct nfs_pgio_header *); static inline void nfs_iocounter_init(struct nfs_io_counter *c) { @@ -410,8 +406,6 @@ extern int nfs_initiate_read(struct rpc_clnt *clnt, struct nfs_pgio_data *data, const struct rpc_call_ops *call_ops, int flags); extern void nfs_read_prepare(struct rpc_task *task, void *calldata); -extern int nfs_generic_pagein(struct nfs_pageio_descriptor *desc, - struct nfs_pgio_header *hdr); extern void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio); /* super.c */ @@ -429,8 +423,6 @@ int nfs_remount(struct super_block *sb, int *flags, char *raw_data); extern void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, struct inode *inode, int ioflags, bool force_mds, const struct nfs_pgio_completion_ops *compl_ops); -extern int nfs_generic_flush(struct nfs_pageio_descriptor *desc, - struct nfs_pgio_header *hdr); extern void nfs_pageio_reset_write_mds(struct nfs_pageio_descriptor *pgio); extern void nfs_commit_free(struct nfs_commit_data *p); extern int nfs_initiate_write(struct rpc_clnt *clnt, diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index b0a98daae14..d8d25a4deb8 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -27,6 +27,7 @@ #define NFSDBG_FACILITY NFSDBG_PAGECACHE static struct kmem_cache *nfs_page_cachep; +static const struct rpc_call_ops nfs_pgio_common_ops; static bool nfs_pgarray_set(struct nfs_page_array *p, unsigned int pagecount) { @@ -338,8 +339,8 @@ EXPORT_SYMBOL_GPL(nfs_rw_header_free); * @hdr: The header making a request * @pagecount: Number of pages to create */ -struct nfs_pgio_data *nfs_pgio_data_alloc(struct nfs_pgio_header *hdr, - unsigned int pagecount) +static struct nfs_pgio_data *nfs_pgio_data_alloc(struct nfs_pgio_header *hdr, + unsigned int pagecount) { struct nfs_pgio_data *data, *prealloc; @@ -396,7 +397,7 @@ EXPORT_SYMBOL_GPL(nfs_pgio_data_release); * @how: How to commit data (writes only) * @cinfo: Commit information for the call (writes only) */ -void nfs_pgio_rpcsetup(struct nfs_pgio_data *data, +static void nfs_pgio_rpcsetup(struct nfs_pgio_data *data, unsigned int count, unsigned int offset, int how, struct nfs_commit_info *cinfo) { @@ -451,7 +452,7 @@ static void nfs_pgio_prepare(struct rpc_task *task, void *calldata) * @desc: IO descriptor * @hdr: pageio header */ -int nfs_pgio_error(struct nfs_pageio_descriptor *desc, +static int nfs_pgio_error(struct nfs_pageio_descriptor *desc, struct nfs_pgio_header *hdr) { struct nfs_pgio_data *data; @@ -534,6 +535,101 @@ static void nfs_pgio_result(struct rpc_task *task, void *calldata) data->header->rw_ops->rw_result(task, data); } +/* + * Generate multiple small requests to read or write a single + * contiguous dirty on one page. + */ +static int nfs_pgio_multi(struct nfs_pageio_descriptor *desc, + struct nfs_pgio_header *hdr) +{ + struct nfs_page *req = hdr->req; + struct page *page = req->wb_page; + struct nfs_pgio_data *data; + size_t wsize = desc->pg_bsize, nbytes; + unsigned int offset; + int requests = 0; + struct nfs_commit_info cinfo; + + nfs_init_cinfo(&cinfo, desc->pg_inode, desc->pg_dreq); + + if ((desc->pg_ioflags & FLUSH_COND_STABLE) && + (desc->pg_moreio || nfs_reqs_to_commit(&cinfo) || + desc->pg_count > wsize)) + desc->pg_ioflags &= ~FLUSH_COND_STABLE; + + offset = 0; + nbytes = desc->pg_count; + do { + size_t len = min(nbytes, wsize); + + data = nfs_pgio_data_alloc(hdr, 1); + if (!data) + return nfs_pgio_error(desc, hdr); + data->pages.pagevec[0] = page; + nfs_pgio_rpcsetup(data, len, offset, desc->pg_ioflags, &cinfo); + list_add(&data->list, &hdr->rpc_list); + requests++; + nbytes -= len; + offset += len; + } while (nbytes != 0); + + nfs_list_remove_request(req); + nfs_list_add_request(req, &hdr->pages); + desc->pg_rpc_callops = &nfs_pgio_common_ops; + return 0; +} + +/* + * Create an RPC task for the given read or write request and kick it. + * The page must have been locked by the caller. + * + * It may happen that the page we're passed is not marked dirty. + * This is the case if nfs_updatepage detects a conflicting request + * that has been written but not committed. + */ +static int nfs_pgio_one(struct nfs_pageio_descriptor *desc, + struct nfs_pgio_header *hdr) +{ + struct nfs_page *req; + struct page **pages; + struct nfs_pgio_data *data; + struct list_head *head = &desc->pg_list; + struct nfs_commit_info cinfo; + + data = nfs_pgio_data_alloc(hdr, nfs_page_array_len(desc->pg_base, + desc->pg_count)); + if (!data) + return nfs_pgio_error(desc, hdr); + + nfs_init_cinfo(&cinfo, desc->pg_inode, desc->pg_dreq); + pages = data->pages.pagevec; + while (!list_empty(head)) { + req = nfs_list_entry(head->next); + nfs_list_remove_request(req); + nfs_list_add_request(req, &hdr->pages); + *pages++ = req->wb_page; + } + + if ((desc->pg_ioflags & FLUSH_COND_STABLE) && + (desc->pg_moreio || nfs_reqs_to_commit(&cinfo))) + desc->pg_ioflags &= ~FLUSH_COND_STABLE; + + /* Set up the argument struct */ + nfs_pgio_rpcsetup(data, desc->pg_count, 0, desc->pg_ioflags, &cinfo); + list_add(&data->list, &hdr->rpc_list); + desc->pg_rpc_callops = &nfs_pgio_common_ops; + return 0; +} + +int nfs_generic_pgio(struct nfs_pageio_descriptor *desc, + struct nfs_pgio_header *hdr) +{ + if (desc->pg_bsize < PAGE_CACHE_SIZE) + return nfs_pgio_multi(desc, hdr); + return nfs_pgio_one(desc, hdr); +} +EXPORT_SYMBOL_GPL(nfs_generic_pgio); + static bool nfs_match_open_context(const struct nfs_open_context *ctx1, const struct nfs_open_context *ctx2) { @@ -741,7 +837,7 @@ void nfs_destroy_nfspagecache(void) kmem_cache_destroy(nfs_page_cachep); } -const struct rpc_call_ops nfs_pgio_common_ops = { +static const struct rpc_call_ops nfs_pgio_common_ops = { .rpc_call_prepare = nfs_pgio_prepare, .rpc_call_done = nfs_pgio_result, .rpc_release = nfs_pgio_release, diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 54c84c128b2..0fe670189fd 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1607,7 +1607,7 @@ pnfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc) nfs_pgheader_init(desc, hdr, pnfs_writehdr_free); hdr->lseg = pnfs_get_lseg(desc->pg_lseg); atomic_inc(&hdr->refcnt); - ret = nfs_generic_flush(desc, hdr); + ret = nfs_generic_pgio(desc, hdr); if (ret != 0) { pnfs_put_lseg(desc->pg_lseg); desc->pg_lseg = NULL; @@ -1766,7 +1766,7 @@ pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc) nfs_pgheader_init(desc, hdr, pnfs_readhdr_free); hdr->lseg = pnfs_get_lseg(desc->pg_lseg); atomic_inc(&hdr->refcnt); - ret = nfs_generic_pagein(desc, hdr); + ret = nfs_generic_pgio(desc, hdr); if (ret != 0) { pnfs_put_lseg(desc->pg_lseg); desc->pg_lseg = NULL; diff --git a/fs/nfs/read.c b/fs/nfs/read.c index 64f8eefec76..4fcef82d78b 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -237,85 +237,6 @@ static const struct nfs_pgio_completion_ops nfs_async_read_completion_ops = { .completion = nfs_read_completion, }; -/* - * Generate multiple requests to fill a single page. - * - * We optimize to reduce the number of read operations on the wire. If we - * detect that we're reading a page, or an area of a page, that is past the - * end of file, we do not generate NFS read operations but just clear the - * parts of the page that would have come back zero from the server anyway. - * - * We rely on the cached value of i_size to make this determination; another - * client can fill pages on the server past our cached end-of-file, but we - * won't see the new data until our attribute cache is updated. This is more - * or less conventional NFS client behavior. - */ -static int nfs_pagein_multi(struct nfs_pageio_descriptor *desc, - struct nfs_pgio_header *hdr) -{ - struct nfs_page *req = hdr->req; - struct page *page = req->wb_page; - struct nfs_pgio_data *data; - size_t rsize = desc->pg_bsize, nbytes; - unsigned int offset; - - offset = 0; - nbytes = desc->pg_count; - do { - size_t len = min(nbytes,rsize); - - data = nfs_pgio_data_alloc(hdr, 1); - if (!data) - return nfs_pgio_error(desc, hdr); - data->pages.pagevec[0] = page; - nfs_pgio_rpcsetup(data, len, offset, 0, NULL); - list_add(&data->list, &hdr->rpc_list); - nbytes -= len; - offset += len; - } while (nbytes != 0); - - nfs_list_remove_request(req); - nfs_list_add_request(req, &hdr->pages); - desc->pg_rpc_callops = &nfs_pgio_common_ops; - return 0; -} - -static int nfs_pagein_one(struct nfs_pageio_descriptor *desc, - struct nfs_pgio_header *hdr) -{ - struct nfs_page *req; - struct page **pages; - struct nfs_pgio_data *data; - struct list_head *head = &desc->pg_list; - - data = nfs_pgio_data_alloc(hdr, nfs_page_array_len(desc->pg_base, - desc->pg_count)); - if (!data) - return nfs_pgio_error(desc, hdr); - - pages = data->pages.pagevec; - while (!list_empty(head)) { - req = nfs_list_entry(head->next); - nfs_list_remove_request(req); - nfs_list_add_request(req, &hdr->pages); - *pages++ = req->wb_page; - } - - nfs_pgio_rpcsetup(data, desc->pg_count, 0, 0, NULL); - list_add(&data->list, &hdr->rpc_list); - desc->pg_rpc_callops = &nfs_pgio_common_ops; - return 0; -} - -int nfs_generic_pagein(struct nfs_pageio_descriptor *desc, - struct nfs_pgio_header *hdr) -{ - if (desc->pg_bsize < PAGE_CACHE_SIZE) - return nfs_pagein_multi(desc, hdr); - return nfs_pagein_one(desc, hdr); -} -EXPORT_SYMBOL_GPL(nfs_generic_pagein); - static int nfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc) { struct nfs_rw_header *rhdr; @@ -330,7 +251,7 @@ static int nfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc) hdr = &rhdr->header; nfs_pgheader_init(desc, hdr, nfs_rw_header_free); atomic_inc(&hdr->refcnt); - ret = nfs_generic_pagein(desc, hdr); + ret = nfs_generic_pgio(desc, hdr); if (ret == 0) ret = nfs_do_multiple_reads(&hdr->rpc_list, desc->pg_rpc_callops); diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 02d088b1d8e..0e34c702419 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -1044,101 +1044,6 @@ static const struct nfs_pgio_completion_ops nfs_async_write_completion_ops = { .completion = nfs_write_completion, }; -/* - * Generate multiple small requests to write out a single - * contiguous dirty area on one page. - */ -static int nfs_flush_multi(struct nfs_pageio_descriptor *desc, - struct nfs_pgio_header *hdr) -{ - struct nfs_page *req = hdr->req; - struct page *page = req->wb_page; - struct nfs_pgio_data *data; - size_t wsize = desc->pg_bsize, nbytes; - unsigned int offset; - int requests = 0; - struct nfs_commit_info cinfo; - - nfs_init_cinfo(&cinfo, desc->pg_inode, desc->pg_dreq); - - if ((desc->pg_ioflags & FLUSH_COND_STABLE) && - (desc->pg_moreio || nfs_reqs_to_commit(&cinfo) || - desc->pg_count > wsize)) - desc->pg_ioflags &= ~FLUSH_COND_STABLE; - - - offset = 0; - nbytes = desc->pg_count; - do { - size_t len = min(nbytes, wsize); - - data = nfs_pgio_data_alloc(hdr, 1); - if (!data) - return nfs_pgio_error(desc, hdr); - data->pages.pagevec[0] = page; - nfs_pgio_rpcsetup(data, len, offset, desc->pg_ioflags, &cinfo); - list_add(&data->list, &hdr->rpc_list); - requests++; - nbytes -= len; - offset += len; - } while (nbytes != 0); - nfs_list_remove_request(req); - nfs_list_add_request(req, &hdr->pages); - desc->pg_rpc_callops = &nfs_pgio_common_ops; - return 0; -} - -/* - * Create an RPC task for the given write request and kick it. - * The page must have been locked by the caller. - * - * It may happen that the page we're passed is not marked dirty. - * This is the case if nfs_updatepage detects a conflicting request - * that has been written but not committed. - */ -static int nfs_flush_one(struct nfs_pageio_descriptor *desc, - struct nfs_pgio_header *hdr) -{ - struct nfs_page *req; - struct page **pages; - struct nfs_pgio_data *data; - struct list_head *head = &desc->pg_list; - struct nfs_commit_info cinfo; - - data = nfs_pgio_data_alloc(hdr, nfs_page_array_len(desc->pg_base, - desc->pg_count)); - if (!data) - return nfs_pgio_error(desc, hdr); - - nfs_init_cinfo(&cinfo, desc->pg_inode, desc->pg_dreq); - pages = data->pages.pagevec; - while (!list_empty(head)) { - req = nfs_list_entry(head->next); - nfs_list_remove_request(req); - nfs_list_add_request(req, &hdr->pages); - *pages++ = req->wb_page; - } - - if ((desc->pg_ioflags & FLUSH_COND_STABLE) && - (desc->pg_moreio || nfs_reqs_to_commit(&cinfo))) - desc->pg_ioflags &= ~FLUSH_COND_STABLE; - - /* Set up the argument struct */ - nfs_pgio_rpcsetup(data, desc->pg_count, 0, desc->pg_ioflags, &cinfo); - list_add(&data->list, &hdr->rpc_list); - desc->pg_rpc_callops = &nfs_pgio_common_ops; - return 0; -} - -int nfs_generic_flush(struct nfs_pageio_descriptor *desc, - struct nfs_pgio_header *hdr) -{ - if (desc->pg_bsize < PAGE_CACHE_SIZE) - return nfs_flush_multi(desc, hdr); - return nfs_flush_one(desc, hdr); -} -EXPORT_SYMBOL_GPL(nfs_generic_flush); - static int nfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc) { struct nfs_rw_header *whdr; @@ -1153,7 +1058,7 @@ static int nfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc) hdr = &whdr->header; nfs_pgheader_init(desc, hdr, nfs_rw_header_free); atomic_inc(&hdr->refcnt); - ret = nfs_generic_flush(desc, hdr); + ret = nfs_generic_pgio(desc, hdr); if (ret == 0) ret = nfs_do_multiple_writes(&hdr->rpc_list, desc->pg_rpc_callops, -- cgit v1.2.3-70-g09d2 From 1ed26f33008e954a8e91d26f97d4380dea8145db Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Tue, 6 May 2014 09:12:37 -0400 Subject: NFS: Create a common initiate_pgio() function Most of this code is the same for both the read and write paths, so combine everything and use the rw_ops when necessary. Signed-off-by: Anna Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/internal.h | 9 ++------ fs/nfs/nfs4filelayout.c | 6 +++--- fs/nfs/pagelist.c | 46 ++++++++++++++++++++++++++++++++++++++++ fs/nfs/read.c | 42 ++++++------------------------------ fs/nfs/write.c | 55 ++++++------------------------------------------ include/linux/nfs_page.h | 2 ++ 6 files changed, 66 insertions(+), 94 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 365cdb11d0d..be4f2a7e917 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -241,6 +241,8 @@ struct nfs_rw_header *nfs_rw_header_alloc(const struct nfs_rw_ops *); void nfs_rw_header_free(struct nfs_pgio_header *); void nfs_pgio_data_release(struct nfs_pgio_data *); int nfs_generic_pgio(struct nfs_pageio_descriptor *, struct nfs_pgio_header *); +int nfs_initiate_pgio(struct rpc_clnt *, struct nfs_pgio_data *, + const struct rpc_call_ops *, int, int); static inline void nfs_iocounter_init(struct nfs_io_counter *c) { @@ -402,9 +404,6 @@ struct nfs_pgio_completion_ops; extern void nfs_pageio_init_read(struct nfs_pageio_descriptor *pgio, struct inode *inode, bool force_mds, const struct nfs_pgio_completion_ops *compl_ops); -extern int nfs_initiate_read(struct rpc_clnt *clnt, - struct nfs_pgio_data *data, - const struct rpc_call_ops *call_ops, int flags); extern void nfs_read_prepare(struct rpc_task *task, void *calldata); extern void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio); @@ -425,10 +424,6 @@ extern void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, const struct nfs_pgio_completion_ops *compl_ops); extern void nfs_pageio_reset_write_mds(struct nfs_pageio_descriptor *pgio); extern void nfs_commit_free(struct nfs_commit_data *p); -extern int nfs_initiate_write(struct rpc_clnt *clnt, - struct nfs_pgio_data *data, - const struct rpc_call_ops *call_ops, - int how, int flags); extern void nfs_write_prepare(struct rpc_task *task, void *calldata); extern void nfs_commit_prepare(struct rpc_task *task, void *calldata); extern int nfs_initiate_commit(struct rpc_clnt *clnt, diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c index e6936147ad9..7954e16a6d8 100644 --- a/fs/nfs/nfs4filelayout.c +++ b/fs/nfs/nfs4filelayout.c @@ -568,8 +568,8 @@ filelayout_read_pagelist(struct nfs_pgio_data *data) data->mds_offset = offset; /* Perform an asynchronous read to ds */ - nfs_initiate_read(ds_clnt, data, - &filelayout_read_call_ops, RPC_TASK_SOFTCONN); + nfs_initiate_pgio(ds_clnt, data, + &filelayout_read_call_ops, 0, RPC_TASK_SOFTCONN); return PNFS_ATTEMPTED; } @@ -613,7 +613,7 @@ filelayout_write_pagelist(struct nfs_pgio_data *data, int sync) data->args.offset = filelayout_get_dserver_offset(lseg, offset); /* Perform an asynchronous write */ - nfs_initiate_write(ds_clnt, data, + nfs_initiate_pgio(ds_clnt, data, &filelayout_write_call_ops, sync, RPC_TASK_SOFTCONN); return PNFS_ATTEMPTED; diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index d8d25a4deb8..ab5b1850ca4 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -447,6 +447,52 @@ static void nfs_pgio_prepare(struct rpc_task *task, void *calldata) rpc_exit(task, err); } +int nfs_initiate_pgio(struct rpc_clnt *clnt, struct nfs_pgio_data *data, + const struct rpc_call_ops *call_ops, int how, int flags) +{ + struct rpc_task *task; + struct rpc_message msg = { + .rpc_argp = &data->args, + .rpc_resp = &data->res, + .rpc_cred = data->header->cred, + }; + struct rpc_task_setup task_setup_data = { + .rpc_client = clnt, + .task = &data->task, + .rpc_message = &msg, + .callback_ops = call_ops, + .callback_data = data, + .workqueue = nfsiod_workqueue, + .flags = RPC_TASK_ASYNC | flags, + }; + int ret = 0; + + data->header->rw_ops->rw_initiate(data, &msg, &task_setup_data, how); + + dprintk("NFS: %5u initiated pgio call " + "(req %s/%llu, %u bytes @ offset %llu)\n", + data->task.tk_pid, + data->header->inode->i_sb->s_id, + (unsigned long long)NFS_FILEID(data->header->inode), + data->args.count, + (unsigned long long)data->args.offset); + + task = rpc_run_task(&task_setup_data); + if (IS_ERR(task)) { + ret = PTR_ERR(task); + goto out; + } + if (how & FLUSH_SYNC) { + ret = rpc_wait_for_completion_task(task); + if (ret == 0) + ret = task->tk_status; + } + rpc_put_task(task); +out: + return ret; +} +EXPORT_SYMBOL_GPL(nfs_initiate_pgio); + /** * nfs_pgio_error - Clean up from a pageio error * @desc: IO descriptor diff --git a/fs/nfs/read.c b/fs/nfs/read.c index 4fcef82d78b..0359b0d76ef 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -151,53 +151,22 @@ out: hdr->release(hdr); } -int nfs_initiate_read(struct rpc_clnt *clnt, - struct nfs_pgio_data *data, - const struct rpc_call_ops *call_ops, int flags) +static void nfs_initiate_read(struct nfs_pgio_data *data, struct rpc_message *msg, + struct rpc_task_setup *task_setup_data, int how) { struct inode *inode = data->header->inode; int swap_flags = IS_SWAPFILE(inode) ? NFS_RPC_SWAPFLAGS : 0; - struct rpc_task *task; - struct rpc_message msg = { - .rpc_argp = &data->args, - .rpc_resp = &data->res, - .rpc_cred = data->header->cred, - }; - struct rpc_task_setup task_setup_data = { - .task = &data->task, - .rpc_client = clnt, - .rpc_message = &msg, - .callback_ops = call_ops, - .callback_data = data, - .workqueue = nfsiod_workqueue, - .flags = RPC_TASK_ASYNC | swap_flags | flags, - }; - /* Set up the initial task struct. */ - NFS_PROTO(inode)->read_setup(data, &msg); - - dprintk("NFS: %5u initiated read call (req %s/%llu, %u bytes @ " - "offset %llu)\n", - data->task.tk_pid, - inode->i_sb->s_id, - (unsigned long long)NFS_FILEID(inode), - data->args.count, - (unsigned long long)data->args.offset); - - task = rpc_run_task(&task_setup_data); - if (IS_ERR(task)) - return PTR_ERR(task); - rpc_put_task(task); - return 0; + task_setup_data->flags |= swap_flags; + NFS_PROTO(inode)->read_setup(data, msg); } -EXPORT_SYMBOL_GPL(nfs_initiate_read); static int nfs_do_read(struct nfs_pgio_data *data, const struct rpc_call_ops *call_ops) { struct inode *inode = data->header->inode; - return nfs_initiate_read(NFS_CLIENT(inode), data, call_ops, 0); + return nfs_initiate_pgio(NFS_CLIENT(inode), data, call_ops, 0, 0); } static int @@ -491,4 +460,5 @@ static const struct nfs_rw_ops nfs_rw_read_ops = { .rw_free_header = nfs_readhdr_free, .rw_done = nfs_readpage_done, .rw_result = nfs_readpage_result, + .rw_initiate = nfs_initiate_read, }; diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 0e34c702419..e46a1fc6c1f 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -932,60 +932,18 @@ static int flush_task_priority(int how) return RPC_PRIORITY_NORMAL; } -int nfs_initiate_write(struct rpc_clnt *clnt, - struct nfs_pgio_data *data, - const struct rpc_call_ops *call_ops, - int how, int flags) +static void nfs_initiate_write(struct nfs_pgio_data *data, struct rpc_message *msg, + struct rpc_task_setup *task_setup_data, int how) { struct inode *inode = data->header->inode; int priority = flush_task_priority(how); - struct rpc_task *task; - struct rpc_message msg = { - .rpc_argp = &data->args, - .rpc_resp = &data->res, - .rpc_cred = data->header->cred, - }; - struct rpc_task_setup task_setup_data = { - .rpc_client = clnt, - .task = &data->task, - .rpc_message = &msg, - .callback_ops = call_ops, - .callback_data = data, - .workqueue = nfsiod_workqueue, - .flags = RPC_TASK_ASYNC | flags, - .priority = priority, - }; - int ret = 0; - /* Set up the initial task struct. */ - NFS_PROTO(inode)->write_setup(data, &msg); - - dprintk("NFS: %5u initiated write call " - "(req %s/%llu, %u bytes @ offset %llu)\n", - data->task.tk_pid, - inode->i_sb->s_id, - (unsigned long long)NFS_FILEID(inode), - data->args.count, - (unsigned long long)data->args.offset); + task_setup_data->priority = priority; + NFS_PROTO(inode)->write_setup(data, msg); nfs4_state_protect_write(NFS_SERVER(inode)->nfs_client, - &task_setup_data.rpc_client, &msg, data); - - task = rpc_run_task(&task_setup_data); - if (IS_ERR(task)) { - ret = PTR_ERR(task); - goto out; - } - if (how & FLUSH_SYNC) { - ret = rpc_wait_for_completion_task(task); - if (ret == 0) - ret = task->tk_status; - } - rpc_put_task(task); -out: - return ret; + &task_setup_data->rpc_client, msg, data); } -EXPORT_SYMBOL_GPL(nfs_initiate_write); static int nfs_do_write(struct nfs_pgio_data *data, const struct rpc_call_ops *call_ops, @@ -993,7 +951,7 @@ static int nfs_do_write(struct nfs_pgio_data *data, { struct inode *inode = data->header->inode; - return nfs_initiate_write(NFS_CLIENT(inode), data, call_ops, how, 0); + return nfs_initiate_pgio(NFS_CLIENT(inode), data, call_ops, how, 0); } static int nfs_do_multiple_writes(struct list_head *head, @@ -1743,4 +1701,5 @@ static const struct nfs_rw_ops nfs_rw_write_ops = { .rw_release = nfs_writeback_release_common, .rw_done = nfs_writeback_done, .rw_result = nfs_writeback_result, + .rw_initiate = nfs_initiate_write, }; diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h index 01aa29c5ec4..c6a587f7118 100644 --- a/include/linux/nfs_page.h +++ b/include/linux/nfs_page.h @@ -59,6 +59,8 @@ struct nfs_rw_ops { void (*rw_release)(struct nfs_pgio_data *); int (*rw_done)(struct rpc_task *, struct nfs_pgio_data *, struct inode *); void (*rw_result)(struct rpc_task *, struct nfs_pgio_data *); + void (*rw_initiate)(struct nfs_pgio_data *, struct rpc_message *, + struct rpc_task_setup *, int); }; struct nfs_pageio_descriptor { -- cgit v1.2.3-70-g09d2 From c3766276f26090f4459329839cdcc8506dfbced5 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Tue, 6 May 2014 09:12:38 -0400 Subject: NFS: Create a common multiple_pgios() function Once again, these two functions look identical in the read and write case. Time to combine them together! Signed-off-by: Anna Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/internal.h | 1 + fs/nfs/pagelist.c | 21 +++++++++++++++++++++ fs/nfs/read.c | 32 ++------------------------------ fs/nfs/write.c | 31 +------------------------------ 4 files changed, 25 insertions(+), 60 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index be4f2a7e917..886273a8916 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -243,6 +243,7 @@ void nfs_pgio_data_release(struct nfs_pgio_data *); int nfs_generic_pgio(struct nfs_pageio_descriptor *, struct nfs_pgio_header *); int nfs_initiate_pgio(struct rpc_clnt *, struct nfs_pgio_data *, const struct rpc_call_ops *, int, int); +int nfs_do_multiple_pgios(struct list_head *, const struct rpc_call_ops *, int); static inline void nfs_iocounter_init(struct nfs_io_counter *c) { diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index ab5b1850ca4..2471e027881 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -493,6 +493,27 @@ out: } EXPORT_SYMBOL_GPL(nfs_initiate_pgio); +int nfs_do_multiple_pgios(struct list_head *head, + const struct rpc_call_ops *call_ops, + int how) +{ + struct nfs_pgio_data *data; + int ret = 0; + + while (!list_empty(head)) { + int ret2; + + data = list_first_entry(head, struct nfs_pgio_data, list); + list_del_init(&data->list); + + ret2 = nfs_initiate_pgio(NFS_CLIENT(data->header->inode), + data, call_ops, how, 0); + if (ret == 0) + ret = ret2; + } + return ret; +} + /** * nfs_pgio_error - Clean up from a pageio error * @desc: IO descriptor diff --git a/fs/nfs/read.c b/fs/nfs/read.c index 0359b0d76ef..b834d458a2b 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -161,34 +161,6 @@ static void nfs_initiate_read(struct nfs_pgio_data *data, struct rpc_message *ms NFS_PROTO(inode)->read_setup(data, msg); } -static int nfs_do_read(struct nfs_pgio_data *data, - const struct rpc_call_ops *call_ops) -{ - struct inode *inode = data->header->inode; - - return nfs_initiate_pgio(NFS_CLIENT(inode), data, call_ops, 0, 0); -} - -static int -nfs_do_multiple_reads(struct list_head *head, - const struct rpc_call_ops *call_ops) -{ - struct nfs_pgio_data *data; - int ret = 0; - - while (!list_empty(head)) { - int ret2; - - data = list_first_entry(head, struct nfs_pgio_data, list); - list_del_init(&data->list); - - ret2 = nfs_do_read(data, call_ops); - if (ret == 0) - ret = ret2; - } - return ret; -} - static void nfs_async_read_error(struct list_head *head) { @@ -222,8 +194,8 @@ static int nfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc) atomic_inc(&hdr->refcnt); ret = nfs_generic_pgio(desc, hdr); if (ret == 0) - ret = nfs_do_multiple_reads(&hdr->rpc_list, - desc->pg_rpc_callops); + ret = nfs_do_multiple_pgios(&hdr->rpc_list, + desc->pg_rpc_callops, 0); if (atomic_dec_and_test(&hdr->refcnt)) hdr->completion_ops->completion(hdr); return ret; diff --git a/fs/nfs/write.c b/fs/nfs/write.c index e46a1fc6c1f..d3fa181053a 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -945,35 +945,6 @@ static void nfs_initiate_write(struct nfs_pgio_data *data, struct rpc_message *m &task_setup_data->rpc_client, msg, data); } -static int nfs_do_write(struct nfs_pgio_data *data, - const struct rpc_call_ops *call_ops, - int how) -{ - struct inode *inode = data->header->inode; - - return nfs_initiate_pgio(NFS_CLIENT(inode), data, call_ops, how, 0); -} - -static int nfs_do_multiple_writes(struct list_head *head, - const struct rpc_call_ops *call_ops, - int how) -{ - struct nfs_pgio_data *data; - int ret = 0; - - while (!list_empty(head)) { - int ret2; - - data = list_first_entry(head, struct nfs_pgio_data, list); - list_del_init(&data->list); - - ret2 = nfs_do_write(data, call_ops, how); - if (ret == 0) - ret = ret2; - } - return ret; -} - /* If a nfs_flush_* function fails, it should remove reqs from @head and * call this on each, which will prepare them to be retried on next * writeback using standard nfs. @@ -1018,7 +989,7 @@ static int nfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc) atomic_inc(&hdr->refcnt); ret = nfs_generic_pgio(desc, hdr); if (ret == 0) - ret = nfs_do_multiple_writes(&hdr->rpc_list, + ret = nfs_do_multiple_pgios(&hdr->rpc_list, desc->pg_rpc_callops, desc->pg_ioflags); if (atomic_dec_and_test(&hdr->refcnt)) -- cgit v1.2.3-70-g09d2 From cf485fcd68bc2dd91258e844ba4649404fff3235 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Tue, 6 May 2014 09:12:39 -0400 Subject: NFS: Create a common generic_pg_pgios() What we have here is two functions that look identical. Let's share some more code! Signed-off-by: Anna Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/internal.h | 2 +- fs/nfs/pagelist.c | 26 +++++++++++++++++++++++++- fs/nfs/read.c | 25 +------------------------ fs/nfs/write.c | 26 +------------------------- 4 files changed, 28 insertions(+), 51 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 886273a8916..29e99aac367 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -243,7 +243,7 @@ void nfs_pgio_data_release(struct nfs_pgio_data *); int nfs_generic_pgio(struct nfs_pageio_descriptor *, struct nfs_pgio_header *); int nfs_initiate_pgio(struct rpc_clnt *, struct nfs_pgio_data *, const struct rpc_call_ops *, int, int); -int nfs_do_multiple_pgios(struct list_head *, const struct rpc_call_ops *, int); +int nfs_generic_pg_pgios(struct nfs_pageio_descriptor *); static inline void nfs_iocounter_init(struct nfs_io_counter *c) { diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index 2471e027881..83d4ab46a2e 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -493,7 +493,7 @@ out: } EXPORT_SYMBOL_GPL(nfs_initiate_pgio); -int nfs_do_multiple_pgios(struct list_head *head, +static int nfs_do_multiple_pgios(struct list_head *head, const struct rpc_call_ops *call_ops, int how) { @@ -688,6 +688,30 @@ static int nfs_pgio_one(struct nfs_pageio_descriptor *desc, return 0; } +int nfs_generic_pg_pgios(struct nfs_pageio_descriptor *desc) +{ + struct nfs_rw_header *rw_hdr; + struct nfs_pgio_header *hdr; + int ret; + + rw_hdr = nfs_rw_header_alloc(desc->pg_rw_ops); + if (!rw_hdr) { + desc->pg_completion_ops->error_cleanup(&desc->pg_list); + return -ENOMEM; + } + hdr = &rw_hdr->header; + nfs_pgheader_init(desc, hdr, nfs_rw_header_free); + atomic_inc(&hdr->refcnt); + ret = nfs_generic_pgio(desc, hdr); + if (ret == 0) + ret = nfs_do_multiple_pgios(&hdr->rpc_list, + desc->pg_rpc_callops, + desc->pg_ioflags); + if (atomic_dec_and_test(&hdr->refcnt)) + hdr->completion_ops->completion(hdr); + return ret; +} + int nfs_generic_pgio(struct nfs_pageio_descriptor *desc, struct nfs_pgio_header *hdr) { diff --git a/fs/nfs/read.c b/fs/nfs/read.c index b834d458a2b..ebd1666ee13 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -178,32 +178,9 @@ static const struct nfs_pgio_completion_ops nfs_async_read_completion_ops = { .completion = nfs_read_completion, }; -static int nfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc) -{ - struct nfs_rw_header *rhdr; - struct nfs_pgio_header *hdr; - int ret; - - rhdr = nfs_rw_header_alloc(desc->pg_rw_ops); - if (!rhdr) { - desc->pg_completion_ops->error_cleanup(&desc->pg_list); - return -ENOMEM; - } - hdr = &rhdr->header; - nfs_pgheader_init(desc, hdr, nfs_rw_header_free); - atomic_inc(&hdr->refcnt); - ret = nfs_generic_pgio(desc, hdr); - if (ret == 0) - ret = nfs_do_multiple_pgios(&hdr->rpc_list, - desc->pg_rpc_callops, 0); - if (atomic_dec_and_test(&hdr->refcnt)) - hdr->completion_ops->completion(hdr); - return ret; -} - static const struct nfs_pageio_ops nfs_pageio_read_ops = { .pg_test = nfs_generic_pg_test, - .pg_doio = nfs_generic_pg_readpages, + .pg_doio = nfs_generic_pg_pgios, }; /* diff --git a/fs/nfs/write.c b/fs/nfs/write.c index d3fa181053a..31a8b29e402 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -973,33 +973,9 @@ static const struct nfs_pgio_completion_ops nfs_async_write_completion_ops = { .completion = nfs_write_completion, }; -static int nfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc) -{ - struct nfs_rw_header *whdr; - struct nfs_pgio_header *hdr; - int ret; - - whdr = nfs_rw_header_alloc(desc->pg_rw_ops); - if (!whdr) { - desc->pg_completion_ops->error_cleanup(&desc->pg_list); - return -ENOMEM; - } - hdr = &whdr->header; - nfs_pgheader_init(desc, hdr, nfs_rw_header_free); - atomic_inc(&hdr->refcnt); - ret = nfs_generic_pgio(desc, hdr); - if (ret == 0) - ret = nfs_do_multiple_pgios(&hdr->rpc_list, - desc->pg_rpc_callops, - desc->pg_ioflags); - if (atomic_dec_and_test(&hdr->refcnt)) - hdr->completion_ops->completion(hdr); - return ret; -} - static const struct nfs_pageio_ops nfs_pageio_write_ops = { .pg_test = nfs_generic_pg_test, - .pg_doio = nfs_generic_pg_writepages, + .pg_doio = nfs_generic_pg_pgios, }; void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, -- cgit