From d1e284d50a1506aab8ad7895f31b5f93b5647fc9 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 17 Jan 2012 22:04:24 -0500 Subject: NFSv4: Clean up nfs4_get_state_owner Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index f0c849c98fe..53ef365f437 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -1754,7 +1754,8 @@ static int _nfs4_do_open(struct inode *dir, struct dentry *dentry, fmode_t fmode /* Protect against reboot recovery conflicts */ status = -ENOMEM; - if (!(sp = nfs4_get_state_owner(server, cred))) { + sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); + if (sp == NULL) { dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); goto out_err; } -- cgit v1.2.3-70-g09d2 From 9157c31dd610a127bc6f01bc1953cf8b80382040 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 17 Jan 2012 22:04:24 -0500 Subject: NFSv4: Replace state_owner->so_owner_id with an ida based allocator We're unlikely to ever need more than 2^31 simultaneous open owners, so let's replace the custom allocator with the generic ida allocator. Signed-off-by: Trond Myklebust --- fs/nfs/client.c | 2 ++ fs/nfs/nfs4_fs.h | 2 +- fs/nfs/nfs4proc.c | 4 ++-- fs/nfs/nfs4state.c | 17 ++++++++++++----- include/linux/nfs_fs_sb.h | 3 ++- 5 files changed, 19 insertions(+), 9 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/client.c b/fs/nfs/client.c index ca9a4aa38df..8d1739d3424 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -1092,6 +1092,7 @@ static struct nfs_server *nfs_alloc_server(void) return NULL; } + ida_init(&server->openowner_id); pnfs_init_server(server); return server; @@ -1117,6 +1118,7 @@ void nfs_free_server(struct nfs_server *server) nfs_put_client(server->nfs_client); + ida_destroy(&server->openowner_id); nfs_free_iostats(server->io_stats); bdi_destroy(&server->backing_dev_info); kfree(server); diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 654b091644c..091b679747e 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -92,7 +92,6 @@ struct nfs_unique_id { * semantics by allowing the server to identify replayed requests. */ struct nfs4_state_owner { - struct nfs_unique_id so_owner_id; struct nfs_server *so_server; struct list_head so_lru; unsigned long so_expires; @@ -106,6 +105,7 @@ struct nfs4_state_owner { struct list_head so_states; struct nfs_seqid_counter so_seqid; struct rpc_sequence so_sequence; + int so_owner_id; }; enum { diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 53ef365f437..1dd2e407a90 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -815,7 +815,7 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, p->o_arg.open_flags = flags; p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); p->o_arg.clientid = server->nfs_client->cl_clientid; - p->o_arg.id = sp->so_owner_id.id; + p->o_arg.id = sp->so_owner_id; p->o_arg.name = &dentry->d_name; p->o_arg.server = server; p->o_arg.bitmask = server->attr_bitmask; @@ -1440,7 +1440,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata) rcu_read_unlock(); } /* Update sequence id. */ - data->o_arg.id = sp->so_owner_id.id; + data->o_arg.id = sp->so_owner_id; data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index a8a42a677d8..8472707286f 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -405,6 +405,7 @@ nfs4_insert_state_owner_locked(struct nfs4_state_owner *new) struct rb_node **p = &server->state_owners.rb_node, *parent = NULL; struct nfs4_state_owner *sp; + int err; while (*p != NULL) { parent = *p; @@ -421,8 +422,9 @@ nfs4_insert_state_owner_locked(struct nfs4_state_owner *new) return sp; } } - nfs_alloc_unique_id_locked(&server->openowner_id, - &new->so_owner_id, 1, 64); + err = ida_get_new(&server->openowner_id, &new->so_owner_id); + if (err) + return ERR_PTR(err); rb_link_node(&new->so_server_node, parent, p); rb_insert_color(&new->so_server_node, &server->state_owners); return new; @@ -435,7 +437,7 @@ nfs4_remove_state_owner_locked(struct nfs4_state_owner *sp) if (!RB_EMPTY_NODE(&sp->so_server_node)) rb_erase(&sp->so_server_node, &server->state_owners); - nfs_free_unique_id(&server->openowner_id, &sp->so_owner_id); + ida_remove(&server->openowner_id, sp->so_owner_id); } /* @@ -534,8 +536,13 @@ struct nfs4_state_owner *nfs4_get_state_owner(struct nfs_server *server, new = nfs4_alloc_state_owner(server, cred, gfp_flags); if (new == NULL) goto out; - sp = nfs4_insert_state_owner_locked(new); - spin_unlock(&clp->cl_lock); + do { + if (ida_pre_get(&server->openowner_id, gfp_flags) == 0) + break; + spin_lock(&clp->cl_lock); + sp = nfs4_insert_state_owner_locked(new); + spin_unlock(&clp->cl_lock); + } while (sp == ERR_PTR(-EAGAIN)); if (sp != new) nfs4_free_state_owner(new); out: diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index e0863d35f75..645537e18bd 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -3,6 +3,7 @@ #include #include +#include #include #include #include @@ -151,9 +152,9 @@ struct nfs_server { /* the following fields are protected by nfs_client->cl_lock */ struct rb_root state_owners; - struct rb_root openowner_id; struct rb_root lockowner_id; #endif + struct ida openowner_id; struct list_head state_owners_lru; struct list_head layouts; struct list_head delegations; -- cgit v1.2.3-70-g09d2 From d2d7ce28a2f8ec6ca2a49145e643d2e3c7d21ba3 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 17 Jan 2012 22:04:25 -0500 Subject: NFSv4: Replace lock_owner->ld_id with an ida based allocator Again, We're unlikely to ever need more than 2^31 simultaneous lock owners, so let's replace the custom allocator. Now that there are no more users, we can also get rid of the custom allocator code. Signed-off-by: Trond Myklebust --- fs/nfs/client.c | 2 ++ fs/nfs/nfs4_fs.h | 7 +---- fs/nfs/nfs4proc.c | 6 ++-- fs/nfs/nfs4state.c | 74 +++++------------------------------------------ include/linux/nfs_fs_sb.h | 2 +- 5 files changed, 15 insertions(+), 76 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 8d1739d3424..df60d9971b9 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -1093,6 +1093,7 @@ static struct nfs_server *nfs_alloc_server(void) } ida_init(&server->openowner_id); + ida_init(&server->lockowner_id); pnfs_init_server(server); return server; @@ -1118,6 +1119,7 @@ void nfs_free_server(struct nfs_server *server) nfs_put_client(server->nfs_client); + ida_destroy(&server->lockowner_id); ida_destroy(&server->openowner_id); nfs_free_iostats(server->io_stats); bdi_destroy(&server->backing_dev_info); diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 091b679747e..b23cb0cda63 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -81,11 +81,6 @@ static inline void nfs_confirm_seqid(struct nfs_seqid_counter *seqid, int status seqid->flags |= NFS_SEQID_CONFIRMED; } -struct nfs_unique_id { - struct rb_node rb_node; - __u64 id; -}; - /* * NFS4 state_owners and lock_owners are simply labels for ordered * sequences of RPC calls. Their sole purpose is to provide once-only @@ -145,9 +140,9 @@ struct nfs4_lock_state { struct nfs4_state * ls_state; /* Pointer to open state */ #define NFS_LOCK_INITIALIZED 1 int ls_flags; + int ls_id; struct nfs_seqid_counter ls_seqid; struct rpc_sequence ls_sequence; - struct nfs_unique_id ls_id; nfs4_stateid ls_stateid; atomic_t ls_count; struct nfs4_lock_owner ls_owner; diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 1dd2e407a90..9c77af90096 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -4017,7 +4017,7 @@ static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock if (status != 0) goto out; lsp = request->fl_u.nfs4_fl.owner; - arg.lock_owner.id = lsp->ls_id.id; + arg.lock_owner.id = lsp->ls_id; arg.lock_owner.s_dev = server->s_dev; status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); switch (status) { @@ -4262,7 +4262,7 @@ static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, goto out_free_seqid; p->arg.lock_stateid = &lsp->ls_stateid; p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; - p->arg.lock_owner.id = lsp->ls_id.id; + p->arg.lock_owner.id = lsp->ls_id; p->arg.lock_owner.s_dev = server->s_dev; p->res.lock_seqid = p->arg.lock_seqid; p->lsp = lsp; @@ -4679,7 +4679,7 @@ void nfs4_release_lockowner(const struct nfs4_lock_state *lsp) if (!args) return; args->lock_owner.clientid = server->nfs_client->cl_clientid; - args->lock_owner.id = lsp->ls_id.id; + args->lock_owner.id = lsp->ls_id; args->lock_owner.s_dev = server->s_dev; msg.rpc_argp = args; rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args); diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 8472707286f..5abf23615bc 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -317,62 +317,6 @@ out: return cred; } -static void nfs_alloc_unique_id_locked(struct rb_root *root, - struct nfs_unique_id *new, - __u64 minval, int maxbits) -{ - struct rb_node **p, *parent; - struct nfs_unique_id *pos; - __u64 mask = ~0ULL; - - if (maxbits < 64) - mask = (1ULL << maxbits) - 1ULL; - - /* Ensure distribution is more or less flat */ - get_random_bytes(&new->id, sizeof(new->id)); - new->id &= mask; - if (new->id < minval) - new->id += minval; -retry: - p = &root->rb_node; - parent = NULL; - - while (*p != NULL) { - parent = *p; - pos = rb_entry(parent, struct nfs_unique_id, rb_node); - - if (new->id < pos->id) - p = &(*p)->rb_left; - else if (new->id > pos->id) - p = &(*p)->rb_right; - else - goto id_exists; - } - rb_link_node(&new->rb_node, parent, p); - rb_insert_color(&new->rb_node, root); - return; -id_exists: - for (;;) { - new->id++; - if (new->id < minval || (new->id & mask) != new->id) { - new->id = minval; - break; - } - parent = rb_next(parent); - if (parent == NULL) - break; - pos = rb_entry(parent, struct nfs_unique_id, rb_node); - if (new->id < pos->id) - break; - } - goto retry; -} - -static void nfs_free_unique_id(struct rb_root *root, struct nfs_unique_id *id) -{ - rb_erase(&id->rb_node, root); -} - static struct nfs4_state_owner * nfs4_find_state_owner_locked(struct nfs_server *server, struct rpc_cred *cred) { @@ -800,7 +744,6 @@ static struct nfs4_lock_state *nfs4_alloc_lock_state(struct nfs4_state *state, f { struct nfs4_lock_state *lsp; struct nfs_server *server = state->owner->so_server; - struct nfs_client *clp = server->nfs_client; lsp = kzalloc(sizeof(*lsp), GFP_NOFS); if (lsp == NULL) @@ -820,24 +763,23 @@ static struct nfs4_lock_state *nfs4_alloc_lock_state(struct nfs4_state *state, f lsp->ls_owner.lo_u.posix_owner = fl_owner; break; default: - kfree(lsp); - return NULL; + goto out_free; } - spin_lock(&clp->cl_lock); - nfs_alloc_unique_id_locked(&server->lockowner_id, &lsp->ls_id, 1, 64); - spin_unlock(&clp->cl_lock); + lsp->ls_id = ida_simple_get(&server->lockowner_id, 0, 0, GFP_NOFS); + if (lsp->ls_id < 0) + goto out_free; INIT_LIST_HEAD(&lsp->ls_locks); return lsp; +out_free: + kfree(lsp); + return NULL; } static void nfs4_free_lock_state(struct nfs4_lock_state *lsp) { struct nfs_server *server = lsp->ls_state->owner->so_server; - struct nfs_client *clp = server->nfs_client; - spin_lock(&clp->cl_lock); - nfs_free_unique_id(&server->lockowner_id, &lsp->ls_id); - spin_unlock(&clp->cl_lock); + ida_simple_remove(&server->lockowner_id, lsp->ls_id); rpc_destroy_wait_queue(&lsp->ls_sequence.wait); kfree(lsp); } diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 645537e18bd..c23469308b8 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -152,9 +152,9 @@ struct nfs_server { /* the following fields are protected by nfs_client->cl_lock */ struct rb_root state_owners; - struct rb_root lockowner_id; #endif struct ida openowner_id; + struct ida lockowner_id; struct list_head state_owners_lru; struct list_head layouts; struct list_head delegations; -- cgit v1.2.3-70-g09d2 From 9d12b216aa87f68c96f6dd8eb5d2d0ccc9989b1c Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 17 Jan 2012 22:04:25 -0500 Subject: NFSv41: Add a new helper nfs4_init_sequence() Clean up Signed-off-by: Trond Myklebust --- fs/nfs/nfs4_fs.h | 6 ++-- fs/nfs/nfs4filelayout.c | 4 +-- fs/nfs/nfs4proc.c | 93 +++++++++++++++++++++++++++++-------------------- fs/nfs/read.c | 2 +- fs/nfs/unlink.c | 4 +-- fs/nfs/write.c | 2 +- 6 files changed, 65 insertions(+), 46 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index b23cb0cda63..0924494e10a 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -230,10 +230,10 @@ static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *ser extern int nfs4_setup_sequence(const struct nfs_server *server, struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, - int cache_reply, struct rpc_task *task); + struct rpc_task *task); extern int nfs41_setup_sequence(struct nfs4_session *session, struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, - int cache_reply, struct rpc_task *task); + struct rpc_task *task); extern void nfs4_destroy_session(struct nfs4_session *session); extern struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp); extern int nfs4_proc_create_session(struct nfs_client *); @@ -264,7 +264,7 @@ static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *ser static inline int nfs4_setup_sequence(const struct nfs_server *server, struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, - int cache_reply, struct rpc_task *task) + struct rpc_task *task) { return 0; } diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c index 71ec08617e2..b4f8f9624af 100644 --- a/fs/nfs/nfs4filelayout.c +++ b/fs/nfs/nfs4filelayout.c @@ -173,7 +173,7 @@ static void filelayout_read_prepare(struct rpc_task *task, void *data) if (nfs41_setup_sequence(rdata->ds_clp->cl_session, &rdata->args.seq_args, &rdata->res.seq_res, - 0, task)) + task)) return; rpc_call_start(task); @@ -254,7 +254,7 @@ static void filelayout_write_prepare(struct rpc_task *task, void *data) if (nfs41_setup_sequence(wdata->ds_clp->cl_session, &wdata->args.seq_args, &wdata->res.seq_res, - 0, task)) + task)) return; rpc_call_start(task); diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 9c77af90096..8926d33383e 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -534,10 +534,20 @@ out: return ret_id; } +static void nfs41_init_sequence(struct nfs4_sequence_args *args, + struct nfs4_sequence_res *res, int cache_reply) +{ + args->sa_session = NULL; + args->sa_cache_this = 0; + if (cache_reply) + args->sa_cache_this = 1; + res->sr_session = NULL; + res->sr_slot = NULL; +} + int nfs41_setup_sequence(struct nfs4_session *session, struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, - int cache_reply, struct rpc_task *task) { struct nfs4_slot *slot; @@ -582,7 +592,6 @@ int nfs41_setup_sequence(struct nfs4_session *session, slot = tbl->slots + slotid; args->sa_session = session; args->sa_slotid = slotid; - args->sa_cache_this = cache_reply; dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); @@ -602,24 +611,19 @@ EXPORT_SYMBOL_GPL(nfs41_setup_sequence); int nfs4_setup_sequence(const struct nfs_server *server, struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, - int cache_reply, struct rpc_task *task) { struct nfs4_session *session = nfs4_get_session(server); int ret = 0; - if (session == NULL) { - args->sa_session = NULL; - res->sr_session = NULL; + if (session == NULL) goto out; - } dprintk("--> %s clp %p session %p sr_slot %td\n", __func__, session->clp, session, res->sr_slot ? res->sr_slot - session->fc_slot_table.slots : -1); - ret = nfs41_setup_sequence(session, args, res, cache_reply, - task); + ret = nfs41_setup_sequence(session, args, res, task); out: dprintk("<-- %s status=%d\n", __func__, ret); return ret; @@ -629,7 +633,6 @@ struct nfs41_call_sync_data { const struct nfs_server *seq_server; struct nfs4_sequence_args *seq_args; struct nfs4_sequence_res *seq_res; - int cache_reply; }; static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) @@ -639,7 +642,7 @@ static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); if (nfs4_setup_sequence(data->seq_server, data->seq_args, - data->seq_res, data->cache_reply, task)) + data->seq_res, task)) return; rpc_call_start(task); } @@ -672,7 +675,6 @@ static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, struct rpc_message *msg, struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, - int cache_reply, int privileged) { int ret; @@ -681,7 +683,6 @@ static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, .seq_server = server, .seq_args = args, .seq_res = res, - .cache_reply = cache_reply, }; struct rpc_task_setup task_setup = { .rpc_client = clnt, @@ -690,7 +691,6 @@ static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, .callback_data = &data }; - res->sr_slot = NULL; if (privileged) task_setup.callback_ops = &nfs41_call_priv_sync_ops; task = rpc_run_task(&task_setup); @@ -710,10 +710,17 @@ int _nfs4_call_sync_session(struct rpc_clnt *clnt, struct nfs4_sequence_res *res, int cache_reply) { - return nfs4_call_sync_sequence(clnt, server, msg, args, res, cache_reply, 0); + nfs41_init_sequence(args, res, cache_reply); + return nfs4_call_sync_sequence(clnt, server, msg, args, res, 0); } #else +static inline +void nfs41_init_sequence(struct nfs4_sequence_args *args, + struct nfs4_sequence_res *res, int cache_reply) +{ +} + static int nfs4_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) { @@ -728,7 +735,7 @@ int _nfs4_call_sync(struct rpc_clnt *clnt, struct nfs4_sequence_res *res, int cache_reply) { - args->sa_session = res->sr_session = NULL; + nfs41_init_sequence(args, res, cache_reply); return rpc_call_sync(clnt, msg, 0); } @@ -1449,7 +1456,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata) data->timestamp = jiffies; if (nfs4_setup_sequence(data->o_arg.server, &data->o_arg.seq_args, - &data->o_res.seq_res, 1, task)) + &data->o_res.seq_res, task)) return; rpc_call_start(task); return; @@ -1551,6 +1558,7 @@ static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) }; int status; + nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); kref_get(&data->kref); data->rpc_done = 0; data->rpc_status = 0; @@ -2030,8 +2038,9 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data) nfs_fattr_init(calldata->res.fattr); calldata->timestamp = jiffies; if (nfs4_setup_sequence(NFS_SERVER(calldata->inode), - &calldata->arg.seq_args, &calldata->res.seq_res, - 1, task)) + &calldata->arg.seq_args, + &calldata->res.seq_res, + task)) return; rpc_call_start(task); } @@ -2075,6 +2084,7 @@ int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc) calldata = kzalloc(sizeof(*calldata), gfp_mask); if (calldata == NULL) goto out; + nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); calldata->inode = state->inode; calldata->state = state; calldata->arg.fh = NFS_FH(state->inode); @@ -2713,8 +2723,8 @@ static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) args->bitmask = server->cache_consistency_bitmask; res->server = server; - res->seq_res.sr_slot = NULL; msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; + nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); } static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) @@ -2739,6 +2749,7 @@ static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; arg->bitmask = server->attr_bitmask; res->server = server; + nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); } static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, @@ -3233,6 +3244,7 @@ static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message data->timestamp = jiffies; data->read_done_cb = nfs4_read_done_cb; msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; + nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); } /* Reset the the nfs_read_data to send the read to the MDS. */ @@ -3306,6 +3318,7 @@ static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_messag data->timestamp = jiffies; msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; + nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); } static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_write_data *data) @@ -3340,6 +3353,7 @@ static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_messa data->write_done_cb = nfs4_commit_done_cb; data->res.server = server; msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; + nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); } struct nfs4_renewdata { @@ -3892,7 +3906,7 @@ static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) if (nfs4_setup_sequence(d_data->res.server, &d_data->args.seq_args, - &d_data->res.seq_res, 1, task)) + &d_data->res.seq_res, task)) return; rpc_call_start(task); } @@ -3926,6 +3940,7 @@ static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, co data = kzalloc(sizeof(*data), GFP_NOFS); if (data == NULL) return -ENOMEM; + nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); data->args.fhandle = &data->fh; data->args.stateid = &data->stateid; data->args.bitmask = server->attr_bitmask; @@ -4143,7 +4158,7 @@ static void nfs4_locku_prepare(struct rpc_task *task, void *data) calldata->timestamp = jiffies; if (nfs4_setup_sequence(calldata->server, &calldata->arg.seq_args, - &calldata->res.seq_res, 1, task)) + &calldata->res.seq_res, task)) return; rpc_call_start(task); } @@ -4183,6 +4198,7 @@ static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, return ERR_PTR(-ENOMEM); } + nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); msg.rpc_argp = &data->arg; msg.rpc_resp = &data->res; task_setup_data.callback_data = data; @@ -4298,7 +4314,7 @@ static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) data->timestamp = jiffies; if (nfs4_setup_sequence(data->server, &data->arg.seq_args, - &data->res.seq_res, 1, task)) + &data->res.seq_res, task)) return; rpc_call_start(task); dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); @@ -4416,6 +4432,7 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *f data->arg.reclaim = NFS_LOCK_RECLAIM; task_setup_data.callback_ops = &nfs4_recover_lock_ops; } + nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); msg.rpc_argp = &data->arg; msg.rpc_resp = &data->res; task_setup_data.callback_data = data; @@ -4931,7 +4948,7 @@ static void nfs4_get_lease_time_prepare(struct rpc_task *task, since we're invoked within one */ ret = nfs41_setup_sequence(data->clp->cl_session, &data->args->la_seq_args, - &data->res->lr_seq_res, 0, task); + &data->res->lr_seq_res, task); BUG_ON(ret == -EAGAIN); rpc_call_start(task); @@ -4995,6 +5012,7 @@ int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) }; int status; + nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); dprintk("--> %s\n", __func__); task = rpc_run_task(&task_setup); @@ -5468,7 +5486,7 @@ static void nfs41_sequence_prepare(struct rpc_task *task, void *data) args = task->tk_msg.rpc_argp; res = task->tk_msg.rpc_resp; - if (nfs41_setup_sequence(clp->cl_session, args, res, 0, task)) + if (nfs41_setup_sequence(clp->cl_session, args, res, task)) return; rpc_call_start(task); } @@ -5500,6 +5518,7 @@ static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_ nfs_put_client(clp); return ERR_PTR(-ENOMEM); } + nfs41_init_sequence(&calldata->args, &calldata->res, 0); msg.rpc_argp = &calldata->args; msg.rpc_resp = &calldata->res; calldata->clp = clp; @@ -5561,7 +5580,7 @@ static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); if (nfs41_setup_sequence(calldata->clp->cl_session, &calldata->arg.seq_args, - &calldata->res.seq_res, 0, task)) + &calldata->res.seq_res, task)) return; rpc_call_start(task); @@ -5640,6 +5659,7 @@ static int nfs41_proc_reclaim_complete(struct nfs_client *clp) calldata->clp = clp; calldata->arg.one_fs = 0; + nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); msg.rpc_argp = &calldata->arg; msg.rpc_resp = &calldata->res; task_setup_data.callback_data = calldata; @@ -5671,7 +5691,7 @@ nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) * to be no way to prevent it completely. */ if (nfs4_setup_sequence(server, &lgp->args.seq_args, - &lgp->res.seq_res, 0, task)) + &lgp->res.seq_res, task)) return; if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, NFS_I(lgp->args.inode)->layout, @@ -5746,6 +5766,7 @@ int nfs4_proc_layoutget(struct nfs4_layoutget *lgp) lgp->res.layoutp = &lgp->args.layout; lgp->res.seq_res.sr_slot = NULL; + nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); task = rpc_run_task(&task_setup_data); if (IS_ERR(task)) return PTR_ERR(task); @@ -5766,7 +5787,7 @@ nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) dprintk("--> %s\n", __func__); if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args, - &lrp->res.seq_res, 0, task)) + &lrp->res.seq_res, task)) return; rpc_call_start(task); } @@ -5832,6 +5853,7 @@ int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) int status; dprintk("--> %s\n", __func__); + nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); task = rpc_run_task(&task_setup_data); if (IS_ERR(task)) return PTR_ERR(task); @@ -5932,7 +5954,7 @@ static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) struct nfs_server *server = NFS_SERVER(data->args.inode); if (nfs4_setup_sequence(server, &data->args.seq_args, - &data->res.seq_res, 1, task)) + &data->res.seq_res, task)) return; rpc_call_start(task); } @@ -6019,6 +6041,7 @@ nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) data->args.lastbytewritten, data->args.inode->i_ino); + nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); task = rpc_run_task(&task_setup_data); if (IS_ERR(task)) return PTR_ERR(task); @@ -6114,7 +6137,6 @@ out: } static int _nfs41_test_stateid(struct nfs_server *server, struct nfs4_state *state) { - int status; struct nfs41_test_stateid_args args = { .stateid = &state->stateid, }; @@ -6124,9 +6146,8 @@ static int _nfs41_test_stateid(struct nfs_server *server, struct nfs4_state *sta .rpc_argp = &args, .rpc_resp = &res, }; - args.seq_args.sa_session = res.seq_res.sr_session = NULL; - status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 0, 1); - return status; + nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); + return nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); } static int nfs41_test_stateid(struct nfs_server *server, struct nfs4_state *state) @@ -6143,7 +6164,6 @@ static int nfs41_test_stateid(struct nfs_server *server, struct nfs4_state *stat static int _nfs4_free_stateid(struct nfs_server *server, struct nfs4_state *state) { - int status; struct nfs41_free_stateid_args args = { .stateid = &state->stateid, }; @@ -6154,9 +6174,8 @@ static int _nfs4_free_stateid(struct nfs_server *server, struct nfs4_state *stat .rpc_resp = &res, }; - args.seq_args.sa_session = res.seq_res.sr_session = NULL; - status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 0, 1); - return status; + nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); + return nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); } static int nfs41_free_stateid(struct nfs_server *server, struct nfs4_state *state) diff --git a/fs/nfs/read.c b/fs/nfs/read.c index cfa175c223d..3c2540d532c 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -472,7 +472,7 @@ void nfs_read_prepare(struct rpc_task *task, void *calldata) if (nfs4_setup_sequence(NFS_SERVER(data->inode), &data->args.seq_args, &data->res.seq_res, - 0, task)) + task)) return; rpc_call_start(task); } diff --git a/fs/nfs/unlink.c b/fs/nfs/unlink.c index 4f9319a2e56..490613b709b 100644 --- a/fs/nfs/unlink.c +++ b/fs/nfs/unlink.c @@ -114,7 +114,7 @@ void nfs_unlink_prepare(struct rpc_task *task, void *calldata) struct nfs_server *server = NFS_SERVER(data->dir); if (nfs4_setup_sequence(server, &data->args.seq_args, - &data->res.seq_res, 1, task)) + &data->res.seq_res, task)) return; rpc_call_start(task); } @@ -410,7 +410,7 @@ static void nfs_rename_prepare(struct rpc_task *task, void *calldata) struct nfs_server *server = NFS_SERVER(data->old_dir); if (nfs4_setup_sequence(server, &data->args.seq_args, - &data->res.seq_res, 1, task)) + &data->res.seq_res, task)) return; rpc_call_start(task); } diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 834f0fe96f8..0b1831d9584 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -1135,7 +1135,7 @@ void nfs_write_prepare(struct rpc_task *task, void *calldata) if (nfs4_setup_sequence(NFS_SERVER(data->inode), &data->args.seq_args, - &data->res.seq_res, 1, task)) + &data->res.seq_res, task)) return; rpc_call_start(task); } -- cgit v1.2.3-70-g09d2 From 48c22eb21071a3524f8b6e587371be35b5e86969 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 17 Jan 2012 22:04:25 -0500 Subject: NFS: Move struct nfs_unique_id into struct nfs_seqid_counter Signed-off-by: Trond Myklebust --- fs/nfs/nfs4_fs.h | 8 ++++++-- fs/nfs/nfs4proc.c | 10 +++++----- fs/nfs/nfs4state.c | 10 +++++----- 3 files changed, 16 insertions(+), 12 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index c4025ae1d07..df3d02c3e8c 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -53,8 +53,14 @@ struct nfs4_minor_version_ops { const struct nfs4_state_maintenance_ops *state_renewal_ops; }; +struct nfs_unique_id { + struct rb_node rb_node; + __u64 id; +}; + #define NFS_SEQID_CONFIRMED 1 struct nfs_seqid_counter { + int owner_id; int flags; u32 counter; spinlock_t lock; /* Protects the list */ @@ -91,7 +97,6 @@ struct nfs4_state_owner { unsigned long so_flags; struct list_head so_states; struct nfs_seqid_counter so_seqid; - int so_owner_id; }; enum { @@ -131,7 +136,6 @@ struct nfs4_lock_state { struct nfs4_state * ls_state; /* Pointer to open state */ #define NFS_LOCK_INITIALIZED 1 int ls_flags; - int ls_id; struct nfs_seqid_counter ls_seqid; nfs4_stateid ls_stateid; atomic_t ls_count; diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 8926d33383e..88a8b6999b4 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -822,7 +822,7 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, p->o_arg.open_flags = flags; p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); p->o_arg.clientid = server->nfs_client->cl_clientid; - p->o_arg.id = sp->so_owner_id; + p->o_arg.id = sp->so_seqid.owner_id; p->o_arg.name = &dentry->d_name; p->o_arg.server = server; p->o_arg.bitmask = server->attr_bitmask; @@ -1447,7 +1447,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata) rcu_read_unlock(); } /* Update sequence id. */ - data->o_arg.id = sp->so_owner_id; + data->o_arg.id = sp->so_seqid.owner_id; data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; @@ -4032,7 +4032,7 @@ static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock if (status != 0) goto out; lsp = request->fl_u.nfs4_fl.owner; - arg.lock_owner.id = lsp->ls_id; + arg.lock_owner.id = lsp->ls_seqid.owner_id; arg.lock_owner.s_dev = server->s_dev; status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); switch (status) { @@ -4278,7 +4278,7 @@ static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, goto out_free_seqid; p->arg.lock_stateid = &lsp->ls_stateid; p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; - p->arg.lock_owner.id = lsp->ls_id; + p->arg.lock_owner.id = lsp->ls_seqid.owner_id; p->arg.lock_owner.s_dev = server->s_dev; p->res.lock_seqid = p->arg.lock_seqid; p->lsp = lsp; @@ -4696,7 +4696,7 @@ void nfs4_release_lockowner(const struct nfs4_lock_state *lsp) if (!args) return; args->lock_owner.clientid = server->nfs_client->cl_clientid; - args->lock_owner.id = lsp->ls_id; + args->lock_owner.id = lsp->ls_seqid.owner_id; args->lock_owner.s_dev = server->s_dev; msg.rpc_argp = args; rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args); diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index cf7bc39aa0e..a42e60d3ee5 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -366,7 +366,7 @@ nfs4_insert_state_owner_locked(struct nfs4_state_owner *new) return sp; } } - err = ida_get_new(&server->openowner_id, &new->so_owner_id); + err = ida_get_new(&server->openowner_id, &new->so_seqid.owner_id); if (err) return ERR_PTR(err); rb_link_node(&new->so_server_node, parent, p); @@ -381,7 +381,7 @@ nfs4_remove_state_owner_locked(struct nfs4_state_owner *sp) if (!RB_EMPTY_NODE(&sp->so_server_node)) rb_erase(&sp->so_server_node, &server->state_owners); - ida_remove(&server->openowner_id, sp->so_owner_id); + ida_remove(&server->openowner_id, sp->so_seqid.owner_id); } static void @@ -775,8 +775,8 @@ static struct nfs4_lock_state *nfs4_alloc_lock_state(struct nfs4_state *state, f default: goto out_free; } - lsp->ls_id = ida_simple_get(&server->lockowner_id, 0, 0, GFP_NOFS); - if (lsp->ls_id < 0) + lsp->ls_seqid.owner_id = ida_simple_get(&server->lockowner_id, 0, 0, GFP_NOFS); + if (lsp->ls_seqid.owner_id < 0) goto out_free; INIT_LIST_HEAD(&lsp->ls_locks); return lsp; @@ -789,7 +789,7 @@ static void nfs4_free_lock_state(struct nfs4_lock_state *lsp) { struct nfs_server *server = lsp->ls_state->owner->so_server; - ida_simple_remove(&server->lockowner_id, lsp->ls_id); + ida_simple_remove(&server->lockowner_id, lsp->ls_seqid.owner_id); nfs4_destroy_seqid_counter(&lsp->ls_seqid); kfree(lsp); } -- cgit v1.2.3-70-g09d2 From 536e43d12b9517bbbf6114cd1a12be27857a4d7a Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 17 Jan 2012 22:04:26 -0500 Subject: NFS: Optimise away unnecessary setattrs for open(O_TRUNC); Currently, we will correctly optimise away a truncate that doesn't change the file size. However, in the case of open(O_TRUNC), we also want to optimise away the time changes. Signed-off-by: Trond Myklebust --- fs/nfs/dir.c | 25 +++++++++++++++++++------ fs/nfs/inode.c | 4 ++-- fs/nfs/nfs4proc.c | 10 +++++++--- 3 files changed, 28 insertions(+), 11 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index fd9a872fada..bb132a88f4e 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -1429,6 +1429,7 @@ static struct dentry *nfs_atomic_lookup(struct inode *dir, struct dentry *dentry } open_flags = nd->intent.open.flags; + attr.ia_valid = 0; ctx = create_nfs_open_context(dentry, open_flags); res = ERR_CAST(ctx); @@ -1437,11 +1438,14 @@ static struct dentry *nfs_atomic_lookup(struct inode *dir, struct dentry *dentry if (nd->flags & LOOKUP_CREATE) { attr.ia_mode = nd->intent.open.create_mode; - attr.ia_valid = ATTR_MODE; + attr.ia_valid |= ATTR_MODE; attr.ia_mode &= ~current_umask(); - } else { + } else open_flags &= ~(O_EXCL | O_CREAT); - attr.ia_valid = 0; + + if (open_flags & O_TRUNC) { + attr.ia_valid |= ATTR_SIZE; + attr.ia_size = 0; } /* Open the file on the server */ @@ -1495,6 +1499,7 @@ static int nfs_open_revalidate(struct dentry *dentry, struct nameidata *nd) struct inode *inode; struct inode *dir; struct nfs_open_context *ctx; + struct iattr attr; int openflags, ret = 0; if (nd->flags & LOOKUP_RCU) @@ -1523,19 +1528,27 @@ static int nfs_open_revalidate(struct dentry *dentry, struct nameidata *nd) /* We cannot do exclusive creation on a positive dentry */ if ((openflags & (O_CREAT|O_EXCL)) == (O_CREAT|O_EXCL)) goto no_open_dput; - /* We can't create new files, or truncate existing ones here */ - openflags &= ~(O_CREAT|O_EXCL|O_TRUNC); + /* We can't create new files here */ + openflags &= ~(O_CREAT|O_EXCL); ctx = create_nfs_open_context(dentry, openflags); ret = PTR_ERR(ctx); if (IS_ERR(ctx)) goto out; + + attr.ia_valid = 0; + if (openflags & O_TRUNC) { + attr.ia_valid |= ATTR_SIZE; + attr.ia_size = 0; + nfs_wb_all(inode); + } + /* * Note: we're not holding inode->i_mutex and so may be racing with * operations that change the directory. We therefore save the * change attribute *before* we do the RPC call. */ - inode = NFS_PROTO(dir)->open_context(dir, ctx, openflags, NULL); + inode = NFS_PROTO(dir)->open_context(dir, ctx, openflags, &attr); if (IS_ERR(inode)) { ret = PTR_ERR(inode); switch (ret) { diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 577ad5a72a2..65486e65294 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -402,7 +402,7 @@ out_no_inode: goto out; } -#define NFS_VALID_ATTRS (ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_SIZE|ATTR_ATIME|ATTR_ATIME_SET|ATTR_MTIME|ATTR_MTIME_SET|ATTR_FILE) +#define NFS_VALID_ATTRS (ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_SIZE|ATTR_ATIME|ATTR_ATIME_SET|ATTR_MTIME|ATTR_MTIME_SET|ATTR_FILE|ATTR_OPEN) int nfs_setattr(struct dentry *dentry, struct iattr *attr) @@ -424,7 +424,7 @@ nfs_setattr(struct dentry *dentry, struct iattr *attr) /* Optimization: if the end result is no change, don't RPC */ attr->ia_valid &= NFS_VALID_ATTRS; - if ((attr->ia_valid & ~ATTR_FILE) == 0) + if ((attr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0) return 0; /* Write all dirty data */ diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 88a8b6999b4..360240cc1e9 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -828,7 +828,7 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, p->o_arg.bitmask = server->attr_bitmask; p->o_arg.dir_bitmask = server->cache_consistency_bitmask; p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; - if (flags & O_CREAT) { + if (attrs != NULL && attrs->ia_valid != 0) { u32 *s; p->o_arg.u.attrs = &p->attrs; @@ -885,7 +885,7 @@ static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode { int ret = 0; - if (open_mode & O_EXCL) + if (open_mode & (O_EXCL|O_TRUNC)) goto out; switch (mode & (FMODE_READ|FMODE_WRITE)) { case FMODE_READ: @@ -1033,7 +1033,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) struct nfs4_state *state = opendata->state; struct nfs_inode *nfsi = NFS_I(state->inode); struct nfs_delegation *delegation; - int open_mode = opendata->o_arg.open_flags & O_EXCL; + int open_mode = opendata->o_arg.open_flags & (O_EXCL|O_TRUNC); fmode_t fmode = opendata->o_arg.fmode; nfs4_stateid stateid; int ret = -EAGAIN; @@ -2431,6 +2431,10 @@ nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, } } + /* Deal with open(O_TRUNC) */ + if (sattr->ia_valid & ATTR_OPEN) + sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); + status = nfs4_do_setattr(inode, cred, fattr, sattr, state); if (status == 0) nfs_setattr_update_inode(inode, sattr); -- cgit v1.2.3-70-g09d2 From 961a828df64979d2a9faeeeee043391670a193b9 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 17 Jan 2012 22:57:37 -0500 Subject: SUNRPC: Fix potential races in xprt_lock_write_next() We have to ensure that the wake up from the waitqueue and the assignment of xprt->snd_task are atomic. We can do this by assigning the snd_task while under the waitqueue spinlock. Signed-off-by: Trond Myklebust --- fs/nfs/nfs4_fs.h | 1 + fs/nfs/nfs4proc.c | 13 +++++++----- fs/nfs/nfs4state.c | 17 ++++++++------- include/linux/sunrpc/sched.h | 3 +++ net/sunrpc/sched.c | 42 +++++++++++++++++++++++++++++-------- net/sunrpc/xprt.c | 49 +++++++++++++++++++++++--------------------- 6 files changed, 79 insertions(+), 46 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index df3d02c3e8c..c45c21a5470 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -222,6 +222,7 @@ static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *ser return server->nfs_client->cl_session; } +extern bool nfs4_set_task_privileged(struct rpc_task *task, void *dummy); extern int nfs4_setup_sequence(const struct nfs_server *server, struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, struct rpc_task *task); diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 360240cc1e9..828a76590af 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -385,17 +385,20 @@ nfs4_free_slot(struct nfs4_slot_table *tbl, u8 free_slotid) free_slotid, tbl->highest_used_slotid); } +bool nfs4_set_task_privileged(struct rpc_task *task, void *dummy) +{ + rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); + return true; +} + /* * Signal state manager thread if session fore channel is drained */ static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) { - struct rpc_task *task; - if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { - task = rpc_wake_up_next(&ses->fc_slot_table.slot_tbl_waitq); - if (task) - rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); + rpc_wake_up_first(&ses->fc_slot_table.slot_tbl_waitq, + nfs4_set_task_privileged, NULL); return; } diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index a42e60d3ee5..f0e9881c2aa 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -190,23 +190,22 @@ static int nfs41_setup_state_renewal(struct nfs_client *clp) static void nfs4_end_drain_session(struct nfs_client *clp) { struct nfs4_session *ses = clp->cl_session; + struct nfs4_slot_table *tbl; int max_slots; if (ses == NULL) return; + tbl = &ses->fc_slot_table; if (test_and_clear_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { - spin_lock(&ses->fc_slot_table.slot_tbl_lock); - max_slots = ses->fc_slot_table.max_slots; + spin_lock(&tbl->slot_tbl_lock); + max_slots = tbl->max_slots; while (max_slots--) { - struct rpc_task *task; - - task = rpc_wake_up_next(&ses->fc_slot_table. - slot_tbl_waitq); - if (!task) + if (rpc_wake_up_first(&tbl->slot_tbl_waitq, + nfs4_set_task_privileged, + NULL) == NULL) break; - rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); } - spin_unlock(&ses->fc_slot_table.slot_tbl_lock); + spin_unlock(&tbl->slot_tbl_lock); } } diff --git a/include/linux/sunrpc/sched.h b/include/linux/sunrpc/sched.h index b16243a35f0..bd337f990a4 100644 --- a/include/linux/sunrpc/sched.h +++ b/include/linux/sunrpc/sched.h @@ -235,6 +235,9 @@ void rpc_wake_up_queued_task(struct rpc_wait_queue *, struct rpc_task *); void rpc_wake_up(struct rpc_wait_queue *); struct rpc_task *rpc_wake_up_next(struct rpc_wait_queue *); +struct rpc_task *rpc_wake_up_first(struct rpc_wait_queue *, + bool (*)(struct rpc_task *, void *), + void *); void rpc_wake_up_status(struct rpc_wait_queue *, int); int rpc_queue_empty(struct rpc_wait_queue *); void rpc_delay(struct rpc_task *, unsigned long); diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c index 3341d896278..f982dfe5399 100644 --- a/net/sunrpc/sched.c +++ b/net/sunrpc/sched.c @@ -422,7 +422,7 @@ EXPORT_SYMBOL_GPL(rpc_wake_up_queued_task); /* * Wake up the next task on a priority queue. */ -static struct rpc_task * __rpc_wake_up_next_priority(struct rpc_wait_queue *queue) +static struct rpc_task *__rpc_find_next_queued_priority(struct rpc_wait_queue *queue) { struct list_head *q; struct rpc_task *task; @@ -467,30 +467,54 @@ new_queue: new_owner: rpc_set_waitqueue_owner(queue, task->tk_owner); out: - rpc_wake_up_task_queue_locked(queue, task); return task; } +static struct rpc_task *__rpc_find_next_queued(struct rpc_wait_queue *queue) +{ + if (RPC_IS_PRIORITY(queue)) + return __rpc_find_next_queued_priority(queue); + if (!list_empty(&queue->tasks[0])) + return list_first_entry(&queue->tasks[0], struct rpc_task, u.tk_wait.list); + return NULL; +} + /* - * Wake up the next task on the wait queue. + * Wake up the first task on the wait queue. */ -struct rpc_task * rpc_wake_up_next(struct rpc_wait_queue *queue) +struct rpc_task *rpc_wake_up_first(struct rpc_wait_queue *queue, + bool (*func)(struct rpc_task *, void *), void *data) { struct rpc_task *task = NULL; - dprintk("RPC: wake_up_next(%p \"%s\")\n", + dprintk("RPC: wake_up_first(%p \"%s\")\n", queue, rpc_qname(queue)); spin_lock_bh(&queue->lock); - if (RPC_IS_PRIORITY(queue)) - task = __rpc_wake_up_next_priority(queue); - else { - task_for_first(task, &queue->tasks[0]) + task = __rpc_find_next_queued(queue); + if (task != NULL) { + if (func(task, data)) rpc_wake_up_task_queue_locked(queue, task); + else + task = NULL; } spin_unlock_bh(&queue->lock); return task; } +EXPORT_SYMBOL_GPL(rpc_wake_up_first); + +static bool rpc_wake_up_next_func(struct rpc_task *task, void *data) +{ + return true; +} + +/* + * Wake up the next task on the wait queue. +*/ +struct rpc_task *rpc_wake_up_next(struct rpc_wait_queue *queue) +{ + return rpc_wake_up_first(queue, rpc_wake_up_next_func, NULL); +} EXPORT_SYMBOL_GPL(rpc_wake_up_next); /** diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c index c64c0ef519b..839f6ef2326 100644 --- a/net/sunrpc/xprt.c +++ b/net/sunrpc/xprt.c @@ -292,54 +292,57 @@ static inline int xprt_lock_write(struct rpc_xprt *xprt, struct rpc_task *task) return retval; } -static void __xprt_lock_write_next(struct rpc_xprt *xprt) +static bool __xprt_lock_write_func(struct rpc_task *task, void *data) { - struct rpc_task *task; + struct rpc_xprt *xprt = data; struct rpc_rqst *req; - if (test_and_set_bit(XPRT_LOCKED, &xprt->state)) - return; - - task = rpc_wake_up_next(&xprt->sending); - if (task == NULL) - goto out_unlock; - req = task->tk_rqstp; xprt->snd_task = task; if (req) { req->rq_bytes_sent = 0; req->rq_ntrans++; } - return; + return true; +} -out_unlock: +static void __xprt_lock_write_next(struct rpc_xprt *xprt) +{ + if (test_and_set_bit(XPRT_LOCKED, &xprt->state)) + return; + + if (rpc_wake_up_first(&xprt->sending, __xprt_lock_write_func, xprt)) + return; xprt_clear_locked(xprt); } -static void __xprt_lock_write_next_cong(struct rpc_xprt *xprt) +static bool __xprt_lock_write_cong_func(struct rpc_task *task, void *data) { - struct rpc_task *task; + struct rpc_xprt *xprt = data; struct rpc_rqst *req; - if (test_and_set_bit(XPRT_LOCKED, &xprt->state)) - return; - if (RPCXPRT_CONGESTED(xprt)) - goto out_unlock; - task = rpc_wake_up_next(&xprt->sending); - if (task == NULL) - goto out_unlock; - req = task->tk_rqstp; if (req == NULL) { xprt->snd_task = task; - return; + return true; } if (__xprt_get_cong(xprt, task)) { xprt->snd_task = task; req->rq_bytes_sent = 0; req->rq_ntrans++; - return; + return true; } + return false; +} + +static void __xprt_lock_write_next_cong(struct rpc_xprt *xprt) +{ + if (test_and_set_bit(XPRT_LOCKED, &xprt->state)) + return; + if (RPCXPRT_CONGESTED(xprt)) + goto out_unlock; + if (rpc_wake_up_first(&xprt->sending, __xprt_lock_write_cong_func, xprt)) + return; out_unlock: xprt_clear_locked(xprt); } -- cgit v1.2.3-70-g09d2 From a4980e7840176b4baa60715c32c5994b084ea9a6 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 30 Jan 2012 15:43:56 -0500 Subject: NFSv4: ACCESS validation doesn't require a full attribute refresh We only really need to check the change attribute, so let's just use the server->cache_consistency_bitmask. Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 828a76590af..1bb0be36a72 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2512,7 +2512,7 @@ static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry struct nfs_server *server = NFS_SERVER(inode); struct nfs4_accessargs args = { .fh = NFS_FH(inode), - .bitmask = server->attr_bitmask, + .bitmask = server->cache_consistency_bitmask, }; struct nfs4_accessres res = { .server = server, -- cgit v1.2.3-70-g09d2 From 1cab0652ba985d11b67645bd344c39ebb6cd28a2 Mon Sep 17 00:00:00 2001 From: Bryan Schumaker Date: Tue, 31 Jan 2012 10:39:29 -0500 Subject: NFS: Pass a stateid to test_stateid() and free_stateid() This takes the guesswork out of what stateid to use. The caller is expected to figure this out and pass in the correct one. Signed-off-by: Bryan Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 37 ++++++++++++++++++++++--------------- fs/nfs/nfs4xdr.c | 3 ++- 2 files changed, 24 insertions(+), 16 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 1bb0be36a72..8491d775e23 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -82,8 +82,8 @@ static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, struct nfs_fattr *fattr, struct iattr *sattr, struct nfs4_state *state); #ifdef CONFIG_NFS_V4_1 -static int nfs41_test_stateid(struct nfs_server *, struct nfs4_state *); -static int nfs41_free_stateid(struct nfs_server *, struct nfs4_state *); +static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *); +static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *); #endif /* Prevent leaks of NFSv4 errors into userland */ static int nfs4_map_errors(int err) @@ -1728,10 +1728,10 @@ static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *st int status; struct nfs_server *server = NFS_SERVER(state->inode); - status = nfs41_test_stateid(server, state); + status = nfs41_test_stateid(server, &state->stateid); if (status == NFS_OK) return 0; - nfs41_free_stateid(server, state); + nfs41_free_stateid(server, &state->stateid); return nfs4_open_expired(sp, state); } #endif @@ -4509,10 +4509,10 @@ static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *reques int status; struct nfs_server *server = NFS_SERVER(state->inode); - status = nfs41_test_stateid(server, state); + status = nfs41_test_stateid(server, &state->stateid); if (status == NFS_OK) return 0; - nfs41_free_stateid(server, state); + nfs41_free_stateid(server, &state->stateid); return nfs4_lock_expired(state, request); } #endif @@ -6142,10 +6142,12 @@ out_freepage: out: return err; } -static int _nfs41_test_stateid(struct nfs_server *server, struct nfs4_state *state) + +static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) { + int status; struct nfs41_test_stateid_args args = { - .stateid = &state->stateid, + .stateid = stateid, }; struct nfs41_test_stateid_res res; struct rpc_message msg = { @@ -6153,26 +6155,31 @@ static int _nfs41_test_stateid(struct nfs_server *server, struct nfs4_state *sta .rpc_argp = &args, .rpc_resp = &res, }; + nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); - return nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); + status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); + + if (status == NFS_OK) + return res.status; + return status; } -static int nfs41_test_stateid(struct nfs_server *server, struct nfs4_state *state) +static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) { struct nfs4_exception exception = { }; int err; do { err = nfs4_handle_exception(server, - _nfs41_test_stateid(server, state), + _nfs41_test_stateid(server, stateid), &exception); } while (exception.retry); return err; } -static int _nfs4_free_stateid(struct nfs_server *server, struct nfs4_state *state) +static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) { struct nfs41_free_stateid_args args = { - .stateid = &state->stateid, + .stateid = stateid, }; struct nfs41_free_stateid_res res; struct rpc_message msg = { @@ -6185,13 +6192,13 @@ static int _nfs4_free_stateid(struct nfs_server *server, struct nfs4_state *stat return nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); } -static int nfs41_free_stateid(struct nfs_server *server, struct nfs4_state *state) +static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) { struct nfs4_exception exception = { }; int err; do { err = nfs4_handle_exception(server, - _nfs4_free_stateid(server, state), + _nfs4_free_stateid(server, stateid), &exception); } while (exception.retry); return err; diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index ca288d115b5..5d1caac0656 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -5671,7 +5671,8 @@ static int decode_test_stateid(struct xdr_stream *xdr, if (unlikely(!p)) goto out_overflow; res->status = be32_to_cpup(p++); - return res->status; + + return status; out_overflow: print_overflow_msg(__func__, xdr); out: -- cgit v1.2.3-70-g09d2 From b01dd1d8fae6178cbec374b90da2e4a3b8dce9ba Mon Sep 17 00:00:00 2001 From: Bryan Schumaker Date: Tue, 31 Jan 2012 10:39:30 -0500 Subject: NFS: Call test_stateid() and free_stateid() with correct stateids I noticed that test_stateid() was always using the same stateid for open and lock recovery. After poking around a bit, I discovered that it was always testing with a delegation stateid (even if there was no delegation present). I figured this wasn't correct, so now delegation and open stateids are tested during open_expired() and lock stateids are tested during lock_expired(). Signed-off-by: Bryan Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 58 ++++++++++++++++++++++++++++++++++++++++++++----------- 1 file changed, 47 insertions(+), 11 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 8491d775e23..aaaf98ba895 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -1723,15 +1723,32 @@ static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *sta } #if defined(CONFIG_NFS_V4_1) -static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) +static int nfs41_check_expired_stateid(struct nfs4_state *state, nfs4_stateid *stateid, unsigned int flags) { - int status; + int status = NFS_OK; struct nfs_server *server = NFS_SERVER(state->inode); - status = nfs41_test_stateid(server, &state->stateid); - if (status == NFS_OK) - return 0; - nfs41_free_stateid(server, &state->stateid); + if (state->flags & flags) { + status = nfs41_test_stateid(server, stateid); + if (status != NFS_OK) { + nfs41_free_stateid(server, stateid); + state->flags &= ~flags; + } + } + return status; +} + +static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) +{ + int deleg_status, open_status; + int deleg_flags = 1 << NFS_DELEGATED_STATE; + int open_flags = (1 << NFS_O_RDONLY_STATE) | (1 << NFS_O_WRONLY_STATE) | (1 << NFS_O_RDWR_STATE); + + deleg_status = nfs41_check_expired_stateid(state, &state->stateid, deleg_flags); + open_status = nfs41_check_expired_stateid(state, &state->open_stateid, open_flags); + + if ((deleg_status == NFS_OK) && (open_status == NFS_OK)) + return NFS_OK; return nfs4_open_expired(sp, state); } #endif @@ -4504,15 +4521,34 @@ out: } #if defined(CONFIG_NFS_V4_1) -static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) +static int nfs41_check_expired_locks(struct nfs4_state *state) { - int status; + int status, ret = NFS_OK; + struct nfs4_lock_state *lsp; struct nfs_server *server = NFS_SERVER(state->inode); - status = nfs41_test_stateid(server, &state->stateid); + list_for_each_entry(lsp, &state->lock_states, ls_locks) { + if (lsp->ls_flags & NFS_LOCK_INITIALIZED) { + status = nfs41_test_stateid(server, &lsp->ls_stateid); + if (status != NFS_OK) { + nfs41_free_stateid(server, &lsp->ls_stateid); + lsp->ls_flags &= ~NFS_LOCK_INITIALIZED; + ret = status; + } + } + }; + + return ret; +} + +static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) +{ + int status = NFS_OK; + + if (test_bit(LK_STATE_IN_USE, &state->flags)) + status = nfs41_check_expired_locks(state); if (status == NFS_OK) - return 0; - nfs41_free_stateid(server, &state->stateid); + return status; return nfs4_lock_expired(state, request); } #endif -- cgit v1.2.3-70-g09d2 From f9fd2d9c1f3b512c9794abbbd76c77a6e6de57aa Mon Sep 17 00:00:00 2001 From: Weston Andros Adamson Date: Thu, 26 Jan 2012 13:32:22 -0500 Subject: NFS: printks in fs/nfs/ should start with NFS: Messages like "Got error -10052 from the server on DESTROY_SESSION. Session has been destroyed regardless" can be confusing to users who aren't very familiar with NFS. NOTE: This patch ignores any printks() that start by printing __func__ - that will be in a separate patch. Signed-off-by: Weston Andros Adamson Signed-off-by: Trond Myklebust --- fs/nfs/idmap.c | 3 ++- fs/nfs/nfs4filelayout.c | 2 +- fs/nfs/nfs4proc.c | 2 +- fs/nfs/nfs4state.c | 2 +- fs/nfs/nfs4xdr.c | 2 +- 5 files changed, 6 insertions(+), 5 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/idmap.c b/fs/nfs/idmap.c index ff084d258c4..91b1e2a8214 100644 --- a/fs/nfs/idmap.c +++ b/fs/nfs/idmap.c @@ -175,7 +175,8 @@ int nfs_idmap_init(void) struct key *keyring; int ret = 0; - printk(KERN_NOTICE "Registering the %s key type\n", key_type_id_resolver.name); + printk(KERN_NOTICE "NFS: Registering the %s key type\n", + key_type_id_resolver.name); cred = prepare_kernel_cred(NULL); if (!cred) diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c index b4f8f9624af..9a058b8c288 100644 --- a/fs/nfs/nfs4filelayout.c +++ b/fs/nfs/nfs4filelayout.c @@ -575,7 +575,7 @@ filelayout_decode_layout(struct pnfs_layout_hdr *flo, goto out_err_free; fl->fh_array[i]->size = be32_to_cpup(p++); if (sizeof(struct nfs_fh) < fl->fh_array[i]->size) { - printk(KERN_ERR "Too big fh %d received %d\n", + printk(KERN_ERR "NFS: Too big fh %d received %d\n", i, fl->fh_array[i]->size); goto out_err_free; } diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index aaaf98ba895..34e525549f8 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -5406,7 +5406,7 @@ int nfs4_proc_destroy_session(struct nfs4_session *session) if (status) printk(KERN_WARNING - "Got error %d from the server on DESTROY_SESSION. " + "NFS: Got error %d from the server on DESTROY_SESSION. " "Session has been destroyed regardless...\n", status); dprintk("<-- nfs4_proc_destroy_session\n"); diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 7d098604802..b43a65d7fac 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -1764,7 +1764,7 @@ static void nfs4_state_manager(struct nfs_client *clp) } while (atomic_read(&clp->cl_count) > 1); return; out_error: - printk(KERN_WARNING "Error: state manager failed on NFSv4 server %s" + printk(KERN_WARNING "NFS: state manager failed on NFSv4 server %s" " with error %d\n", clp->cl_hostname, -status); nfs4_end_drain_session(clp); nfs4_clear_state_manager_bit(clp); diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 5d1caac0656..2adcc979e5d 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -1023,7 +1023,7 @@ static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const * Now we backfill the bitmap and the attribute buffer length. */ if (len != ((char *)p - (char *)q) + 4) { - printk(KERN_ERR "nfs: Attr length error, %u != %Zu\n", + printk(KERN_ERR "NFS: Attr length error, %u != %Zu\n", len, ((char *)p - (char *)q) + 4); BUG(); } -- cgit v1.2.3-70-g09d2 From a030889a01d1bea921e1a7501010b7b891d2abd2 Mon Sep 17 00:00:00 2001 From: Weston Andros Adamson Date: Thu, 26 Jan 2012 13:32:23 -0500 Subject: NFS: start printks w/ NFS: even if __func__ shown This patch addresses printks that have some context to show that they are from fs/nfs/, but for the sake of consistency now start with NFS: Signed-off-by: Weston Andros Adamson Signed-off-by: Trond Myklebust --- fs/nfs/blocklayout/blocklayoutdev.c | 2 +- fs/nfs/blocklayout/blocklayoutdm.c | 2 +- fs/nfs/callback.c | 2 +- fs/nfs/callback_xdr.c | 6 +++--- fs/nfs/idmap.c | 6 ++++-- fs/nfs/inode.c | 2 +- fs/nfs/nfs4filelayout.c | 6 ++++-- fs/nfs/nfs4filelayoutdev.c | 10 +++++----- fs/nfs/nfs4proc.c | 7 ++++--- fs/nfs/nfs4state.c | 12 ++++++------ fs/nfs/nfs4xdr.c | 10 +++++----- fs/nfs/objlayout/objio_osd.c | 6 +++--- fs/nfs/objlayout/objlayout.c | 6 +++--- fs/nfs/pnfs.c | 14 +++++++------- 14 files changed, 48 insertions(+), 43 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/blocklayout/blocklayoutdev.c b/fs/nfs/blocklayout/blocklayoutdev.c index 94ed978860c..b48f782a94a 100644 --- a/fs/nfs/blocklayout/blocklayoutdev.c +++ b/fs/nfs/blocklayout/blocklayoutdev.c @@ -46,7 +46,7 @@ static int decode_sector_number(__be32 **rp, sector_t *sp) *rp = xdr_decode_hyper(*rp, &s); if (s & 0x1ff) { - printk(KERN_WARNING "%s: sector not aligned\n", __func__); + printk(KERN_WARNING "NFS: %s: sector not aligned\n", __func__); return -1; } *sp = s >> SECTOR_SHIFT; diff --git a/fs/nfs/blocklayout/blocklayoutdm.c b/fs/nfs/blocklayout/blocklayoutdm.c index 970490f556d..a0f588fa49c 100644 --- a/fs/nfs/blocklayout/blocklayoutdm.c +++ b/fs/nfs/blocklayout/blocklayoutdm.c @@ -91,7 +91,7 @@ static void nfs4_blk_metadev_release(struct pnfs_block_dev *bdev) dprintk("%s Releasing\n", __func__); rv = nfs4_blkdev_put(bdev->bm_mdev); if (rv) - printk(KERN_ERR "%s nfs4_blkdev_put returns %d\n", + printk(KERN_ERR "NFS: %s nfs4_blkdev_put returns %d\n", __func__, rv); dev_remove(bdev->net, bdev->bm_mdev->bd_dev); diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c index d81040a7efc..4a122ae7176 100644 --- a/fs/nfs/callback.c +++ b/fs/nfs/callback.c @@ -85,7 +85,7 @@ nfs4_callback_svc(void *vrqstp) } if (err < 0) { if (err != preverr) { - printk(KERN_WARNING "%s: unexpected error " + printk(KERN_WARNING "NFS: %s: unexpected error " "from svc_recv (%d)\n", __func__, err); preverr = err; } diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c index d50b2742f23..2f45aa71742 100644 --- a/fs/nfs/callback_xdr.c +++ b/fs/nfs/callback_xdr.c @@ -73,7 +73,7 @@ static __be32 *read_buf(struct xdr_stream *xdr, int nbytes) p = xdr_inline_decode(xdr, nbytes); if (unlikely(p == NULL)) - printk(KERN_WARNING "NFSv4 callback reply buffer overflowed!