v1.2.3-70-g09d2 From 41d8d5b7a559a9bfbf9680d1e4777e1a7b0149d5 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Tue, 6 May 2014 09:12:40 -0400 Subject: NFS: Create a common nfs_pageio_ops struct At this point the read and write structures look identical, so combine them into something shared by both. Signed-off-by: Anna Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/internal.h | 2 +- fs/nfs/pagelist.c | 7 ++++++- fs/nfs/read.c | 10 ++-------- fs/nfs/write.c | 9 ++------- 4 files changed, 11 insertions(+), 17 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 29e99aac367..8b69cba1bb0 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -237,13 +237,13 @@ extern void nfs_pgheader_init(struct nfs_pageio_descriptor *desc, void nfs_set_pgio_error(struct nfs_pgio_header *hdr, int error, loff_t pos); int nfs_iocounter_wait(struct nfs_io_counter *c); +extern const struct nfs_pageio_ops nfs_pgio_rw_ops; struct nfs_rw_header *nfs_rw_header_alloc(const struct nfs_rw_ops *); void nfs_rw_header_free(struct nfs_pgio_header *); void nfs_pgio_data_release(struct nfs_pgio_data *); int nfs_generic_pgio(struct nfs_pageio_descriptor *, struct nfs_pgio_header *); int nfs_initiate_pgio(struct rpc_clnt *, struct nfs_pgio_data *, const struct rpc_call_ops *, int, int); -int nfs_generic_pg_pgios(struct nfs_pageio_descriptor *); static inline void nfs_iocounter_init(struct nfs_io_counter *c) { diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index 83d4ab46a2e..29591094125 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -688,7 +688,7 @@ static int nfs_pgio_one(struct nfs_pageio_descriptor *desc, return 0; } -int nfs_generic_pg_pgios(struct nfs_pageio_descriptor *desc) +static int nfs_generic_pg_pgios(struct nfs_pageio_descriptor *desc) { struct nfs_rw_header *rw_hdr; struct nfs_pgio_header *hdr; @@ -933,3 +933,8 @@ static const struct rpc_call_ops nfs_pgio_common_ops = { .rpc_call_done = nfs_pgio_result, .rpc_release = nfs_pgio_release, }; + +const struct nfs_pageio_ops nfs_pgio_rw_ops = { + .pg_test = nfs_generic_pg_test, + .pg_doio = nfs_generic_pg_pgios, +}; diff --git a/fs/nfs/read.c b/fs/nfs/read.c index ebd1666ee13..3986668e439 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -28,7 +28,6 @@ #define NFSDBG_FACILITY NFSDBG_PAGECACHE -static const struct nfs_pageio_ops nfs_pageio_read_ops; static const struct nfs_pgio_completion_ops nfs_async_read_completion_ops; static const struct nfs_rw_ops nfs_rw_read_ops; @@ -58,7 +57,7 @@ void nfs_pageio_init_read(struct nfs_pageio_descriptor *pgio, const struct nfs_pgio_completion_ops *compl_ops) { struct nfs_server *server = NFS_SERVER(inode); - const struct nfs_pageio_ops *pg_ops = &nfs_pageio_read_ops; + const struct nfs_pageio_ops *pg_ops = &nfs_pgio_rw_ops; #ifdef CONFIG_NFS_V4_1 if (server->pnfs_curr_ld && !force_mds) @@ -71,7 +70,7 @@ EXPORT_SYMBOL_GPL(nfs_pageio_init_read); void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio) { - pgio->pg_ops = &nfs_pageio_read_ops; + pgio->pg_ops = &nfs_pgio_rw_ops; pgio->pg_bsize = NFS_SERVER(pgio->pg_inode)->rsize; } EXPORT_SYMBOL_GPL(nfs_pageio_reset_read_mds); @@ -178,11 +177,6 @@ static const struct nfs_pgio_completion_ops nfs_async_read_completion_ops = { .completion = nfs_read_completion, }; -static const struct nfs_pageio_ops nfs_pageio_read_ops = { - .pg_test = nfs_generic_pg_test, - .pg_doio = nfs_generic_pg_pgios, -}; - /* * This is the callback from RPC telling us whether a reply was * received or some error occurred (timeout or socket shutdown). diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 31a8b29e402..2680f29f8a5 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -973,17 +973,12 @@ static const struct nfs_pgio_completion_ops nfs_async_write_completion_ops = { .completion = nfs_write_completion, }; -static const struct nfs_pageio_ops nfs_pageio_write_ops = { - .pg_test = nfs_generic_pg_test, - .pg_doio = nfs_generic_pg_pgios, -}; - void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, struct inode *inode, int ioflags, bool force_mds, const struct nfs_pgio_completion_ops *compl_ops) { struct nfs_server *server = NFS_SERVER(inode); - const struct nfs_pageio_ops *pg_ops = &nfs_pageio_write_ops; + const struct nfs_pageio_ops *pg_ops = &nfs_pgio_rw_ops; #ifdef CONFIG_NFS_V4_1 if (server->pnfs_curr_ld && !force_mds) @@ -996,7 +991,7 @@ EXPORT_SYMBOL_GPL(nfs_pageio_init_write); void nfs_pageio_reset_write_mds(struct nfs_pageio_descriptor *pgio) { - pgio->pg_ops = &nfs_pageio_write_ops; + pgio->pg_ops = &nfs_pgio_rw_ops; pgio->pg_bsize = NFS_SERVER(pgio->pg_inode)->wsize; } EXPORT_SYMBOL_GPL(nfs_pageio_reset_write_mds); -- cgit v1.2.3-70-g09d2 From 8c8f1ac109726e4ed44a920f5c962c84610d4a17 Mon Sep 17 00:00:00 2001 From: Weston Andros Adamson Date: Thu, 15 May 2014 11:56:42 -0400 Subject: nfs: remove unused arg from nfs_create_request @inode is passed but not used. Signed-off-by: Weston Andros Adamson Signed-off-by: Trond Myklebust --- fs/nfs/direct.c | 6 ++---- fs/nfs/pagelist.c | 4 +--- fs/nfs/read.c | 5 ++--- fs/nfs/write.c | 2 +- include/linux/nfs_page.h | 1 - 5 files changed, 6 insertions(+), 12 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index 164b0167677..1dd8c622d71 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -380,8 +380,7 @@ static ssize_t nfs_direct_read_schedule_segment(struct nfs_pageio_descriptor *de struct nfs_page *req; unsigned int req_len = min_t(size_t, bytes, PAGE_SIZE - pgbase); /* XXX do we need to do the eof zeroing found in async_filler? */ - req = nfs_create_request(dreq->ctx, dreq->inode, - pagevec[i], + req = nfs_create_request(dreq->ctx, pagevec[i], pgbase, req_len); if (IS_ERR(req)) { result = PTR_ERR(req); @@ -750,8 +749,7 @@ static ssize_t nfs_direct_write_schedule_segment(struct nfs_pageio_descriptor *d struct nfs_page *req; unsigned int req_len = min_t(size_t, bytes, PAGE_SIZE - pgbase); - req = nfs_create_request(dreq->ctx, dreq->inode, - pagevec[i], + req = nfs_create_request(dreq->ctx, pagevec[i], pgbase, req_len); if (IS_ERR(req)) { result = PTR_ERR(req); diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index 29591094125..4b4b212ec6b 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -139,7 +139,6 @@ nfs_iocounter_wait(struct nfs_io_counter *c) /** * nfs_create_request - Create an NFS read/write request. * @ctx: open context to use - * @inode: inode to which the request is attached * @page: page to write * @offset: starting offset within the page for the write * @count: number of bytes to read/write @@ -149,8 +148,7 @@ nfs_iocounter_wait(struct nfs_io_counter *c) * User should ensure it is safe to sleep in this function. */ struct nfs_page * -nfs_create_request(struct nfs_open_context *ctx, struct inode *inode, - struct page *page, +nfs_create_request(struct nfs_open_context *ctx, struct page *page, unsigned int offset, unsigned int count) { struct nfs_page *req; diff --git a/fs/nfs/read.c b/fs/nfs/read.c index 3986668e439..46d90448f69 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -85,7 +85,7 @@ int nfs_readpage_async(struct nfs_open_context *ctx, struct inode *inode, len = nfs_page_length(page); if (len == 0) return nfs_return_empty_page(page); - new = nfs_create_request(ctx, inode, page, 0, len); + new = nfs_create_request(ctx, page, 0, len); if (IS_ERR(new)) { unlock_page(page); return PTR_ERR(new); @@ -303,7 +303,6 @@ static int readpage_async_filler(void *data, struct page *page) { struct nfs_readdesc *desc = (struct nfs_readdesc *)data; - struct inode *inode = page_file_mapping(page)->host; struct nfs_page *new; unsigned int len; int error; @@ -312,7 +311,7 @@ readpage_async_filler(void *data, struct page *page) if (len == 0) return nfs_return_empty_page(page); - new = nfs_create_request(desc->ctx, inode, page, 0, len); + new = nfs_create_request(desc->ctx, page, 0, len); if (IS_ERR(new)) goto out_error; diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 2680f29f8a5..e773df207c0 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -761,7 +761,7 @@ static struct nfs_page * nfs_setup_write_request(struct nfs_open_context* ctx, req = nfs_try_to_update_request(inode, page, offset, bytes); if (req != NULL) goto out; - req = nfs_create_request(ctx, inode, page, offset, bytes); + req = nfs_create_request(ctx, page, offset, bytes); if (IS_ERR(req)) goto out; nfs_inode_add_request(inode, req); diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h index eb2eb639687..be0b0981e7a 100644 --- a/include/linux/nfs_page.h +++ b/include/linux/nfs_page.h @@ -85,7 +85,6 @@ struct nfs_pageio_descriptor { #define NFS_WBACK_BUSY(req) (test_bit(PG_BUSY,&(req)->wb_flags)) extern struct nfs_page *nfs_create_request(struct nfs_open_context *ctx, - struct inode *inode, struct page *page, unsigned int offset, unsigned int count); -- cgit v1.2.3-70-g09d2 From 2bfc6e566daa8386c9cffef2f7de17fc330d3835 Mon Sep 17 00:00:00 2001 From: Weston Andros Adamson Date: Thu, 15 May 2014 11:56:45 -0400 Subject: nfs: add support for multiple nfs reqs per page Add "page groups" - a circular list of nfs requests (struct nfs_page) that all reference the same page. This gives nfs read and write paths the ability to account for sub-page regions independently. This somewhat follows the design of struct buffer_head's sub-page accounting. Only "head" requests are ever added/removed from the inode list in the buffered write path. "head" and "sub" requests are treated the same through the read path and the rest of the write/commit path. Requests are given an extra reference across the life of the list. Page groups are never rejoined after being split. If the read/write request fails and the client falls back to another path (ie revert to MDS in PNFS case), the already split requests are pushed through the recoalescing code again, which may split them further and then coalesce them into properly sized requests on the wire. Fragmentation shouldn't be a problem with the current design, because we flush all requests in page group when a non-contiguous request is added, so the only time resplitting should occur is on a resend of a read or write. This patch lays the groundwork for sub-page splitting, but does not actually do any splitting. For now all page groups have one request as pg_test functions don't yet split pages. There are several related patches that are needed support multiple requests per page group. Signed-off-by: Weston Andros Adamson Signed-off-by: Trond Myklebust --- fs/nfs/direct.c | 7 +- fs/nfs/pagelist.c | 220 ++++++++++++++++++++++++++++++++++++++++++++--- fs/nfs/read.c | 4 +- fs/nfs/write.c | 13 ++- include/linux/nfs_page.h | 13 ++- 5 files changed, 236 insertions(+), 21 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index 1dd8c622d71..2c0e08f4cf7 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -380,7 +380,7 @@ static ssize_t nfs_direct_read_schedule_segment(struct nfs_pageio_descriptor *de struct nfs_page *req; unsigned int req_len = min_t(size_t, bytes, PAGE_SIZE - pgbase); /* XXX do we need to do the eof zeroing found in async_filler? */ - req = nfs_create_request(dreq->ctx, pagevec[i], + req = nfs_create_request(dreq->ctx, pagevec[i], NULL, pgbase, req_len); if (IS_ERR(req)) { result = PTR_ERR(req); @@ -749,7 +749,7 @@ static ssize_t nfs_direct_write_schedule_segment(struct nfs_pageio_descriptor *d struct nfs_page *req; unsigned int req_len = min_t(size_t, bytes, PAGE_SIZE - pgbase); - req = nfs_create_request(dreq->ctx, pagevec[i], + req = nfs_create_request(dreq->ctx, pagevec[i], NULL, pgbase, req_len); if (IS_ERR(req)) { result = PTR_ERR(req); @@ -827,6 +827,8 @@ static void nfs_direct_write_completion(struct nfs_pgio_header *hdr) spin_unlock(&dreq->lock); while (!list_empty(&hdr->pages)) { + bool do_destroy = true; + req = nfs_list_entry(hdr->pages.next); nfs_list_remove_request(req); switch (bit) { @@ -834,6 +836,7 @@ static void nfs_direct_write_completion(struct nfs_pgio_header *hdr) case NFS_IOHDR_NEED_COMMIT: kref_get(&req->wb_kref); nfs_mark_request_commit(req, hdr->lseg, &cinfo); + do_destroy = false; } nfs_unlock_and_release_request(req); } diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index f343f49ff59..015fb7b48df 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -29,6 +29,8 @@ static struct kmem_cache *nfs_page_cachep; static const struct rpc_call_ops nfs_pgio_common_ops; +static void nfs_free_request(struct nfs_page *); + static bool nfs_pgarray_set(struct nfs_page_array *p, unsigned int pagecount) { p->npages = pagecount; @@ -136,10 +138,151 @@ nfs_iocounter_wait(struct nfs_io_counter *c) return __nfs_iocounter_wait(c); } +/* + * nfs_page_group_lock - lock the head of the page group + * @req - request in group that is to be locked + * + * this lock must be held if modifying the page group list + */ +void +nfs_page_group_lock(struct nfs_page *req) +{ + struct nfs_page *head = req->wb_head; + int err = -EAGAIN; + + WARN_ON_ONCE(head != head->wb_head); + + while (err) + err = wait_on_bit_lock(&head->wb_flags, PG_HEADLOCK, + nfs_wait_bit_killable, TASK_KILLABLE); +} + +/* + * nfs_page_group_unlock - unlock the head of the page group + * @req - request in group that is to be unlocked + */ +void +nfs_page_group_unlock(struct nfs_page *req) +{ + struct nfs_page *head = req->wb_head; + + WARN_ON_ONCE(head != head->wb_head); + + smp_mb__before_clear_bit(); + clear_bit(PG_HEADLOCK, &head->wb_flags); + smp_mb__after_clear_bit(); + wake_up_bit(&head->wb_flags, PG_HEADLOCK); +} + +/* + * nfs_page_group_sync_on_bit_locked + * + * must be called with page group lock held + */ +static bool +nfs_page_group_sync_on_bit_locked(struct nfs_page *req, unsigned int bit) +{ + struct nfs_page *head = req->wb_head; + struct nfs_page *tmp; + + WARN_ON_ONCE(!test_bit(PG_HEADLOCK, &head->wb_flags)); + WARN_ON_ONCE(test_and_set_bit(bit, &req->wb_flags)); + + tmp = req->wb_this_page; + while (tmp != req) { + if (!test_bit(bit, &tmp->wb_flags)) + return false; + tmp = tmp->wb_this_page; + } + + /* true! reset all bits */ + tmp = req; + do { + clear_bit(bit, &tmp->wb_flags); + tmp = tmp->wb_this_page; + } while (tmp != req); + + return true; +} + +/* + * nfs_page_group_sync_on_bit - set bit on current request, but only + * return true if the bit is set for all requests in page group + * @req - request in page group + * @bit - PG_* bit that is used to sync page group + */ +bool nfs_page_group_sync_on_bit(struct nfs_page *req, unsigned int bit) +{ + bool ret; + + nfs_page_group_lock(req); + ret = nfs_page_group_sync_on_bit_locked(req, bit); + nfs_page_group_unlock(req); + + return ret; +} + +/* + * nfs_page_group_init - Initialize the page group linkage for @req + * @req - a new nfs request + * @prev - the previous request in page group, or NULL if @req is the first + * or only request in the group (the head). + */ +static inline void +nfs_page_group_init(struct nfs_page *req, struct nfs_page *prev) +{ + WARN_ON_ONCE(prev == req); + + if (!prev) { + req->wb_head = req; + req->wb_this_page = req; + } else { + WARN_ON_ONCE(prev->wb_this_page != prev->wb_head); + WARN_ON_ONCE(!test_bit(PG_HEADLOCK, &prev->wb_head->wb_flags)); + req->wb_head = prev->wb_head; + req->wb_this_page = prev->wb_this_page; + prev->wb_this_page = req; + + /* grab extra ref if head request has extra ref from + * the write/commit path to handle handoff between write + * and commit lists */ + if (test_bit(PG_INODE_REF, &prev->wb_head->wb_flags)) + kref_get(&req->wb_kref); + } +} + +/* + * nfs_page_group_destroy - sync the destruction of page groups + * @req - request that no longer needs the page group + * + * releases the page group reference from each member once all + * members have called this function. + */ +static void +nfs_page_group_destroy(struct kref *kref) +{ + struct nfs_page *req = container_of(kref, struct nfs_page, wb_kref); + struct nfs_page *tmp, *next; + + if (!nfs_page_group_sync_on_bit(req, PG_TEARDOWN)) + return; + + tmp = req; + do { + next = tmp->wb_this_page; + /* unlink and free */ + tmp->wb_this_page = tmp; + tmp->wb_head = tmp; + nfs_free_request(tmp); + tmp = next; + } while (tmp != req); +} + /** * nfs_create_request - Create an NFS read/write request. * @ctx: open context to use * @page: page to write + * @last: last nfs request created for this page group or NULL if head * @offset: starting offset within the page for the write * @count: number of bytes to read/write * @@ -149,7 +292,8 @@ nfs_iocounter_wait(struct nfs_io_counter *c) */ struct nfs_page * nfs_create_request(struct nfs_open_context *ctx, struct page *page, - unsigned int offset, unsigned int count) + struct nfs_page *last, unsigned int offset, + unsigned int count) { struct nfs_page *req; struct nfs_lock_context *l_ctx; @@ -181,6 +325,7 @@ nfs_create_request(struct nfs_open_context *ctx, struct page *page, req->wb_bytes = count; req->wb_context = get_nfs_open_context(ctx); kref_init(&req->wb_kref); + nfs_page_group_init(req, last); return req; } @@ -238,16 +383,18 @@ static void nfs_clear_request(struct nfs_page *req) } } - /** * nfs_release_request - Release the count on an NFS read/write request * @req: request to release * * Note: Should never be called with the spinlock held! */ -static void nfs_free_request(struct kref *kref) +static void nfs_free_request(struct nfs_page *req) { - struct nfs_page *req = container_of(kref, struct nfs_page, wb_kref); + WARN_ON_ONCE(req->wb_this_page != req); + + /* extra debug: make sure no sync bits are still set */ + WARN_ON_ONCE(test_bit(PG_TEARDOWN, &req->wb_flags)); /* Release struct file and open context */ nfs_clear_request(req); @@ -256,7 +403,7 @@ static void nfs_free_request(struct kref *kref) void nfs_release_request(struct nfs_page *req) { - kref_put(&req->wb_kref, nfs_free_request); + kref_put(&req->wb_kref, nfs_page_group_destroy); } static int nfs_wait_bit_uninterruptible(void *word) @@ -832,21 +979,66 @@ static void nfs_pageio_doio(struct nfs_pageio_descriptor *desc) * @desc: destination io descriptor * @req: request * + * This may split a request into subrequests which are all part of the + * same page group. + * * Returns true if the request 'req' was successfully coalesced into the * existing list of pages 'desc'. */ static int __nfs_pageio_add_request(struct nfs_pageio_descriptor *desc, struct nfs_page *req) { - while (!nfs_pageio_do_add_request(desc, req)) { - desc->pg_moreio = 1; - nfs_pageio_doio(desc); - if (desc->pg_error < 0) - return 0; - desc->pg_moreio = 0; - if (desc->pg_recoalesce) - return 0; - } + struct nfs_page *subreq; + unsigned int bytes_left = 0; + unsigned int offset, pgbase; + + nfs_page_group_lock(req); + + subreq = req; + bytes_left = subreq->wb_bytes; + offset = subreq->wb_offset; + pgbase = subreq->wb_pgbase; + + do { + if (!nfs_pageio_do_add_request(desc, subreq)) { + /* make sure pg_test call(s) did nothing */ + WARN_ON_ONCE(subreq->wb_bytes != bytes_left); + WARN_ON_ONCE(subreq->wb_offset != offset); + WARN_ON_ONCE(subreq->wb_pgbase != pgbase); + + nfs_page_group_unlock(req); + desc->pg_moreio = 1; + nfs_pageio_doio(desc); + if (desc->pg_error < 0) + return 0; + desc->pg_moreio = 0; + if (desc->pg_recoalesce) + return 0; + /* retry add_request for this subreq */ + nfs_page_group_lock(req); + continue; + } + + /* check for buggy pg_test call(s) */ + WARN_ON_ONCE(subreq->wb_bytes + subreq->wb_pgbase > PAGE_SIZE); + WARN_ON_ONCE(subreq->wb_bytes > bytes_left); + WARN_ON_ONCE(subreq->wb_bytes == 0); + + bytes_left -= subreq->wb_bytes; + offset += subreq->wb_bytes; + pgbase += subreq->wb_bytes; + + if (bytes_left) { + subreq = nfs_create_request(req->wb_context, + req->wb_page, + subreq, pgbase, bytes_left); + nfs_lock_request(subreq); + subreq->wb_offset = offset; + subreq->wb_index = req->wb_index; + } + } while (bytes_left > 0); + + nfs_page_group_unlock(req); return 1; } diff --git a/fs/nfs/read.c b/fs/nfs/read.c index 46d90448f69..902ba2c63d0 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -85,7 +85,7 @@ int nfs_readpage_async(struct nfs_open_context *ctx, struct inode *inode, len = nfs_page_length(page); if (len == 0) return nfs_return_empty_page(page); - new = nfs_create_request(ctx, page, 0, len); + new = nfs_create_request(ctx, page, NULL, 0, len); if (IS_ERR(new)) { unlock_page(page); return PTR_ERR(new); @@ -311,7 +311,7 @@ readpage_async_filler(void *data, struct page *page) if (len == 0) return nfs_return_empty_page(page); - new = nfs_create_request(desc->ctx, page, 0, len); + new = nfs_create_request(desc->ctx, page, NULL, 0, len); if (IS_ERR(new)) goto out_error; diff --git a/fs/nfs/write.c b/fs/nfs/write.c index e773df207c0..d0f30f12a8b 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -367,6 +367,8 @@ static void nfs_inode_add_request(struct inode *inode, struct nfs_page *req) { struct nfs_inode *nfsi = NFS_I(inode); + WARN_ON_ONCE(req->wb_this_page != req); + /* Lock the request! */ nfs_lock_request(req); @@ -383,6 +385,7 @@ static void nfs_inode_add_request(struct inode *inode, struct nfs_page *req) set_page_private(req->wb_page, (unsigned long)req); } nfsi->npages++; + set_bit(PG_INODE_REF, &req->wb_flags); kref_get(&req->wb_kref); spin_unlock(&inode->i_lock); } @@ -567,6 +570,7 @@ static void nfs_write_completion(struct nfs_pgio_header *hdr) { struct nfs_commit_info cinfo; unsigned