\n"); + printk(KERN_WARNING "NFS: NFSv4 callback reply buffer overflowed!\n"); return p; } @@ -155,7 +155,7 @@ static __be32 decode_compound_hdr_arg(struct xdr_stream *xdr, struct cb_compound return status; /* We do not like overly long tags! */ if (hdr->taglen > CB_OP_TAGLEN_MAXSZ - 12) { - printk("NFSv4 CALLBACK %s: client sent tag of length %u\n", + printk("NFS: NFSv4 CALLBACK %s: client sent tag of length %u\n", __func__, hdr->taglen); return htonl(NFS4ERR_RESOURCE); } @@ -167,7 +167,7 @@ static __be32 decode_compound_hdr_arg(struct xdr_stream *xdr, struct cb_compound if (hdr->minorversion <= 1) { hdr->cb_ident = ntohl(*p++); /* ignored by v4.1 */ } else { - printk(KERN_WARNING "%s: NFSv4 server callback with " + printk(KERN_WARNING "NFS: %s: NFSv4 server callback with " "illegal minor version %u!\n", __func__, hdr->minorversion); return htonl(NFS4ERR_MINOR_VERS_MISMATCH); diff --git a/fs/nfs/idmap.c b/fs/nfs/idmap.c index 91b1e2a8214..62264e0b1dd 100644 --- a/fs/nfs/idmap.c +++ b/fs/nfs/idmap.c @@ -558,11 +558,13 @@ static int __rpc_pipefs_event(struct nfs_client *clp, unsigned long event, * here. */ if (rpc_rmdir(parent)) - printk(KERN_ERR "%s: failed to remove clnt dir!\n", __func__); + printk(KERN_ERR "NFS: %s: failed to remove " + "clnt dir!\n", __func__); } break; default: - printk(KERN_ERR "%s: unknown event: %ld\n", __func__, event); + printk(KERN_ERR "NFS: %s: unknown event: %ld\n", __func__, + event); return -ENOTSUPP; } return err; diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index d2c760e193f..028464bcbe0 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -1407,7 +1407,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) /* * Big trouble! The inode has become a different object. */ - printk(KERN_DEBUG "%s: inode %ld mode changed, %07o to %07o\n", + printk(KERN_DEBUG "NFS: %s: inode %ld mode changed, %07o to %07o\n", __func__, inode->i_ino, inode->i_mode, fattr->mode); out_err: /* diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c index 9a058b8c288..79be7acc9ba 100644 --- a/fs/nfs/nfs4filelayout.c +++ b/fs/nfs/nfs4filelayout.c @@ -367,7 +367,8 @@ filelayout_write_pagelist(struct nfs_write_data *data, int sync) idx = nfs4_fl_calc_ds_index(lseg, j); ds = nfs4_fl_prepare_ds(lseg, idx); if (!ds) { - printk(KERN_ERR "%s: prepare_ds failed, use MDS\n", __func__); + printk(KERN_ERR "NFS: %s: prepare_ds failed, use MDS\n", + __func__); set_bit(lo_fail_bit(IOMODE_RW), &lseg->pls_layout->plh_flags); set_bit(lo_fail_bit(IOMODE_READ), &lseg->pls_layout->plh_flags); return PNFS_NOT_ATTEMPTED; @@ -797,7 +798,8 @@ static int filelayout_initiate_commit(struct nfs_write_data *data, int how) idx = calc_ds_index_from_commit(lseg, data->ds_commit_index); ds = nfs4_fl_prepare_ds(lseg, idx); if (!ds) { - printk(KERN_ERR "%s: prepare_ds failed, use MDS\n", __func__); + printk(KERN_ERR "NFS: %s: prepare_ds failed, use MDS\n", + __func__); set_bit(lo_fail_bit(IOMODE_RW), &lseg->pls_layout->plh_flags); set_bit(lo_fail_bit(IOMODE_READ), &lseg->pls_layout->plh_flags); prepare_to_resend_writes(data); diff --git a/fs/nfs/nfs4filelayoutdev.c b/fs/nfs/nfs4filelayoutdev.c index 6eb59b044bf..80fce8dade2 100644 --- a/fs/nfs/nfs4filelayoutdev.c +++ b/fs/nfs/nfs4filelayoutdev.c @@ -554,7 +554,7 @@ decode_device(struct inode *ino, struct pnfs_device *pdev, gfp_t gfp_flags) cnt = be32_to_cpup(p); dprintk("%s stripe count %d\n", __func__, cnt); if (cnt > NFS4_PNFS_MAX_STRIPE_CNT) { - printk(KERN_WARNING "%s: stripe count %d greater than " + printk(KERN_WARNING "NFS: %s: stripe count %d greater than " "supported maximum %d\n", __func__, cnt, NFS4_PNFS_MAX_STRIPE_CNT); goto out_err_free_scratch; @@ -585,7 +585,7 @@ decode_device(struct inode *ino, struct pnfs_device *pdev, gfp_t gfp_flags) num = be32_to_cpup(p); dprintk("%s ds_num %u\n", __func__, num); if (num > NFS4_PNFS_MAX_MULTI_CNT) { - printk(KERN_WARNING "%s: multipath count %d greater than " + printk(KERN_WARNING "NFS: %s: multipath count %d greater than " "supported maximum %d\n", __func__, num, NFS4_PNFS_MAX_MULTI_CNT); goto out_err_free_stripe_indices; @@ -593,7 +593,7 @@ decode_device(struct inode *ino, struct pnfs_device *pdev, gfp_t gfp_flags) /* validate stripe indices are all < num */ if (max_stripe_index >= num) { - printk(KERN_WARNING "%s: stripe index %u >= num ds %u\n", + printk(KERN_WARNING "NFS: %s: stripe index %u >= num ds %u\n", __func__, max_stripe_index, num); goto out_err_free_stripe_indices; } @@ -687,7 +687,7 @@ decode_and_add_device(struct inode *inode, struct pnfs_device *dev, gfp_t gfp_fl new = decode_device(inode, dev, gfp_flags); if (!new) { - printk(KERN_WARNING "%s: Could not decode or add device\n", + printk(KERN_WARNING "NFS: %s: Could not decode or add device\n", __func__); return NULL; } @@ -836,7 +836,7 @@ nfs4_fl_prepare_ds(struct pnfs_layout_segment *lseg, u32 ds_idx) struct nfs4_pnfs_ds *ds = dsaddr->ds_list[ds_idx]; if (ds == NULL) { - printk(KERN_ERR "%s: No data server for offset index %d\n", + printk(KERN_ERR "NFS: %s: No data server for offset index %d\n", __func__, ds_idx); return NULL; } diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 34e525549f8..482ed97189c 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -4584,7 +4584,8 @@ static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock /* Note: we always want to sleep here! */ request->fl_flags = fl_flags | FL_SLEEP; if (do_vfs_lock(request->fl_file, request) < 0) - printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__); + printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " + "manager!\n", __func__); out_unlock: up_read(&nfsi->rwsem); out: @@ -4664,8 +4665,8 @@ int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); switch (err) { default: - printk(KERN_ERR "%s: unhandled error %d.\n", - __func__, err); + printk(KERN_ERR "NFS: %s: unhandled error " + "%d.\n", __func__, err); case 0: case -ESTALE: goto out; diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index b43a65d7fac..4e37818a34e 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -1138,8 +1138,8 @@ static int nfs4_reclaim_locks(struct nfs4_state *state, const struct nfs4_state_ case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: goto out; default: - printk(KERN_ERR "%s: unhandled error %d. Zeroing state\n", - __func__, status); + printk(KERN_ERR "NFS: %s: unhandled error %d. " + "Zeroing state\n", __func__, status); case -ENOMEM: case -NFS4ERR_DENIED: case -NFS4ERR_RECLAIM_BAD: @@ -1185,8 +1185,8 @@ restart: spin_lock(&state->state_lock); list_for_each_entry(lock, &state->lock_states, ls_locks) { if (!(lock->ls_flags & NFS_LOCK_INITIALIZED)) - printk("%s: Lock reclaim failed!\n", - __func__); + printk("NFS: %s: Lock reclaim " + "failed!\n", __func__); } spin_unlock(&state->state_lock); nfs4_put_open_state(state); @@ -1195,8 +1195,8 @@ restart: } switch (status) { default: - printk(KERN_ERR "%s: unhandled error %d. Zeroing state\n", - __func__, status); + printk(KERN_ERR "NFS: %s: unhandled error %d. " + "Zeroing state\n", __func__, status); case -ENOENT: case -ENOMEM: case -ESTALE: diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 2adcc979e5d..ae783436671 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -4468,8 +4468,8 @@ static int decode_first_pnfs_layout_type(struct xdr_stream *xdr, return 0; } if (num > 1) - printk(KERN_INFO "%s: Warning: Multiple pNFS layout drivers " - "per filesystem not supported\n", __func__); + printk(KERN_INFO "NFS: %s: Warning: Multiple pNFS layout " + "drivers per filesystem not supported\n", __func__); /* Decode and set first layout type, move xdr->p past unused types */ p = xdr_inline_decode(xdr, num * 4); @@ -5290,8 +5290,8 @@ static int decode_chan_attrs(struct xdr_stream *xdr, attrs->max_reqs = be32_to_cpup(p++); nr_attrs = be32_to_cpup(p); if (unlikely(nr_attrs > 1)) { - printk(KERN_WARNING "%s: Invalid rdma channel attrs count %u\n", - __func__, nr_attrs); + printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs " + "count %u\n", __func__, nr_attrs); return -EINVAL; } if (nr_attrs == 1) { @@ -5448,7 +5448,7 @@ static int decode_getdevicelist(struct xdr_stream *xdr, dprintk("%s: num_dev %d\n", __func__, res->num_devs); if (res->num_devs > NFS4_PNFS_GETDEVLIST_MAXNUM) { - printk(KERN_ERR "%s too many result dev_num %u\n", + printk(KERN_ERR "NFS: %s too many result dev_num %u\n", __func__, res->num_devs); return -EIO; } diff --git a/fs/nfs/objlayout/objio_osd.c b/fs/nfs/objlayout/objio_osd.c index 55d01280a60..405a62bdb9b 100644 --- a/fs/nfs/objlayout/objio_osd.c +++ b/fs/nfs/objlayout/objio_osd.c @@ -582,10 +582,10 @@ objlayout_init(void) if (ret) printk(KERN_INFO - "%s: Registering OSD pNFS Layout Driver failed: error=%d\n", + "NFS: %s: Registering OSD pNFS Layout Driver failed: error=%d\n", __func__, ret); else - printk(KERN_INFO "%s: Registered OSD pNFS Layout Driver\n", + printk(KERN_INFO "NFS: %s: Registered OSD pNFS Layout Driver\n", __func__); return ret; } @@ -594,7 +594,7 @@ static void __exit objlayout_exit(void) { pnfs_unregister_layoutdriver(&objlayout_type); - printk(KERN_INFO "%s: Unregistered OSD pNFS Layout Driver\n", + printk(KERN_INFO "NFS: %s: Unregistered OSD pNFS Layout Driver\n", __func__); } diff --git a/fs/nfs/objlayout/objlayout.c b/fs/nfs/objlayout/objlayout.c index b3c29039f5b..2bd185277ad 100644 --- a/fs/nfs/objlayout/objlayout.c +++ b/fs/nfs/objlayout/objlayout.c @@ -490,9 +490,9 @@ encode_accumulated_error(struct objlayout *objlay, __be32 *p) if (!ioerr->oer_errno) continue; - printk(KERN_ERR "%s: err[%d]: errno=%d is_write=%d " - "dev(%llx:%llx) par=0x%llx obj=0x%llx " - "offset=0x%llx length=0x%llx\n", + printk(KERN_ERR "NFS: %s: err[%d]: errno=%d " + "is_write=%d dev(%llx:%llx) par=0x%llx " + "obj=0x%llx offset=0x%llx length=0x%llx\n", __func__, i, ioerr->oer_errno, ioerr->oer_iswrite, _DEVID_LO(&ioerr->oer_component.oid_device_id), diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 92927878c2f..a53421604bc 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -101,8 +101,8 @@ set_pnfs_layoutdriver(struct nfs_server *server, const struct nfs_fh *mntfh, goto out_no_driver; if (!(server->nfs_client->cl_exchange_flags & (EXCHGID4_FLAG_USE_NON_PNFS | EXCHGID4_FLAG_USE_PNFS_MDS))) { - printk(KERN_ERR "%s: id %u cl_exchange_flags 0x%x\n", __func__, - id, server->nfs_client->cl_exchange_flags); + printk(KERN_ERR "NFS: %s: id %u cl_exchange_flags 0x%x\n", + __func__, id, server->nfs_client->cl_exchange_flags); goto out_no_driver; } ld_type = find_pnfs_driver(id); @@ -122,8 +122,8 @@ set_pnfs_layoutdriver(struct nfs_server *server, const struct nfs_fh *mntfh, server->pnfs_curr_ld = ld_type; if (ld_type->set_layoutdriver && ld_type->set_layoutdriver(server, mntfh)) { - printk(KERN_ERR "%s: Error initializing pNFS layout driver %u.\n", - __func__, id); + printk(KERN_ERR "NFS: %s: Error initializing pNFS layout " + "driver %u.\n", __func__, id); module_put(ld_type->owner); goto out_no_driver; } @@ -143,11 +143,11 @@ pnfs_register_layoutdriver(struct pnfs_layoutdriver_type *ld_type) struct pnfs_layoutdriver_type *tmp; if (ld_type->id == 0) { - printk(KERN_ERR "%s id 0 is reserved\n", __func__); + printk(KERN_ERR "NFS: %s id 0 is reserved\n", __func__); return status; } if (!ld_type->alloc_lseg || !ld_type->free_lseg) { - printk(KERN_ERR "%s Layout driver must provide " + printk(KERN_ERR "NFS: %s Layout driver must provide " "alloc_lseg and free_lseg.\n", __func__); return status; } @@ -160,7 +160,7 @@ pnfs_register_layoutdriver(struct pnfs_layoutdriver_type *ld_type) dprintk("%s Registering id:%u name:%s\n", __func__, ld_type->id, ld_type->name); } else { - printk(KERN_ERR "%s Module with id %d already loaded!\n", + printk(KERN_ERR "NFS: %s Module with id %d already loaded!\n", __func__, ld_type->id); } spin_unlock(&pnfs_spinlock); -- cgit v1.2.3-70-g09d2 From 45d43c291e9a922d7b432b0dbcb1d8fb70d8410f Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 6 Feb 2012 19:38:51 -0500 Subject: NFSv4.1: Convert slotid from u8 to u32 It is perfectly legal to negotiate up to 2^32-1 slots in the protocol, and with 10GigE, we are already seeing that 255 slots is far too limiting. Signed-off-by: Trond Myklebust --- fs/nfs/callback.h | 2 +- fs/nfs/callback_xdr.c | 6 +++--- fs/nfs/nfs4proc.c | 42 ++++++++++++++++++++---------------------- include/linux/nfs_fs_sb.h | 7 ++++--- include/linux/nfs_xdr.h | 2 +- 5 files changed, 29 insertions(+), 30 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/callback.h b/fs/nfs/callback.h index 197e0d3754c..a5527c90a5a 100644 --- a/fs/nfs/callback.h +++ b/fs/nfs/callback.h @@ -38,7 +38,7 @@ enum nfs4_callback_opnum { struct cb_process_state { __be32 drc_status; struct nfs_client *clp; - int slotid; + u32 slotid; struct net *net; }; diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c index 2e372240d02..5466829c7e7 100644 --- a/fs/nfs/callback_xdr.c +++ b/fs/nfs/callback_xdr.c @@ -759,14 +759,14 @@ static void nfs4_callback_free_slot(struct nfs4_session *session) * Let the state manager know callback processing done. * A single slot, so highest used slotid is either 0 or -1 */ - tbl->highest_used_slotid = -1; + tbl->highest_used_slotid = NFS4_NO_SLOT; nfs4_check_drain_bc_complete(session); spin_unlock(&tbl->slot_tbl_lock); } static void nfs4_cb_free_slot(struct cb_process_state *cps) { - if (cps->slotid != -1) + if (cps->slotid != NFS4_NO_SLOT) nfs4_callback_free_slot(cps->clp->cl_session); } @@ -860,7 +860,7 @@ static __be32 nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *r struct cb_process_state cps = { .drc_status = 0, .clp = NULL, - .slotid = -1, + .slotid = NFS4_NO_SLOT, .net = rqstp->rq_xprt->xpt_net, }; unsigned int nops = 0; diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 482ed97189c..f3f56f4a3b7 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -360,16 +360,14 @@ static void renew_lease(const struct nfs_server *server, unsigned long timestamp * When updating highest_used_slotid there may be "holes" in the bitmap * so we need to scan down from highest_used_slotid to 0 looking for the now * highest slotid in use. - * If none found, highest_used_slotid is set to -1. + * If none found, highest_used_slotid is set to NFS4_NO_SLOT. * * Must be called while holding tbl->slot_tbl_lock */ static void -nfs4_free_slot(struct nfs4_slot_table *tbl, u8 free_slotid) +nfs4_free_slot(struct nfs4_slot_table *tbl, u32 slotid) { - int slotid = free_slotid; - - BUG_ON(slotid < 0 || slotid >= NFS4_MAX_SLOT_TABLE); + BUG_ON(slotid >= NFS4_MAX_SLOT_TABLE); /* clear used bit in bitmap */ __clear_bit(slotid, tbl->used_slots); @@ -379,10 +377,10 @@ nfs4_free_slot(struct nfs4_slot_table *tbl, u8 free_slotid) if (slotid < tbl->max_slots) tbl->highest_used_slotid = slotid; else - tbl->highest_used_slotid = -1; + tbl->highest_used_slotid = NFS4_NO_SLOT; } - dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__, - free_slotid, tbl->highest_used_slotid); + dprintk("%s: slotid %u highest_used_slotid %d\n", __func__, + slotid, tbl->highest_used_slotid); } bool nfs4_set_task_privileged(struct rpc_task *task, void *dummy) @@ -402,7 +400,7 @@ static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) return; } - if (ses->fc_slot_table.highest_used_slotid != -1) + if (ses->fc_slot_table.highest_used_slotid != NFS4_NO_SLOT) return; dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__); @@ -415,7 +413,7 @@ static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) void nfs4_check_drain_bc_complete(struct nfs4_session *ses) { if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) || - ses->bc_slot_table.highest_used_slotid != -1) + ses->bc_slot_table.highest_used_slotid != NFS4_NO_SLOT) return; dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__); complete(&ses->bc_slot_table.complete); @@ -510,25 +508,25 @@ static int nfs4_sequence_done(struct rpc_task *task, * nfs4_find_slot looks for an unset bit in the used_slots bitmap. * If found, we mark the slot as used, update the highest_used_slotid, * and respectively set up the sequence operation args. - * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise. + * The slot number is returned if found, or NFS4_NO_SLOT otherwise. * * Note: must be called with under the slot_tbl_lock. */ -static u8 +static u32 nfs4_find_slot(struct nfs4_slot_table *tbl) { - int slotid; - u8 ret_id = NFS4_MAX_SLOT_TABLE; - BUILD_BUG_ON((u8)NFS4_MAX_SLOT_TABLE != (int)NFS4_MAX_SLOT_TABLE); + u32 slotid; + u32 ret_id = NFS4_NO_SLOT; - dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n", + dprintk("--> %s used_slots=%04lx highest_used=%u max_slots=%u\n", __func__, tbl->used_slots[0], tbl->highest_used_slotid, tbl->max_slots); slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); if (slotid >= tbl->max_slots) goto out; __set_bit(slotid, tbl->used_slots); - if (slotid > tbl->highest_used_slotid) + if (slotid > tbl->highest_used_slotid || + tbl->highest_used_slotid == NFS4_NO_SLOT) tbl->highest_used_slotid = slotid; ret_id = slotid; out: @@ -555,7 +553,7 @@ int nfs41_setup_sequence(struct nfs4_session *session, { struct nfs4_slot *slot; struct nfs4_slot_table *tbl; - u8 slotid; + u32 slotid; dprintk("--> %s\n", __func__); /* slot already allocated? */ @@ -583,7 +581,7 @@ int nfs41_setup_sequence(struct nfs4_session *session, } slotid = nfs4_find_slot(tbl); - if (slotid == NFS4_MAX_SLOT_TABLE) { + if (slotid == NFS4_NO_SLOT) { rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); spin_unlock(&tbl->slot_tbl_lock); dprintk("<-- %s: no free slots\n", __func__); @@ -5144,7 +5142,7 @@ static int nfs4_init_slot_table(struct nfs4_slot_table *tbl, spin_lock(&tbl->slot_tbl_lock); tbl->max_slots = max_slots; tbl->slots = slot; - tbl->highest_used_slotid = -1; /* no slot is currently used */ + tbl->highest_used_slotid = NFS4_NO_SLOT; /* no slot is currently used */ spin_unlock(&tbl->slot_tbl_lock); dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, tbl, tbl->slots, tbl->max_slots); @@ -5196,13 +5194,13 @@ struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) return NULL; tbl = &session->fc_slot_table; - tbl->highest_used_slotid = -1; + tbl->highest_used_slotid = NFS4_NO_SLOT; spin_lock_init(&tbl->slot_tbl_lock); rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); init_completion(&tbl->complete); tbl = &session->bc_slot_table; - tbl->highest_used_slotid = -1; + tbl->highest_used_slotid = NFS4_NO_SLOT; spin_lock_init(&tbl->slot_tbl_lock); rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); init_completion(&tbl->complete); diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 9e101c1b81c..2ae57f2f645 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -191,6 +191,7 @@ struct nfs_server { /* maximum number of slots to use */ #define NFS4_MAX_SLOT_TABLE (128U) +#define NFS4_NO_SLOT ((u32)-1) #if defined(CONFIG_NFS_V4) @@ -201,10 +202,10 @@ struct nfs4_slot_table { unsigned long used_slots[SLOT_TABLE_SZ]; /* used/unused bitmap */ spinlock_t slot_tbl_lock; struct rpc_wait_queue slot_tbl_waitq; /* allocators may wait here */ - int max_slots; /* # slots in table */ - int highest_used_slotid; /* sent to server on each SEQ. + u32 max_slots; /* # slots in table */ + u32 highest_used_slotid; /* sent to server on each SEQ. * op for dynamic resizing */ - int target_max_slots; /* Set by CB_RECALL_SLOT as + u32 target_max_slots; /* Set by CB_RECALL_SLOT as * the new max_slots */ struct completion complete; }; diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 144419a9cbd..adbc84ac345 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -181,7 +181,7 @@ struct nfs4_slot { struct nfs4_sequence_args { struct nfs4_session *sa_session; - u8 sa_slotid; + u32 sa_slotid; u8 sa_cache_this; }; -- cgit v1.2.3-70-g09d2 From ef159e9177cc5a09e6174796dde0b2d243ddf28b Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 6 Feb 2012 19:50:40 -0500 Subject: NFSv4.1: Add a module parameter to set the number of session slots Add the module parameter 'max_session_slots' to set the initial number of slots that the NFSv4.1 client will attempt to negotiate with the server. Signed-off-by: Trond Myklebust --- Documentation/kernel-parameters.txt | 8 ++++++++ fs/nfs/nfs4proc.c | 8 +++++++- include/linux/nfs_fs_sb.h | 5 +++-- 3 files changed, 18 insertions(+), 3 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 033d4e69b43..1d369c6286e 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -1657,6 +1657,14 @@ bytes respectively. Such letter suffixes can also be entirely omitted. of returning the full 64-bit number. The default is to return 64-bit inode numbers. + nfs.max_session_slots= + [NFSv4.1] Sets the maximum number of session slots + the client will attempt to negotiate with the server. + This limits the number of simultaneous RPC requests + that the client can send to the NFSv4.1 server. + Note that there is little point in setting this + value higher than the max_tcp_slot_table_limit. + nfs.nfs4_disable_idmapping= [NFSv4] When set to the default of '1', this option ensures that both the RPC level authentication diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index f3f56f4a3b7..0b331654173 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -72,6 +72,8 @@ #define NFS4_MAX_LOOP_ON_RECOVER (10) +static unsigned short max_session_slots = NFS4_DEF_SLOT_TABLE_SIZE; + struct nfs4_opendata; static int _nfs4_proc_open(struct nfs4_opendata *data); static int _nfs4_recover_proc_open(struct nfs4_opendata *data); @@ -5245,7 +5247,7 @@ static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) args->fc_attrs.max_rqst_sz = mxrqst_sz; args->fc_attrs.max_resp_sz = mxresp_sz; args->fc_attrs.max_ops = NFS4_MAX_OPS; - args->fc_attrs.max_reqs = session->clp->cl_rpcclient->cl_xprt->max_reqs; + args->fc_attrs.max_reqs = max_session_slots; dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " "max_ops=%u max_reqs=%u\n", @@ -6390,6 +6392,10 @@ const struct xattr_handler *nfs4_xattr_handlers[] = { NULL }; +module_param(max_session_slots, ushort, 0644); +MODULE_PARM_DESC(max_session_slots, "Maximum number of outstanding NFSv4.1 " + "requests the client will negotiate"); + /* * Local variables: * c-basic-offset: 8 diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 2ae57f2f645..3bf47666646 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -190,13 +190,14 @@ struct nfs_server { /* maximum number of slots to use */ -#define NFS4_MAX_SLOT_TABLE (128U) +#define NFS4_DEF_SLOT_TABLE_SIZE (16U) +#define NFS4_MAX_SLOT_TABLE (256U) #define NFS4_NO_SLOT ((u32)-1) #if defined(CONFIG_NFS_V4) /* Sessions */ -#define SLOT_TABLE_SZ (NFS4_MAX_SLOT_TABLE/(8*sizeof(long))) +#define SLOT_TABLE_SZ DIV_ROUND_UP(NFS4_MAX_SLOT_TABLE, 8*sizeof(long)) struct nfs4_slot_table { struct nfs4_slot *slots; /* seqid per slot */ unsigned long used_slots[SLOT_TABLE_SZ]; /* used/unused bitmap */ -- cgit v1.2.3-70-g09d2 From b4b9a0c1c89464dabafef974960f509ce33ae1c0 Mon Sep 17 00:00:00 2001 From: Vitaliy Gusev Date: Wed, 15 Feb 2012 19:38:25 +0400 Subject: nfs41: Verify channel's attributes accordingly to RFC v2 ca_maxoperations: For the backchannel, the server MUST NOT change the value the client offers. For the fore channel, the server MAY change the requested value. ca_maxrequests: For the backchannel, the server MUST NOT change the value the client offers. For the fore channel, the server MAY change the requested value. Signed-off-by: Vitaliy Gusev Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 0b331654173..87c584dd88b 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -5287,6 +5287,8 @@ static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args return -EINVAL; if (rcvd->max_reqs == 0) return -EINVAL; + if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) + rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; return 0; } @@ -5302,9 +5304,9 @@ static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) return -EINVAL; /* These would render the backchannel useless: */ - if (rcvd->max_ops == 0) + if (rcvd->max_ops != sent->max_ops) return -EINVAL; - if (rcvd->max_reqs == 0) + if (rcvd->max_reqs != sent->max_reqs) return -EINVAL; return 0; } -- cgit v1.2.3-70-g09d2 From 9edbd953f8aeabf49b89c7c29ff9e31560775b27 Mon Sep 17 00:00:00 2001 From: Weston Andros Adamson Date: Fri, 17 Feb 2012 15:20:25 -0500 Subject: NFSv4: fix server_scope memory leak server_scope would never be freed if nfs4_check_cl_exchange_flags() returned non-zero Signed-off-by: Weston Andros Adamson Cc: stable@vger.kernel.org Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 87c584dd88b..20c3bb06763 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -4945,8 +4945,10 @@ int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) clp->cl_rpcclient->cl_auth->au_flavor); res.server_scope = kzalloc(sizeof(struct server_scope), GFP_KERNEL); - if (unlikely(!res.server_scope)) - return -ENOMEM; + if (unlikely(!res.server_scope)) { + status = -ENOMEM; + goto out; + } status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); if (!status) @@ -4963,12 +4965,13 @@ int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) clp->server_scope = NULL; } - if (!clp->server_scope) + if (!clp->server_scope) { clp->server_scope = res.server_scope; - else - kfree(res.server_scope); + goto out; + } } - + kfree(res.server_scope); +out: dprintk("<-- %s status= %d\n", __func__, status); return status; } -- cgit v1.2.3-70-g09d2 From 7d2ed9ac22bc6bf0d34e8fd291a5295f373b384e Mon Sep 17 00:00:00 2001 From: Weston Andros Adamson Date: Fri, 17 Feb 2012 15:20:26 -0500 Subject: NFSv4: parse and display server implementation ids Shows the implementation ids in /proc/self/mountstats. This doesn't break the nfs-utils mountstats tool. Signed-off-by: Weston Andros Adamson Signed-off-by: Trond Myklebust --- fs/nfs/client.c | 1 + fs/nfs/nfs4proc.c | 21 +++++++++++++++++++++ fs/nfs/nfs4xdr.c | 42 +++++++++++++++++++++++++++++++++++++----- fs/nfs/super.c | 8 ++++++++ include/linux/nfs_fs_sb.h | 2 ++ include/linux/nfs_xdr.h | 15 +++++++-------- 6 files changed, 76 insertions(+), 13 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 592b5583aa3..1506adf4d4e 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -304,6 +304,7 @@ static void nfs_free_client(struct nfs_client *clp) put_net(clp->net); kfree(clp->cl_hostname); kfree(clp->server_scope); + kfree(clp->impl_id); kfree(clp); dprintk("<-- nfs_free_client()\n"); diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 20c3bb06763..90a17cc3ebc 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -4950,10 +4950,23 @@ int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) goto out; } + res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_KERNEL); + if (unlikely(!res.impl_id)) { + status = -ENOMEM; + goto out_server_scope; + } + status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); if (!status) status = nfs4_check_cl_exchange_flags(clp->cl_exchange_flags); + if (!status) { + /* use the most recent implementation id */ + kfree(clp->impl_id); + clp->impl_id = res.impl_id; + } else + kfree(res.impl_id); + if (!status) { if (clp->server_scope && !nfs41_same_server_scope(clp->server_scope, @@ -4970,8 +4983,16 @@ int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) goto out; } } + +out_server_scope: kfree(res.server_scope); out: + if (clp->impl_id) + dprintk("%s: Server Implementation ID: " + "domain: %s, name: %s, date: %llu,%u\n", + __func__, clp->impl_id->domain, clp->impl_id->name, + clp->impl_id->date.seconds, + clp->impl_id->date.nseconds); dprintk("<-- %s status= %d\n", __func__, status); return status; } diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index d824aedb123..b7c04339fdc 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -291,7 +291,11 @@ static int nfs4_stat_to_errno(int); /* eir_server_scope<> */ \ XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \ 1 /* eir_server_impl_id array length */ + \ - 0 /* ignored eir_server_impl_id contents */) + 1 /* nii_domain */ + \ + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ + 1 /* nii_name */ + \ + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ + 3 /* nii_date */) #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */) #define decode_channel_attrs_maxsz (6 + \ 1 /* ca_rdma_ird.len */ + \ @@ -5256,6 +5260,7 @@ static int decode_exchange_id(struct xdr_stream *xdr, char *dummy_str; int status; struct nfs_client *clp = res->client; + uint32_t impl_id_count; status = decode_op_hdr(xdr, OP_EXCHANGE_ID); if (status) @@ -5297,11 +5302,38 @@ static int decode_exchange_id(struct xdr_stream *xdr, memcpy(res->server_scope->server_scope, dummy_str, dummy); res->server_scope->server_scope_sz = dummy; - /* Throw away Implementation id array */ - status = decode_opaque_inline(xdr, &dummy, &dummy_str); - if (unlikely(status)) - return status; + /* Implementation Id */ + p = xdr_inline_decode(xdr, 4); + if (unlikely(!p)) + goto out_overflow; + impl_id_count = be32_to_cpup(p++); + if (impl_id_count) { + /* nii_domain */ + status = decode_opaque_inline(xdr, &dummy, &dummy_str); + if (unlikely(status)) + return status; + if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) + return -EIO; + memcpy(res->impl_id->domain, dummy_str, dummy); + + /* nii_name */ + status = decode_opaque_inline(xdr, &dummy, &dummy_str); + if (unlikely(status)) + return status; + if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) + return -EIO; + memcpy(res->impl_id->name, dummy_str, dummy); + + /* nii_date */ + p = xdr_inline_decode(xdr, 12); + if (unlikely(!p)) + goto out_overflow; + p = xdr_decode_hyper(p, &res->impl_id->date.seconds); + res->impl_id->date.nseconds = be32_to_cpup(p); + + /* if there's more than one entry, ignore the rest */ + } return 0; out_overflow: print_overflow_msg(__func__, xdr); diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 6708f3044eb..8154accd116 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -809,6 +809,14 @@ static int nfs_show_stats(struct seq_file *m, struct dentry *root) seq_printf(m, "\n\tage:\t%lu", (jiffies - nfss->mount_time) / HZ); + if (nfss->nfs_client && nfss->nfs_client->impl_id) { + struct nfs41_impl_id *impl_id = nfss->nfs_client->impl_id; + seq_printf(m, "\n\timpl_id:\tname='%s',domain='%s'," + "date='%llu,%u'", + impl_id->name, impl_id->domain, + impl_id->date.seconds, impl_id->date.nseconds); + } + seq_printf(m, "\n\tcaps:\t"); seq_printf(m, "caps=0x%x", nfss->caps); seq_printf(m, ",wtmult=%u", nfss->wtmult); diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 3bf47666646..03d0b91c2d5 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -18,6 +18,7 @@ struct nfs4_sequence_res; struct nfs_server; struct nfs4_minor_version_ops; struct server_scope; +struct nfs41_impl_id; /* * The nfs_client identifies our client state to the server. @@ -86,6 +87,7 @@ struct nfs_client { #endif struct server_scope *server_scope; /* from exchange_id */ + struct nfs41_impl_id *impl_id; /* from exchange_id */ struct net *net; }; diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index adbc84ac345..046c1bfddc3 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1054,14 +1054,6 @@ struct nfstime4 { }; #ifdef CONFIG_NFS_V4_1 -struct nfs_impl_id4 { - u32 domain_len; - char *domain; - u32 name_len; - char *name; - struct nfstime4 date; -}; - #define NFS4_EXCHANGE_ID_LEN (48) struct nfs41_exchange_id_args { struct nfs_client *client; @@ -1082,10 +1074,17 @@ struct server_scope { char server_scope[NFS4_OPAQUE_LIMIT]; }; +struct nfs41_impl_id { + char domain[NFS4_OPAQUE_LIMIT + 1]; + char name[NFS4_OPAQUE_LIMIT + 1]; + struct nfstime4 date; +}; + struct nfs41_exchange_id_res { struct nfs_client *client; u32 flags; struct server_scope *server_scope; + struct nfs41_impl_id *impl_id; }; struct nfs41_create_session_args { -- cgit v1.2.3-70-g09d2 From a3ca5651cb5eebe2e56e510bbf5cd60abc301c9f Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Thu, 1 Mar 2012 17:00:40 -0500 Subject: NFS: Add debugging messages to NFSv4's CLOSE procedure CLOSE is new with NFSv4. Sometimes it's important to know the timing of this operation compared to things like lease renewal. Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 90a17cc3ebc..6c8e170e2e6 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -1983,6 +1983,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data) struct nfs4_state *state = calldata->state; struct nfs_server *server = NFS_SERVER(calldata->inode); + dprintk("%s: begin!\n", __func__); if (!nfs4_sequence_done(task, &calldata->res.seq_res)) return; /* hmm. we are done with the inode, and in the process of freeing @@ -2010,6 +2011,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data) } nfs_release_seqid(calldata->arg.seqid); nfs_refresh_inode(calldata->inode, calldata->res.fattr); + dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); } static void nfs4_close_prepare(struct rpc_task *task, void *data) @@ -2018,6 +2020,7 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data) struct nfs4_state *state = calldata->state; int call_close = 0; + dprintk("%s: begin!\n", __func__); if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) return; @@ -2042,7 +2045,7 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data) if (!call_close) { /* Note: exit _without_ calling nfs4_close_done */ task->tk_action = NULL; - return; + goto out; } if (calldata->arg.fmode == 0) { @@ -2051,7 +2054,7 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data) pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) { rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq, task, NULL); - return; + goto out; } } @@ -2061,8 +2064,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data) &calldata->arg.seq_args, &calldata->res.seq_res, task)) - return; + goto out; rpc_call_start(task); +out: + dprintk("%s: done!\n", __func__); } static const struct rpc_call_ops nfs4_close_ops = { -- cgit v1.2.3-70-g09d2 From 2446ab6070861aba2dd9229463ffbc40016a9f33 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Thu, 1 Mar 2012 17:00:56 -0500 Subject: SUNRPC: Use RCU to dereference the rpc_clnt.cl_xprt field A migration event will replace the rpc_xprt used by an rpc_clnt. To ensure this can be done safely, all references to cl_xprt must now use a form of rcu_dereference(). Special care is taken with rpc_peeraddr2str(), which returns a pointer to memory whose lifetime is the same as the rpc_xprt. Signed-off-by: Trond Myklebust [ cel: fix lockdep splats and layering violations ] [ cel: forward ported to 3.4 ] [ cel: remove rpc_max_reqs(), add rpc_net_ns() ] Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust --- fs/nfs/callback_proc.c | 9 ++-- fs/nfs/client.c | 16 ++++-- fs/nfs/nfs4namespace.c | 2 +- fs/nfs/nfs4proc.c | 13 +++-- fs/nfs/nfs4state.c | 25 +++++++--- fs/nfs/super.c | 5 ++ include/linux/sunrpc/clnt.h | 4 +- include/linux/sunrpc/debug.h | 13 +++++ net/sunrpc/auth_gss/auth_gss.c | 4 +- net/sunrpc/clnt.c | 110 +++++++++++++++++++++++++++++++++-------- net/sunrpc/rpc_pipe.c | 3 ++ net/sunrpc/rpcb_clnt.c | 15 ++++-- net/sunrpc/stats.c | 6 ++- 13 files changed, 175 insertions(+), 50 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c index 0e0865e3806..1bb29724362 100644 --- a/fs/nfs/callback_proc.c +++ b/fs/nfs/callback_proc.c @@ -8,6 +8,7 @@ #include #include #include +#include #include "nfs4_fs.h" #include "callback.h" #include "delegation.h" @@ -33,7 +34,7 @@ __be32 nfs4_callback_getattr(struct cb_getattrargs *args, res->bitmap[0] = res->bitmap[1] = 0; res->status = htonl(NFS4ERR_BADHANDLE); - dprintk("NFS: GETATTR callback request from %s\n", + dprintk_rcu("NFS: GETATTR callback request from %s\n", rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR)); inode = nfs_delegation_find_inode(cps->clp, &args->fh); @@ -73,7 +74,7 @@ __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy, if (!cps->clp) /* Always set for v4.0. Set in cb_sequence for v4.1 */ goto out; - dprintk("NFS: RECALL callback request from %s\n", + dprintk_rcu("NFS: RECALL callback request from %s\n", rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR)); res = htonl(NFS4ERR_BADHANDLE); @@ -533,7 +534,7 @@ __be32 nfs4_callback_recallany(struct cb_recallanyargs *args, void *dummy, if (!cps->clp) /* set in cb_sequence */ goto out; - dprintk("NFS: RECALL_ANY callback request from %s\n", + dprintk_rcu("NFS: RECALL_ANY callback request from %s\n", rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR)); status = cpu_to_be32(NFS4ERR_INVAL); @@ -568,7 +569,7 @@ __be32 nfs4_callback_recallslot(struct cb_recallslotargs *args, void *dummy, if (!cps->clp) /* set in cb_sequence */ goto out; - dprintk("NFS: CB_RECALL_SLOT request from %s target max slots %d\n", + dprintk_rcu("NFS: CB_RECALL_SLOT request from %s target max slots %d\n", rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR), args->crsa_target_max_slots); diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 1506adf4d4e..d038dc5916e 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -1284,16 +1284,18 @@ static int nfs4_init_callback(struct nfs_client *clp) int error; if (clp->rpc_ops->version == 4) { + struct rpc_xprt *xprt; + + xprt = rcu_dereference_raw(clp->cl_rpcclient->cl_xprt); + if (nfs4_has_session(clp)) { - error = xprt_setup_backchannel( - clp->cl_rpcclient->cl_xprt, + error = xprt_setup_backchannel(xprt, NFS41_BC_MIN_CALLBACKS); if (error < 0) return error; } - error = nfs_callback_up(clp->cl_mvops->minor_version, - clp->cl_rpcclient->cl_xprt); + error = nfs_callback_up(clp->cl_mvops->minor_version, xprt); if (error < 0) { dprintk("%s: failed to start callback. Error = %d\n", __func__, error); @@ -1678,7 +1680,7 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data, data->addrlen, parent_client->cl_ipaddr, data->authflavor, - parent_server->client->cl_xprt->prot, + rpc_protocol(parent_server->client), parent_server->client->cl_timeout, parent_client->cl_mvops->minor_version, parent_client->net); @@ -1905,12 +1907,14 @@ static int nfs_server_list_show(struct seq_file *m, void *v) if (clp->cl_cons_state != NFS_CS_READY) return 0; + rcu_read_lock(); seq_printf(m, "v%u %s %s %3d %s\n", clp->rpc_ops->version, rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_ADDR), rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_PORT), atomic_read(&clp->cl_count), clp->cl_hostname); + rcu_read_unlock(); return 0; } @@ -1993,6 +1997,7 @@ static int nfs_volume_list_show(struct seq_file *m, void *v) (unsigned long long) server->fsid.major, (unsigned long long) server->fsid.minor); + rcu_read_lock(); seq_printf(m, "v%u %s %s %-7s %-17s %s\n", clp->rpc_ops->version, rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_ADDR), @@ -2000,6 +2005,7 @@ static int nfs_volume_list_show(struct seq_file *m, void *v) dev, fsid, nfs_server_fscache_state(server)); + rcu_read_unlock(); return 0; } diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c index 667ea7406fd..9c8eca315f4 100644 --- a/fs/nfs/nfs4namespace.c +++ b/fs/nfs/nfs4namespace.c @@ -96,8 +96,8 @@ static int nfs4_validate_fspath(struct dentry *dentry, static size_t nfs_parse_server_name(char *string, size_t len, struct sockaddr *sa, size_t salen, struct nfs_server *server) { + struct net *net = rpc_net_ns(server->client); ssize_t ret; - struct net *net = server->client->cl_xprt->xprt_net; ret = rpc_pton(net, string, len, sa, salen); if (ret == 0) { diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 6c8e170e2e6..671510cc14c 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -3833,6 +3833,7 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, *p = htonl((u32)clp->cl_boot_time.tv_nsec); for(;;) { + rcu_read_lock(); setclientid.sc_name_len = scnprintf(setclientid.sc_name, sizeof(setclientid.sc_name), "%s/%s %s %s %u", clp->cl_ipaddr, @@ -3849,6 +3850,7 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, sizeof(setclientid.sc_uaddr), "%s.%u.%u", clp->cl_ipaddr, port >> 8, port & 255); + rcu_read_unlock(); status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); if (status != -NFS4ERR_CLID_INUSE) @@ -5244,11 +5246,16 @@ struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) void nfs4_destroy_session(struct nfs4_session *session) { + struct rpc_xprt *xprt; + nfs4_proc_destroy_session(session); + + rcu_read_lock(); + xprt = rcu_dereference(session->clp->cl_rpcclient->cl_xprt); + rcu_read_unlock(); dprintk("%s Destroy backchannel for xprt %p\n", - __func__, session->clp->cl_rpcclient->cl_xprt); - xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt, - NFS41_BC_MIN_CALLBACKS); + __func__, xprt); + xprt_destroy_backchannel(xprt, NFS41_BC_MIN_CALLBACKS); nfs4_destroy_slot_tables(session); kfree(session); } diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index c1111a37dc1..bae959e294c 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -1037,19 +1037,28 @@ static void nfs4_clear_state_manager_bit(struct nfs_client *clp) void nfs4_schedule_state_manager(struct nfs_client *clp) { struct task_struct *task; + char buf[INET6_ADDRSTRLEN + sizeof("-manager") + 1]; if (test_and_set_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) != 0) return; __module_get(THIS_MODULE); atomic_inc(&clp->cl_count); - task = kthread_run(nfs4_run_state_manager, clp, "%s-manager", - rpc_peeraddr2str(clp->cl_rpcclient, - RPC_DISPLAY_ADDR)); - if (!IS_ERR(task)) - return; - nfs4_clear_state_manager_bit(clp); - nfs_put_client(clp); - module_put(THIS_MODULE); + + /* The rcu_read_lock() is not strictly necessary, as the state + * manager is the only thread that ever changes the rpc_xprt + * after it's initialized. At this point, we're single threaded. */ + rcu_read_lock(); + snprintf(buf, sizeof(buf), "%s-manager", + rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR)); + rcu_read_unlock(); + task = kthread_run(nfs4_run_state_manager, clp, buf); + if (IS_ERR(task)) { + printk(KERN_ERR "%s: kthread_run: %ld\n", + __func__, PTR_ERR(task)); + nfs4_clear_state_manager_bit(clp); + nfs_put_client(clp); + module_put(THIS_MODULE); + } } /* diff --git a/fs/nfs/super.c b/fs/nfs/super.c index f4ccdae6a0c..7002be11d99 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -53,6 +53,7 @@ #include #include #include +#include #include #include @@ -701,8 +702,10 @@ static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss, else seq_puts(m, nfs_infop->nostr); } + rcu_read_lock(); seq_printf(m, ",proto=%s", rpc_peeraddr2str(nfss->client, RPC_DISPLAY_NETID)); + rcu_read_unlock(); if (version == 4) { if (nfss->port != NFS_PORT) seq_printf(m, ",port=%u", nfss->port); @@ -751,9 +754,11 @@ static int nfs_show_options(struct seq_file *m, struct dentry *root) nfs_show_mount_options(m, nfss, 0); + rcu_read_lock(); seq_printf(m, ",addr=%s", rpc_peeraddr2str(nfss->nfs_client->cl_rpcclient, RPC_DISPLAY_ADDR)); + rcu_read_unlock(); return 0; } diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h index a4c62e95c72..e3d12b4a031 100644 --- a/include/linux/sunrpc/clnt.h +++ b/include/linux/sunrpc/clnt.h @@ -35,7 +35,7 @@ struct rpc_clnt { struct list_head cl_clients; /* Global list of clients */ struct list_head cl_tasks; /* List of tasks */ spinlock_t cl_lock; /* spinlock */ - struct rpc_xprt * cl_xprt; /* transport */ + struct rpc_xprt __rcu * cl_xprt; /* transport */ struct rpc_procinfo * cl_procinfo; /* procedure info */ u32 cl_prog, /* RPC program number */ cl_vers, /* RPC version number */ @@ -156,6 +156,8 @@ struct rpc_task *rpc_call_null(struct rpc_clnt *clnt, struct rpc_cred *cred, int rpc_restart_call_prepare(struct rpc_task *); int rpc_restart_call(struct rpc_task *); void rpc_setbufsize(struct rpc_clnt *, unsigned int, unsigned int); +int rpc_protocol(struct rpc_clnt *); +struct net * rpc_net_ns(struct rpc_clnt *); size_t rpc_max_payload(struct rpc_clnt *); void rpc_force_rebind(struct rpc_clnt *); size_t rpc_peeraddr(struct rpc_clnt *, struct sockaddr *, size_t); diff --git a/include/linux/sunrpc/debug.h b/include/linux/sunrpc/debug.h index b506936f4ce..6cb2517bcf7 100644 --- a/include/linux/sunrpc/debug.h +++ b/include/linux/sunrpc/debug.h @@ -50,19 +50,32 @@ extern unsigned