long bytes = 0; + bool do_destroy; if (test_bit(NFS_IOHDR_REDO, &hdr->flags)) goto out; @@ -596,6 +600,7 @@ remove_req: next: nfs_unlock_request(req); nfs_end_page_writeback(req->wb_page); + do_destroy = !test_bit(NFS_IOHDR_NEED_COMMIT, &hdr->flags); nfs_release_request(req); } out: @@ -700,6 +705,10 @@ static struct nfs_page *nfs_try_to_update_request(struct inode *inode, if (req == NULL) goto out_unlock; + /* should be handled by nfs_flush_incompatible */ + WARN_ON_ONCE(req->wb_head != req); + WARN_ON_ONCE(req->wb_this_page != req); + rqend = req->wb_offset + req->wb_bytes; /* * Tell the caller to flush out the request if @@ -761,7 +770,7 @@ static struct nfs_page * nfs_setup_write_request(struct nfs_open_context* ctx, req = nfs_try_to_update_request(inode, page, offset, bytes); if (req != NULL) goto out; - req = nfs_create_request(ctx, page, offset, bytes); + req = nfs_create_request(ctx, page, NULL, offset, bytes); if (IS_ERR(req)) goto out; nfs_inode_add_request(inode, req); @@ -805,6 +814,8 @@ int nfs_flush_incompatible(struct file *file, struct page *page) return 0; l_ctx = req->wb_lock_context; do_flush = req->wb_page != page || req->wb_context != ctx; + /* for now, flush if more than 1 request in page_group */ + do_flush |= req->wb_this_page != req; if (l_ctx && ctx->dentry->d_inode->i_flock != NULL) { do_flush |= l_ctx->lockowner.l_owner != current->files || l_ctx->lockowner.l_pid != current->tgid; diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h index 13d59af561f..986c0c279d0 100644 --- a/include/linux/nfs_page.h +++ b/include/linux/nfs_page.h @@ -26,6 +26,9 @@ enum { PG_MAPPED, /* page private set for buffered io */ PG_CLEAN, /* write succeeded */ PG_COMMIT_TO_DS, /* used by pnfs layouts */ + PG_INODE_REF, /* extra ref held by inode (head req only) */ + PG_HEADLOCK, /* page group lock of wb_head */ + PG_TEARDOWN, /* page group sync for destroy */ }; struct nfs_inode; @@ -41,6 +44,8 @@ struct nfs_page { struct kref wb_kref; /* reference count */ unsigned long wb_flags; struct nfs_write_verifier wb_verf; /* Commit cookie */ + struct nfs_page *wb_this_page; /* list of reqs for this page */ + struct nfs_page *wb_head; /* head pointer for req list */ }; struct nfs_pageio_descriptor; @@ -87,9 +92,10 @@ struct nfs_pageio_descriptor { extern struct nfs_page *nfs_create_request(struct nfs_open_context *ctx, struct page *page, + struct nfs_page *last, unsigned int offset, unsigned int count); -extern void nfs_release_request(struct nfs_page *req); +extern void nfs_release_request(struct nfs_page *); extern void nfs_pageio_init(struct nfs_pageio_descriptor *desc, @@ -108,7 +114,10 @@ extern size_t nfs_generic_pg_test(struct nfs_pageio_descriptor *desc, struct nfs_page *req); extern int nfs_wait_on_request(struct nfs_page *); extern void nfs_unlock_request(struct nfs_page *req); -extern void nfs_unlock_and_release_request(struct nfs_page *req); +extern void nfs_unlock_and_release_request(struct nfs_page *); +extern void nfs_page_group_lock(struct nfs_page *); +extern void nfs_page_group_unlock(struct nfs_page *); +extern bool nfs_page_group_sync_on_bit(struct nfs_page *, unsigned int); /* * Lock the page of an asynchronous request -- cgit v1.2.3-70-g09d2 From 20633f042fd0907300069714b98aaf607a8b5bf8 Mon Sep 17 00:00:00 2001 From: Weston Andros Adamson Date: Thu, 15 May 2014 11:56:47 -0400 Subject: nfs: page group syncing in write path Operations that modify state for a whole page must be syncronized across all requests within a page group. In the write path, this is calling end_page_writeback and removing the head request from an inode. Both of these operations should not be called until all requests in a page group have reached the point where they would call them. This patch should have no effect yet since all page groups currently have one request, but will come into play when pg_test functions are modified to split pages into sub-page regions. Signed-off-by: Weston Andros Adamson Signed-off-by: Trond Myklebust --- fs/nfs/pagelist.c | 2 ++ fs/nfs/write.c | 32 ++++++++++++++++++++------------ include/linux/nfs_page.h | 2 ++ 3 files changed, 24 insertions(+), 12 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index 18ee4e99347..ceb4424614a 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -397,6 +397,8 @@ static void nfs_free_request(struct nfs_page *req) WARN_ON_ONCE(test_bit(PG_TEARDOWN, &req->wb_flags)); WARN_ON_ONCE(test_bit(PG_UNLOCKPAGE, &req->wb_flags)); WARN_ON_ONCE(test_bit(PG_UPTODATE, &req->wb_flags)); + WARN_ON_ONCE(test_bit(PG_WB_END, &req->wb_flags)); + WARN_ON_ONCE(test_bit(PG_REMOVE, &req->wb_flags)); /* Release struct file and open context */ nfs_clear_request(req); diff --git a/fs/nfs/write.c b/fs/nfs/write.c index d0f30f12a8b..5d752766139 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -201,12 +201,15 @@ static void nfs_set_page_writeback(struct page *page) } } -static void nfs_end_page_writeback(struct page *page) +static void nfs_end_page_writeback(struct nfs_page *req) { - struct inode *inode = page_file_mapping(page)->host; + struct inode *inode = page_file_mapping(req->wb_page)->host; struct nfs_server *nfss = NFS_SERVER(inode); - end_page_writeback(page); + if (!nfs_page_group_sync_on_bit(req, PG_WB_END)) + return; + + end_page_writeback(req->wb_page); if (atomic_long_dec_return(&nfss->writeback) < NFS_CONGESTION_OFF_THRESH) clear_bdi_congested(&nfss->backing_dev_info, BLK_RW_ASYNC); } @@ -397,15 +400,20 @@ static void nfs_inode_remove_request(struct nfs_page *req) { struct inode *inode = req->wb_context->dentry->d_inode; struct nfs_inode *nfsi = NFS_I(inode); + struct nfs_page *head; - spin_lock(&inode->i_lock); - if (likely(!PageSwapCache(req->wb_page))) { - set_page_private(req->wb_page, 0); - ClearPagePrivate(req->wb_page); - clear_bit(PG_MAPPED, &req->wb_flags); + if (nfs_page_group_sync_on_bit(req, PG_REMOVE)) { + head = req->wb_head; + + spin_lock(&inode->i_lock); + if (likely(!PageSwapCache(head->wb_page))) { + set_page_private(head->wb_page, 0); + ClearPagePrivate(head->wb_page); + clear_bit(PG_MAPPED, &head->wb_flags); + } + nfsi->npages--; + spin_unlock(&inode->i_lock); } - nfsi->npages--; - spin_unlock(&inode->i_lock); nfs_release_request(req); } @@ -599,7 +607,7 @@ remove_req: nfs_inode_remove_request(req); next: nfs_unlock_request(req); - nfs_end_page_writeback(req->wb_page); + nfs_end_page_writeback(req); do_destroy = !test_bit(NFS_IOHDR_NEED_COMMIT, &hdr->flags); nfs_release_request(req); } @@ -964,7 +972,7 @@ static void nfs_redirty_request(struct nfs_page *req) { nfs_mark_request_dirty(req); nfs_unlock_request(req); - nfs_end_page_writeback(req->wb_page); + nfs_end_page_writeback(req); nfs_release_request(req); } diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h index 6385175a127..7d9096d95d4 100644 --- a/include/linux/nfs_page.h +++ b/include/linux/nfs_page.h @@ -31,6 +31,8 @@ enum { PG_TEARDOWN, /* page group sync for destroy */ PG_UNLOCKPAGE, /* page group sync bit in read path */ PG_UPTODATE, /* page group sync bit in read path */ + PG_WB_END, /* page group sync bit in write path */ + PG_REMOVE, /* page group sync bit in write path */ }; struct nfs_inode; -- cgit v1.2.3-70-g09d2 From d72ddcbab60a70258d0cd5752db3f53824df78d6 Mon Sep 17 00:00:00 2001 From: Weston Andros Adamson Date: Thu, 15 May 2014 11:56:48 -0400 Subject: nfs: page group support in nfs_mark_uptodate Change how nfs_mark_uptodate checks to see if writes cover a whole page. This patch should have no effect yet since all page groups currently have one request, but will come into play when pg_test functions are modified to split pages into sub-page regions. Signed-off-by: Weston Andros Adamson Signed-off-by: Trond Myklebust --- fs/nfs/write.c | 74 ++++++++++++++++++++++++++++++++++++++++++++++++++++------ 1 file changed, 67 insertions(+), 7 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 5d752766139..17b98952f7b 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -154,18 +154,78 @@ static void nfs_set_pageerror(struct page *page) nfs_zap_mapping(page_file_mapping(page)->host, page_file_mapping(page)); } +/* + * nfs_page_group_search_locked + * @head - head request of page group + * @page_offset - offset into page + * + * Search page group with head @head to find a request that contains the + * page offset @page_offset. + * + * Returns a pointer to the first matching nfs request, or NULL if no + * match is found. + * + * Must be called with the page group lock held + */ +static struct nfs_page * +nfs_page_group_search_locked(struct nfs_page *head, unsigned int page_offset) +{ + struct nfs_page *req; + + WARN_ON_ONCE(head != head->wb_head); + WARN_ON_ONCE(!test_bit(PG_HEADLOCK, &head->wb_head->wb_flags)); + + req = head; + do { + if (page_offset >= req->wb_pgbase && + page_offset < (req->wb_pgbase + req->wb_bytes)) + return req; + + req = req->wb_this_page; + } while (req != head); + + return NULL; +} + +/* + * nfs_page_group_covers_page + * @head - head request of page group + * + * Return true if the page group with head @head covers the whole page, + * returns false otherwise + */ +static bool nfs_page_group_covers_page(struct nfs_page *req) +{ + struct nfs_page *tmp; + unsigned int pos = 0; + unsigned int len = nfs_page_length(req->wb_page); + + nfs_page_group_lock(req); + + do { + tmp = nfs_page_group_search_locked(req->wb_head, pos); + if (tmp) { + /* no way this should happen */ + WARN_ON_ONCE(tmp->wb_pgbase != pos); + pos += tmp->wb_bytes - (pos - tmp->wb_pgbase); + } + } while (tmp && pos < len); + + nfs_page_group_unlock(req); + WARN_ON_ONCE(pos > len); + return pos == len; +} + /* We can set the PG_uptodate flag if we see that a write request * covers the full page. */ -static void nfs_mark_uptodate(struct page *page, unsigned int base, unsigned int count) +static void nfs_mark_uptodate(struct nfs_page *req) { - if (PageUptodate(page)) - return; - if (base != 0) + if (PageUptodate(req->wb_page)) return; - if (count != nfs_page_length(page)) + if (!nfs_page_group_covers_page(req)) return; - SetPageUptodate(page); + SetPageUptodate(req->wb_page); } static int wb_priority(struct writeback_control *wbc) @@ -796,7 +856,7 @@ static int nfs_writepage_setup(struct nfs_open_context *ctx, struct page *page, return PTR_ERR(req); /* Update file length */ nfs_grow_file(page, offset, count); - nfs_mark_uptodate(page, req->wb_pgbase, req->wb_bytes); + nfs_mark_uptodate(req); nfs_mark_request_dirty(req); nfs_unlock_and_release_request(req); return 0; -- cgit v1.2.3-70-g09d2 From 18dd78c427513fb0f89365138be66e6ee8700d1b Mon Sep 17 00:00:00 2001 From: Scott Mayhew Date: Fri, 20 Jun 2014 08:44:42 -0400 Subject: nfs: Fix cache_validity check in nfs_write_pageuptodate() NFS_INO_INVALID_DATA cannot be ignored, even if we have a delegation. We're still having some problems with data corruption when multiple clients are appending to a file and those clients are being granted write delegations on open. To reproduce: Client A: vi /mnt/`hostname -s` while :; do echo "XXXXXXXXXXXXXXX" >>/mnt/file; sleep $(( $RANDOM % 5 )); done Client B: vi /mnt/`hostname -s` while :; do echo "YYYYYYYYYYYYYYY" >>/mnt/file; sleep $(( $RANDOM % 5 )); done What's happening is that in nfs_update_inode() we're recognizing that the file size has changed and we're setting NFS_INO_INVALID_DATA accordingly, but then we ignore the cache_validity flags in nfs_write_pageuptodate() because we have a delegation. As a result, in nfs_updatepage() we're extending the write to cover the full page even though we've not read in the data to begin with. Signed-off-by: Scott Mayhew Cc: # v3.11+ Signed-off-by: Trond Myklebust --- fs/nfs/write.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 3ee5af4e738..98ff061ccaf 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -934,12 +934,14 @@ static bool nfs_write_pageuptodate(struct page *page, struct inode *inode) if (nfs_have_delegated_attributes(inode)) goto out; - if (nfsi->cache_validity & (NFS_INO_INVALID_DATA|NFS_INO_REVAL_PAGECACHE)) + if (nfsi->cache_validity & NFS_INO_REVAL_PAGECACHE) return false; smp_rmb(); if (test_bit(NFS_INO_INVALIDATING, &nfsi->flags)) return false; out: + if (nfsi->cache_validity & NFS_INO_INVALID_DATA) + return false; return PageUptodate(page) != 0; } -- cgit v1.2.3-70-g09d2 From 17089a29a25a3bfe8d14520cd866b7d635ffe5ba Mon Sep 17 00:00:00 2001 From: Weston Andros Adamson Date: Fri, 11 Jul 2014 10:20:45 -0400 Subject: nfs: mark nfs_page reqs with flag for extra ref Change the use of PG_INODE_REF - set it when taking extra reference on subrequests and take care to only release once for each request. Signed-off-by: Weston Andros Adamson Signed-off-by: Trond Myklebust --- fs/nfs/pagelist.c | 4 +++- fs/nfs/write.c | 8 ++++++-- 2 files changed, 9 insertions(+), 3 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index b6ee3a6ee96..7368b2130a4 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -251,8 +251,10 @@ nfs_page_group_init(struct nfs_page *req, struct nfs_page *prev) /* grab extra ref if head request has extra ref from * the write/commit path to handle handoff between write * and commit lists */ - if (test_bit(PG_INODE_REF, &prev->wb_head->wb_flags)) + if (test_bit(PG_INODE_REF, &prev->wb_head->wb_flags)) { + set_bit(PG_INODE_REF, &req->wb_flags); kref_get(&req->wb_kref); + } } } diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 98ff061ccaf..8e5745a4def 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -448,7 +448,9 @@ static void nfs_inode_add_request(struct inode *inode, struct nfs_page *req) set_page_private(req->wb_page, (unsigned long)req); } nfsi->npages++; - set_bit(PG_INODE_REF, &req->wb_flags); + /* this a head request for a page group - mark it as having an + * extra reference so sub groups can follow suit */ + WARN_ON(test_and_set_bit(PG_INODE_REF, &req->wb_flags)); kref_get(&req->wb_kref); spin_unlock(&inode->i_lock); } @@ -474,7 +476,9 @@ static void nfs_inode_remove_request(struct nfs_page *req) nfsi->npages--; spin_unlock(&inode->i_lock); } - nfs_release_request(req); + + if (test_and_clear_bit(PG_INODE_REF, &req->wb_flags)) + nfs_release_request(req); } static void -- cgit v1.2.3-70-g09d2 From 84d3a9a913ba6a90c79b7763d063bb42554a8906 Mon Sep 17 00:00:00 2001 From: Weston Andros Adamson Date: Fri, 11 Jul 2014 10:20:47 -0400 Subject: nfs: change find_request to find_head_request nfs_page_find_request_locked* should find the head request for that page. Rename the functions and add comments to make this clear, and fix a bug that could return a subrequest when page_private isn't set on the page. Signed-off-by: Weston Andros Adamson Signed-off-by: Trond Myklebust --- fs/nfs/write.c | 33 ++++++++++++++++++++++++--------- 1 file changed, 24 insertions(+), 9 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 8e5745a4def..53c4a9917da 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -91,8 +91,15 @@ static void nfs_context_set_write_error(struct nfs_open_context *ctx, int error) set_bit(NFS_CONTEXT_ERROR_WRITE, &ctx->flags); } +/* + * nfs_page_find_head_request_locked - find head request associated with @page + * + * must be called while holding the inode lock. + * + * returns matching head request with reference held, or NULL if not found. + */ static struct nfs_page * -nfs_page_find_request_locked(struct nfs_inode *nfsi, struct page *page) +nfs_page_find_head_request_locked(struct nfs_inode *nfsi, struct page *page) { struct nfs_page *req = NULL; @@ -104,25 +111,33 @@ nfs_page_find_request_locked(struct nfs_inode *nfsi, struct page *page) /* Linearly search the commit list for the correct req */ list_for_each_entry_safe(freq, t, &nfsi->commit_info.list, wb_list) { if (freq->wb_page == page) { - req = freq; + req = freq->wb_head; break; } } } - if (req) + if (req) { + WARN_ON_ONCE(req->wb_head != req); + kref_get(&req->wb_kref); + } return req; } -static struct nfs_page *nfs_page_find_request(struct page *page) +/* + * nfs_page_find_head_request - find head request associated with @page + * + * returns matching head request with reference held, or NULL if not found. + */ +static struct nfs_page *nfs_page_find_head_request(struct page *page) { struct inode *inode = page_file_mapping(page)->host; struct nfs_page *req = NULL; spin_lock(&inode->i_lock); - req = nfs_page_find_request_locked(NFS_I(inode), page); + req = nfs_page_find_head_request_locked(NFS_I(inode), page); spin_unlock(&inode->i_lock); return req; } @@ -282,7 +297,7 @@ static struct nfs_page *nfs_find_and_lock_request(struct page *page, bool nonblo spin_lock(&inode->i_lock); for (;;) { - req = nfs_page_find_request_locked(NFS_I(inode), page); + req = nfs_page_find_head_request_locked(NFS_I(inode), page); if (req == NULL) break; if (nfs_lock_request(req)) @@ -773,7 +788,7 @@ static struct nfs_page *nfs_try_to_update_request(struct inode *inode, spin_lock(&inode->i_lock); for (;;) { - req = nfs_page_find_request_locked(NFS_I(inode), page); + req = nfs_page_find_head_request_locked(NFS_I(inode), page); if (req == NULL) goto out_unlock; @@ -881,7 +896,7 @@ int nfs_flush_incompatible(struct file *file, struct page *page) * dropped page. */ do { - req = nfs_page_find_request(page); + req = nfs_page_find_head_request(page); if (req == NULL) return 0; l_ctx = req->wb_lock_context; @@ -1575,7 +1590,7 @@ int nfs_wb_page_cancel(struct inode *inode, struct page *page) for (;;) { wait_on_page_writeback(page); - req = nfs_page_find_request(page); + req = nfs_page_find_head_request(page); if (req == NULL) break; if (nfs_lock_request(req)) { -- cgit v1.2.3-70-g09d2 From d458138353726ea6dcbc53ae3597e489d0432c25 Mon Sep 17 00:00:00 2001 From: Weston Andros Adamson Date: Fri, 11 Jul 2014 10:20:48 -0400 Subject: nfs: handle multiple reqs in nfs_page_async_flush Change nfs_find_and_lock_request so nfs_page_async_flush can handle multiple requests in a page. There is only one request for a page the first time nfs_page_async_flush is called, but if a write or commit fails, async_flush is called again and there may be multiple requests associated with the page. The solution is to merge all the requests in a page group into a single request before calling nfs_pageio_add_request. Rename nfs_find_and_lock_request to nfs_lock_and_join_requests and change it to first lock all requests for the page, then cancel and merge all subrequests into the head request. Signed-off-by: Weston Andros Adamson Signed-off-by: Trond Myklebust --- fs/nfs/internal.h | 1 + fs/nfs/pagelist.c | 4 +- fs/nfs/write.c | 255 +++++++++++++++++++++++++++++++++++++++++++++++++----- 3 files changed, 235 insertions(+), 25 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 82ddbf46660..f415cbf9f6c 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -244,6 +244,7 @@ void nfs_pgio_data_release(struct nfs_pgio_data *); int nfs_generic_pgio(struct nfs_pageio_descriptor *, struct nfs_pgio_header *); int nfs_initiate_pgio(struct rpc_clnt *, struct nfs_pgio_data *, const struct rpc_call_ops *, int, int); +void nfs_free_request(struct nfs_page *req); static inline void nfs_iocounter_init(struct nfs_io_counter *c) { diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index 05a63593a61..0aefc8102b6 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -29,8 +29,6 @@ static struct kmem_cache *nfs_page_cachep; static const struct rpc_call_ops nfs_pgio_common_ops; -static void nfs_free_request(struct nfs_page *); - static bool nfs_pgarray_set(struct nfs_page_array *p, unsigned int pagecount) { p->npages = pagecount; @@ -406,7 +404,7 @@ static void nfs_clear_request(struct nfs_page *req) * * Note: Should never be called with the spinlock held! */ -static void nfs_free_request(struct nfs_page *req) +void nfs_free_request(struct nfs_page *req) { WARN_ON_ONCE(req->wb_this_page != req); diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 53c4a9917da..9f4424c464a 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -46,6 +46,7 @@ static const struct rpc_call_ops nfs_commit_ops; static const struct nfs_pgio_completion_ops nfs_async_write_completion_ops; static const struct nfs_commit_completion_ops nfs_commit_completion_ops; static const struct nfs_rw_ops nfs_rw_write_ops; +static void nfs_clear_request_commit(struct nfs_page *req); static struct kmem_cache *nfs_wdata_cachep; static mempool_t *nfs_wdata_mempool; @@ -289,36 +290,246 @@ static void nfs_end_page_writeback(struct nfs_page *req) clear_bdi_congested(&nfss->backing_dev_info, BLK_RW_ASYNC); } -static struct nfs_page *nfs_find_and_lock_request(struct page *page, bool nonblock) + +/* nfs_page_group_clear_bits + * @req - an nfs request + * clears all page group related bits from @req + */ +static void +nfs_page_group_clear_bits(struct nfs_page *req) +{ + clear_bit(PG_TEARDOWN, &req->wb_flags); + clear_bit(PG_UNLOCKPAGE, &req->wb_flags); + clear_bit(PG_UPTODATE, &req->wb_flags); + clear_bit(PG_WB_END, &req->wb_flags); + clear_bit(PG_REMOVE, &req->wb_flags); +} + + +/* + * nfs_unroll_locks_and_wait - unlock all newly locked reqs and wait on @req + * + * this is a helper function for nfs_lock_and_join_requests + * + * @inode - inode associated with request page group, must be holding inode lock + * @head - head request of page group, must be holding head lock + * @req - request that couldn't lock and needs to wait on the req bit lock + * @nonblock - if true, don't actually wait + * + * NOTE: this must be called holding page_group bit lock and inode spin lock + * and BOTH will be released before returning. + * + * returns 0 on success, < 0 on error. + */ +static int +nfs_unroll_locks_and_wait(struct inode *inode, struct nfs_page *head, + struct nfs_page *req, bool nonblock) + __releases(&inode->i_lock) +{ + struct nfs_page *tmp; + int ret; + + /* relinquish all the locks successfully grabbed this run */ + for (tmp = head ; tmp != req; tmp = tmp->wb_this_page) + nfs_unlock_request(tmp); + + WARN_ON_ONCE(test_bit(PG_TEARDOWN, &req->wb_flags)); + + /* grab a ref on the request that will be waited on */ + kref_get(&req->wb_kref); + + nfs_page_group_unlock(head); + spin_unlock(&inode->i_lock); + + /* release ref from nfs_page_find_head_request_locked */ + nfs_release_request(head); + + if (!nonblock) + ret = nfs_wait_on_request(req); + else + ret = -EAGAIN; + nfs_release_request(req); + + return ret; +} + +/* + * nfs_destroy_unlinked_subrequests - destroy recently unlinked subrequests + * + * @destroy_list - request list (using wb_this_page) terminated by @old_head + * @old_head - the old head of the list + * + * All subrequests must be locked and removed from all lists, so at this point + * they are only "active" in this function, and possibly in nfs_wait_on_request + * with a reference held by some other context. + */ +static void +nfs_destroy_unlinked_subrequests(struct nfs_page *destroy_list, + struct nfs_page *old_head) +{ + while (destroy_list) { + struct nfs_page *subreq = destroy_list; + + destroy_list = (subreq->wb_this_page == old_head) ? + NULL : subreq->wb_this_page; + + WARN_ON_ONCE(old_head != subreq->wb_head); + + /* make sure old group is not used */ + subreq->wb_head = subreq; + subreq->wb_this_page = subreq; + + nfs_clear_request_commit(subreq); + + /* subreq is now totally disconnected from page group or any + * write / commit lists. last chance to wake any waiters */ + nfs_unlock_request(subreq); + + if (!test_bit(PG_TEARDOWN, &subreq->wb_flags)) { + /* release ref on old head request */ + nfs_release_request(old_head); + + nfs_page_group_clear_bits(subreq); + + /* release the PG_INODE_REF reference */ + if (test_and_clear_bit(PG_INODE_REF, &subreq->wb_flags)) + nfs_release_request(subreq); + else + WARN_ON_ONCE(1); + } else { + WARN_ON_ONCE(test_bit(PG_CLEAN, &subreq->wb_flags)); + /* zombie requests have already released the last + * reference and were waiting on the rest of the + * group to complete. Since it's no longer part of a + * group, simply free the request */ + nfs_page_group_clear_bits(subreq); + nfs_free_request(subreq); + } + } +} + +/* + * nfs_lock_and_join_requests - join all subreqs to the head req and return + * a locked reference, cancelling any pending + * operations for this page. + * + * @page - the page used to lookup the "page group" of nfs_page structures + * @nonblock - if true, don't block waiting for request locks + * + * This function joins all sub requests to the head request by first + * locking all requests in the group, cancelling any pending operations + * and finally updating the head request to cover the whole range covered by + * the (former) group. All subrequests are removed from any write or commit + * lists, unlinked from the group and destroyed. + * + * Returns a locked, referenced pointer to the head request - which after + * this call is guaranteed to be the only request associated with the page. + * Returns NULL if no requests are found for @page, or a ERR_PTR if an + * error was encountered. + */ +static struct nfs_page * +nfs_lock_and_join_requests(struct page *page, bool nonblock) { struct inode *inode = page_file_mapping(page)->host; - struct nfs_page *req; + struct nfs_page *head, *subreq; + struct nfs_page *destroy_list = NULL; + unsigned int total_bytes; int ret; +try_again: + total_bytes = 0; + + WARN_ON_ONCE(destroy_list); + spin_lock(&inode->i_lock); - for (;;) { - req = nfs_page_find_head_request_locked(NFS_I(inode), page); - if (req == NULL) - break; - if (nfs_lock_request(req)) - break; - /* Note: If we hold the page lock, as is the case in nfs_writepage, - * then the call to nfs_lock_request() will always - * succeed provided that someone hasn't already marked the - * request as dirty (in which case we don't care). - */ + + /* + * A reference is taken only on the head request which acts as a + * reference to the whole page group - the group will not be destroyed + * until the head reference is released. + */ + head = nfs_page_find_head_request_locked(NFS_I(inode), page); + + if (!head) { spin_unlock(&inode->i_lock); - if (!nonblock) - ret = nfs_wait_on_request(req); - else - ret = -EAGAIN; - nfs_release_request(req); - if (ret != 0) + return NULL; + } + + /* lock each request in the page group */ + nfs_page_group_lock(head); + subreq = head; + do { + /* + * Subrequests are always contiguous, non overlapping + * and in order. If not, it's a programming error. + */ + WARN_ON_ONCE(subreq->wb_offset != + (head->wb_offset + total_bytes)); + + /* keep track of how many bytes this group covers */ + total_bytes += subreq->wb_bytes; + + if (!nfs_lock_request(subreq)) { + /* releases page group bit lock and + * inode spin lock and all references */ + ret = nfs_unroll_locks_and_wait(inode, head, + subreq, nonblock); + + if (ret == 0) + goto try_again; + return ERR_PTR(ret); - spin_lock(&inode->i_lock); + } + + subreq = subreq->wb_this_page; + } while (subreq != head); + + /* Now that all requests are locked, make sure they aren't on any list. + * Commit list removal accounting is done after locks are dropped */ + subreq = head; + do { + nfs_list_remove_request(subreq); + subreq = subreq->wb_this_page; + } while (subreq != head); + + /* unlink subrequests from head, destroy them later */ + if (head->wb_this_page != head) { + /* destroy list will be terminated by head */ + destroy_list = head->wb_this_page; + head->wb_this_page = head; + + /* change head request to cover whole range that + * the former page group covered */ + head->wb_bytes = total_bytes; } + + /* + * prepare head request to be added to new pgio descriptor + */ + nfs_page_group_clear_bits(head); + + /* + * some part of the group was still on the inode list - otherwise + * the group wouldn't be involved in async write. + * grab a reference for the head request, iff it needs one. + */ + if (!test_and_set_bit(PG_INODE_REF, &head->wb_flags)) + kref_get(&head->wb_kref); + + nfs_page_group_unlock(head); + + /* drop lock to clear_request_commit the head req and clean up + * requests on destroy list */ spin_unlock(&inode->i_lock); - return req; + + nfs_destroy_unlinked_subrequests(destroy_list, head); + + /* clean up commit list state */ + nfs_clear_request_commit(head); + + /* still holds ref on head from nfs_page_find_head_request_locked + * and still has lock on head from lock loop */ + return head; } /* @@ -331,7 +542,7 @@ static int nfs_page_async_flush(struct nfs_pageio_descriptor *pgio, struct nfs_page *req; int ret = 0; - req = nfs_find_and_lock_request(page, nonblock); + req = nfs_lock_and_join_requests(page, nonblock); if (!req) goto out; ret = PTR_ERR(req); -- cgit v1.2.3-70-g09d2 From 3e2170451e91327bfa8a82040fea78043847533a Mon Sep 17 00:00:00 2001 From: Weston Andros Adamson Date: Fri, 11 Jul 2014 10:20:49 -0400 Subject: nfs: handle multiple reqs in nfs_wb_page_cancel Use nfs_lock_and_join_requests to merge all subrequests into the head request - this cancels and dereferences all subrequests. Signed-off-by: Weston Andros Adamson Signed-off-by: Trond Myklebust --- fs/nfs/write.c | 41 +++++++++++++++++++++-------------------- 1 file changed, 21 insertions(+), 20 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 9f4424c464a..bdc4db23951 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -1799,27 +1799,28 @@ int nfs_wb_page_cancel(struct inode *inode, struct page *page) struct nfs_page *req; int ret = 0; - for (;;) { - wait_on_page_writeback(page); - req = nfs_page_find_head_request(page); - if (req == NULL) - break; - if (nfs_lock_request(req)) { - nfs_clear_request_commit(req); - nfs_inode_remove_request(req); - /* - * In case nfs_inode_remove_request has marked the - * page as being dirty - */ - cancel_dirty_page(page, PAGE_CACHE_SIZE); - nfs_unlock_and_release_request(req); - break; - } - ret = nfs_wait_on_request(req); - nfs_release_request(req); - if (ret < 0) - break; + wait_on_page_writeback(page); + + /* blocking call to cancel all requests and join to a single (head) + * request */ + req = nfs_lock_and_join_requests(page, false); + + if (IS_ERR(req)) { + ret = PTR_ERR(req); + } else if (req) { + /* all requests from this page have been cancelled by + * nfs_lock_and_join_requests, so just remove the head + * request from the inode / page_private pointer and + * release it */ + nfs_inode_remove_request(req); + /* + * In case nfs_inode_remove_request has marked the + * page as being dirty + */ + cancel_dirty_page(page, PAGE_CACHE_SIZE); + nfs_unlock_and_release_request(req); } + return ret; } -- cgit v1.2.3-70-g09d2 From aafe37504c70954fc104c88d9d15d553572dae69 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sat, 12 Jul 2014 17:23:39 -0400 Subject: NFS: Remove 2 unused variables Cc: Weston Andros Adamson Signed-off-by: Trond Myklebust --- fs/nfs/direct.c | 2 -- fs/nfs/write.c | 2 -- 2 files changed, 4 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index 8f98138cbc4..f11b9eed0de 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -756,7 +756,6 @@ static void nfs_direct_write_completion(struct nfs_pgio_header *hdr) spin_unlock(&dreq->lock); while (!list_empty(&hdr->pages)) { - bool do_destroy = true; req = nfs_list_entry(hdr->pages.next); nfs_list_remove_request(req); @@ -765,7 +764,6 @@ static void nfs_direct_write_completion(struct nfs_pgio_header *hdr) case NFS_IOHDR_NEED_COMMIT: kref_get(&req->wb_kref); nfs_mark_request_commit(req, hdr->lseg, &cinfo); - do_destroy = false; } nfs_unlock_and_release_request(req); } diff --git a/fs/nfs/write.c b/fs/nfs/write.c index bdc4db23951..5e2f1030454 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -868,7 +868,6 @@ static void nfs_write_completion(struct nfs_pgio_header *hdr) { struct nfs_commit_info cinfo; unsigned long bytes = 0; - bool do_destroy; if (test_bit(NFS_IOHDR_REDO, &hdr->flags)) goto out; @@ -898,7 +897,6 @@ remove_req: next: nfs_unlock_request(req); nfs_end_page_writeback(req); - do_destroy = !test_bit(NFS_IOHDR_NEED_COMMIT, &hdr->flags); nfs_release_request(req); } out: -- cgit v1.2.3-70-g09d2