int nlm_debug; #endif #define dprintk(args...) dfprintk(FACILITY, ## args) +#define dprintk_rcu(args...) dfprintk_rcu(FACILITY, ## args) #undef ifdebug #ifdef RPC_DEBUG # define ifdebug(fac) if (unlikely(rpc_debug & RPCDBG_##fac)) + # define dfprintk(fac, args...) \ do { \ ifdebug(fac) \ printk(KERN_DEFAULT args); \ } while (0) + +# define dfprintk_rcu(fac, args...) \ + do { \ + ifdebug(fac) { \ + rcu_read_lock(); \ + printk(KERN_DEFAULT args); \ + rcu_read_unlock(); \ + } \ + } while (0) + # define RPC_IFDEBUG(x) x #else # define ifdebug(fac) if (0) # define dfprintk(fac, args...) do ; while (0) +# define dfprintk_rcu(fac, args...) do ; while (0) # define RPC_IFDEBUG(x) #endif diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c index cb2e5645274..d3ad81f8da5 100644 --- a/net/sunrpc/auth_gss/auth_gss.c +++ b/net/sunrpc/auth_gss/auth_gss.c @@ -799,7 +799,7 @@ err_unlink_pipe_1: static void gss_pipes_dentries_destroy_net(struct rpc_clnt *clnt, struct rpc_auth *auth) { - struct net *net = clnt->cl_xprt->xprt_net; + struct net *net = rpc_net_ns(clnt); struct super_block *sb; sb = rpc_get_sb_net(net); @@ -813,7 +813,7 @@ static void gss_pipes_dentries_destroy_net(struct rpc_clnt *clnt, static int gss_pipes_dentries_create_net(struct rpc_clnt *clnt, struct rpc_auth *auth) { - struct net *net = clnt->cl_xprt->xprt_net; + struct net *net = rpc_net_ns(clnt); struct super_block *sb; int err = 0; diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index 25c3da53fb6..7783fc0e726 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -31,6 +31,7 @@ #include #include #include +#include #include #include @@ -81,7 +82,8 @@ static int rpc_ping(struct rpc_clnt *clnt); static void rpc_register_client(struct rpc_clnt *clnt) { - struct sunrpc_net *sn = net_generic(clnt->cl_xprt->xprt_net, sunrpc_net_id); + struct net *net = rpc_net_ns(clnt); + struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); spin_lock(&sn->rpc_client_lock); list_add(&clnt->cl_clients, &sn->all_clients); @@ -90,7 +92,8 @@ static void rpc_register_client(struct rpc_clnt *clnt) static void rpc_unregister_client(struct rpc_clnt *clnt) { - struct sunrpc_net *sn = net_generic(clnt->cl_xprt->xprt_net, sunrpc_net_id); + struct net *net = rpc_net_ns(clnt); + struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); spin_lock(&sn->rpc_client_lock); list_del(&clnt->cl_clients); @@ -109,12 +112,13 @@ static void __rpc_clnt_remove_pipedir(struct rpc_clnt *clnt) static void rpc_clnt_remove_pipedir(struct rpc_clnt *clnt) { + struct net *net = rpc_net_ns(clnt); struct super_block *pipefs_sb; - pipefs_sb = rpc_get_sb_net(clnt->cl_xprt->xprt_net); + pipefs_sb = rpc_get_sb_net(net); if (pipefs_sb) { __rpc_clnt_remove_pipedir(clnt); - rpc_put_sb_net(clnt->cl_xprt->xprt_net); + rpc_put_sb_net(net); } } @@ -155,17 +159,18 @@ static struct dentry *rpc_setup_pipedir_sb(struct super_block *sb, static int rpc_setup_pipedir(struct rpc_clnt *clnt, const char *dir_name) { + struct net *net = rpc_net_ns(clnt); struct super_block *pipefs_sb; struct dentry *dentry; clnt->cl_dentry = NULL; if (dir_name == NULL) return 0; - pipefs_sb = rpc_get_sb_net(clnt->cl_xprt->xprt_net); + pipefs_sb = rpc_get_sb_net(net); if (!pipefs_sb) return 0; dentry = rpc_setup_pipedir_sb(pipefs_sb, clnt, dir_name); - rpc_put_sb_net(clnt->cl_xprt->xprt_net); + rpc_put_sb_net(net); if (IS_ERR(dentry)) return PTR_ERR(dentry); clnt->cl_dentry = dentry; @@ -295,7 +300,7 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, stru if (clnt->cl_server == NULL) goto out_no_server; - clnt->cl_xprt = xprt; + rcu_assign_pointer(clnt->cl_xprt, xprt); clnt->cl_procinfo = version->procs; clnt->cl_maxproc = version->nrprocs; clnt->cl_protname = program->name; @@ -310,7 +315,7 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, stru INIT_LIST_HEAD(&clnt->cl_tasks); spin_lock_init(&clnt->cl_lock); - if (!xprt_bound(clnt->cl_xprt)) + if (!xprt_bound(xprt)) clnt->cl_autobind = 1; clnt->cl_timeout = xprt->timeout; @@ -477,6 +482,7 @@ struct rpc_clnt * rpc_clone_client(struct rpc_clnt *clnt) { struct rpc_clnt *new; + struct rpc_xprt *xprt; int err = -ENOMEM; new = kmemdup(clnt, sizeof(*new), GFP_KERNEL); @@ -499,18 +505,25 @@ rpc_clone_client(struct rpc_clnt *clnt) if (new->cl_principal == NULL) goto out_no_principal; } + rcu_read_lock(); + xprt = xprt_get(rcu_dereference(clnt->cl_xprt)); + rcu_read_unlock(); + if (xprt == NULL) + goto out_no_transport; + rcu_assign_pointer(new->cl_xprt, xprt); atomic_set(&new->cl_count, 1); err = rpc_setup_pipedir(new, clnt->cl_program->pipe_dir_name); if (err != 0) goto out_no_path; if (new->cl_auth) atomic_inc(&new->cl_auth->au_count); - xprt_get(clnt->cl_xprt); atomic_inc(&clnt->cl_count); rpc_register_client(new); rpciod_up(); return new; out_no_path: + xprt_put(xprt); +out_no_transport: kfree(new->cl_principal); out_no_principal: rpc_free_iostats(new->cl_metrics); @@ -590,7 +603,7 @@ rpc_free_client(struct rpc_clnt *clnt) rpc_free_iostats(clnt->cl_metrics); kfree(clnt->cl_principal); clnt->cl_metrics = NULL; - xprt_put(clnt->cl_xprt); + xprt_put(rcu_dereference_raw(clnt->cl_xprt)); rpciod_down(); kfree(clnt); } @@ -879,13 +892,18 @@ EXPORT_SYMBOL_GPL(rpc_call_start); size_t rpc_peeraddr(struct rpc_clnt *clnt, struct sockaddr *buf, size_t bufsize) { size_t bytes; - struct rpc_xprt *xprt = clnt->cl_xprt; + struct rpc_xprt *xprt; + + rcu_read_lock(); + xprt = rcu_dereference(clnt->cl_xprt); - bytes = sizeof(xprt->addr); + bytes = xprt->addrlen; if (bytes > bufsize) bytes = bufsize; - memcpy(buf, &clnt->cl_xprt->addr, bytes); - return xprt->addrlen; + memcpy(buf, &xprt->addr, bytes); + rcu_read_unlock(); + + return bytes; } EXPORT_SYMBOL_GPL(rpc_peeraddr); @@ -894,11 +912,16 @@ EXPORT_SYMBOL_GPL(rpc_peeraddr); * @clnt: RPC client structure * @format: address format * + * NB: the lifetime of the memory referenced by the returned pointer is + * the same as the rpc_xprt itself. As long as the caller uses this + * pointer, it must hold the RCU read lock. */ const char *rpc_peeraddr2str(struct rpc_clnt *clnt, enum rpc_display_format_t format) { - struct rpc_xprt *xprt = clnt->cl_xprt; + struct rpc_xprt *xprt; + + xprt = rcu_dereference(clnt->cl_xprt); if (xprt->address_strings[format] != NULL) return xprt->address_strings[format]; @@ -910,14 +933,51 @@ EXPORT_SYMBOL_GPL(rpc_peeraddr2str); void rpc_setbufsize(struct rpc_clnt *clnt, unsigned int sndsize, unsigned int rcvsize) { - struct rpc_xprt *xprt = clnt->cl_xprt; + struct rpc_xprt *xprt; + + rcu_read_lock(); + xprt = rcu_dereference(clnt->cl_xprt); if (xprt->ops->set_buffer_size) xprt->ops->set_buffer_size(xprt, sndsize, rcvsize); + rcu_read_unlock(); } EXPORT_SYMBOL_GPL(rpc_setbufsize); -/* - * Return size of largest payload RPC client can support, in bytes +/** + * rpc_protocol - Get transport protocol number for an RPC client + * @clnt: RPC client to query + * + */ +int rpc_protocol(struct rpc_clnt *clnt) +{ + int protocol; + + rcu_read_lock(); + protocol = rcu_dereference(clnt->cl_xprt)->prot; + rcu_read_unlock(); + return protocol; +} +EXPORT_SYMBOL_GPL(rpc_protocol); + +/** + * rpc_net_ns - Get the network namespace for this RPC client + * @clnt: RPC client to query + * + */ +struct net *rpc_net_ns(struct rpc_clnt *clnt) +{ + struct net *ret; + + rcu_read_lock(); + ret = rcu_dereference(clnt->cl_xprt)->xprt_net; + rcu_read_unlock(); + return ret; +} +EXPORT_SYMBOL_GPL(rpc_net_ns); + +/** + * rpc_max_payload - Get maximum payload size for a transport, in bytes + * @clnt: RPC client to query * * For stream transports, this is one RPC record fragment (see RFC * 1831), as we don't support multi-record requests yet. For datagram @@ -926,7 +986,12 @@ EXPORT_SYMBOL_GPL(rpc_setbufsize); */ size_t rpc_max_payload(struct rpc_clnt *clnt) { - return clnt->cl_xprt->max_payload; + size_t ret; + + rcu_read_lock(); + ret = rcu_dereference(clnt->cl_xprt)->max_payload; + rcu_read_unlock(); + return ret; } EXPORT_SYMBOL_GPL(rpc_max_payload); @@ -937,8 +1002,11 @@ EXPORT_SYMBOL_GPL(rpc_max_payload); */ void rpc_force_rebind(struct rpc_clnt *clnt) { - if (clnt->cl_autobind) - xprt_clear_bound(clnt->cl_xprt); + if (clnt->cl_autobind) { + rcu_read_lock(); + xprt_clear_bound(rcu_dereference(clnt->cl_xprt)); + rcu_read_unlock(); + } } EXPORT_SYMBOL_GPL(rpc_force_rebind); diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c index ac9ee159073..3d30943ed6d 100644 --- a/net/sunrpc/rpc_pipe.c +++ b/net/sunrpc/rpc_pipe.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include @@ -402,12 +403,14 @@ rpc_show_info(struct seq_file *m, void *v) { struct rpc_clnt *clnt = m->private; + rcu_read_lock(); seq_printf(m, "RPC server: %s\n", clnt->cl_server); seq_printf(m, "service: %s (%d) version %d\n", clnt->cl_protname, clnt->cl_prog, clnt->cl_vers); seq_printf(m, "address: %s\n", rpc_peeraddr2str(clnt, RPC_DISPLAY_ADDR)); seq_printf(m, "protocol: %s\n", rpc_peeraddr2str(clnt, RPC_DISPLAY_PROTO)); seq_printf(m, "port: %s\n", rpc_peeraddr2str(clnt, RPC_DISPLAY_PORT)); + rcu_read_unlock(); return 0; } diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c index b1f08bd6788..4f8af63798a 100644 --- a/net/sunrpc/rpcb_clnt.c +++ b/net/sunrpc/rpcb_clnt.c @@ -620,9 +620,10 @@ static struct rpc_task *rpcb_call_async(struct rpc_clnt *rpcb_clnt, struct rpcbi static struct rpc_clnt *rpcb_find_transport_owner(struct rpc_clnt *clnt) { struct rpc_clnt *parent = clnt->cl_parent; + struct rpc_xprt *xprt = rcu_dereference(clnt->cl_xprt); while (parent != clnt) { - if (parent->cl_xprt != clnt->cl_xprt) + if (rcu_dereference(parent->cl_xprt) != xprt) break; if (clnt->cl_autobind) break; @@ -653,8 +654,12 @@ void rpcb_getport_async(struct rpc_task *task) size_t salen; int status; - clnt = rpcb_find_transport_owner(task->tk_client); - xprt = clnt->cl_xprt; + rcu_read_lock(); + do { + clnt = rpcb_find_transport_owner(task->tk_client); + xprt = xprt_get(rcu_dereference(clnt->cl_xprt)); + } while (xprt == NULL); + rcu_read_unlock(); dprintk("RPC: %5u %s(%s, %u, %u, %d)\n", task->tk_pid, __func__, @@ -667,6 +672,7 @@ void rpcb_getport_async(struct rpc_task *task) if (xprt_test_and_set_binding(xprt)) { dprintk("RPC: %5u %s: waiting for another binder\n", task->tk_pid, __func__); + xprt_put(xprt); return; } @@ -734,7 +740,7 @@ void rpcb_getport_async(struct rpc_task *task) switch (bind_version) { case RPCBVERS_4: case RPCBVERS_3: - map->r_netid = rpc_peeraddr2str(clnt, RPC_DISPLAY_NETID); + map->r_netid = xprt->address_strings[RPC_DISPLAY_NETID]; map->r_addr = rpc_sockaddr2uaddr(sap, GFP_ATOMIC); map->r_owner = ""; break; @@ -763,6 +769,7 @@ bailout_release_client: bailout_nofree: rpcb_wake_rpcbind_waiters(xprt, status); task->tk_status = status; + xprt_put(xprt); } EXPORT_SYMBOL_GPL(rpcb_getport_async); diff --git a/net/sunrpc/stats.c b/net/sunrpc/stats.c index 1eb3304bc10..bc2068ee795 100644 --- a/net/sunrpc/stats.c +++ b/net/sunrpc/stats.c @@ -22,6 +22,7 @@ #include #include #include +#include #include "netns.h" @@ -179,7 +180,7 @@ static void _print_name(struct seq_file *seq, unsigned int op, void rpc_print_iostats(struct seq_file *seq, struct rpc_clnt *clnt) { struct rpc_iostats *stats = clnt->cl_metrics; - struct rpc_xprt *xprt = clnt->cl_xprt; + struct rpc_xprt *xprt; unsigned int op, maxproc = clnt->cl_maxproc; if (!stats) @@ -189,8 +190,11 @@ void rpc_print_iostats(struct seq_file *seq, struct rpc_clnt *clnt) seq_printf(seq, "p/v: %u/%u (%s)\n", clnt->cl_prog, clnt->cl_vers, clnt->cl_protname); + rcu_read_lock(); + xprt = rcu_dereference(clnt->cl_xprt); if (xprt) xprt->ops->print_stats(xprt, seq); + rcu_read_unlock(); seq_printf(seq, "\tper-op statistics\n"); for (op = 0; op < maxproc; op++) { -- cgit v1.2.3-70-g09d2 From 4e0038b6b246e4145fc4a53dca61a556d17bc52c Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Thu, 1 Mar 2012 17:01:05 -0500 Subject: SUNRPC: Move clnt->cl_server into struct rpc_xprt When the cl_xprt field is updated, the cl_server field will also have to change. Since the contents of cl_server follow the remote endpoint of cl_xprt, just move that field to the rpc_xprt. Signed-off-by: Trond Myklebust [ cel: simplify check_gss_callback_principal(), whitespace changes ] [ cel: forward ported to 3.4 ] Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust --- fs/nfs/callback.c | 3 +- fs/nfs/nfs4proc.c | 3 +- include/linux/sunrpc/clnt.h | 1 - include/linux/sunrpc/xprt.h | 2 ++ net/sunrpc/clnt.c | 88 ++++++++++++++++++++++----------------------- net/sunrpc/rpc_pipe.c | 3 +- net/sunrpc/rpcb_clnt.c | 4 +-- net/sunrpc/xprt.c | 15 +++++++- 8 files changed, 66 insertions(+), 53 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c index 4a122ae7176..2afe23349c7 100644 --- a/fs/nfs/callback.c +++ b/fs/nfs/callback.c @@ -332,7 +332,6 @@ void nfs_callback_down(int minorversion) int check_gss_callback_principal(struct nfs_client *clp, struct svc_rqst *rqstp) { - struct rpc_clnt *r = clp->cl_rpcclient; char *p = svc_gss_principal(rqstp); if (rqstp->rq_authop->flavour != RPC_AUTH_GSS) @@ -353,7 +352,7 @@ check_gss_callback_principal(struct nfs_client *clp, struct svc_rqst *rqstp) if (memcmp(p, "nfs@", 4) != 0) return 0; p += 4; - if (strcmp(p, r->cl_server) != 0) + if (strcmp(p, clp->cl_hostname) != 0) return 0; return 1; } diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 671510cc14c..54767dd66cf 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -1100,6 +1100,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data if (state == NULL) goto err_put_inode; if (data->o_res.delegation_type != 0) { + struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; int delegation_flags = 0; rcu_read_lock(); @@ -1111,7 +1112,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data pr_err_ratelimited("NFS: Broken NFSv4 server %s is " "returning a delegation for " "OPEN(CLAIM_DELEGATE_CUR)\n", - NFS_CLIENT(inode)->cl_server); + clp->cl_hostname); } else if ((delegation_flags & 1UL<inode, data->owner->so_cred, diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h index e3d12b4a031..acd5502a819 100644 --- a/include/linux/sunrpc/clnt.h +++ b/include/linux/sunrpc/clnt.h @@ -41,7 +41,6 @@ struct rpc_clnt { cl_vers, /* RPC version number */ cl_maxproc; /* max procedure number */ - const char * cl_server; /* server machine name */ const char * cl_protname; /* protocol name */ struct rpc_auth * cl_auth; /* authenticator */ struct rpc_stat * cl_stats; /* per-program statistics */ diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h index ea712f97f4a..77d278defa7 100644 --- a/include/linux/sunrpc/xprt.h +++ b/include/linux/sunrpc/xprt.h @@ -229,6 +229,7 @@ struct rpc_xprt { } stat; struct net *xprt_net; + const char *servername; const char *address_strings[RPC_DISPLAY_MAX]; }; @@ -258,6 +259,7 @@ struct xprt_create { struct sockaddr * srcaddr; /* optional local address */ struct sockaddr * dstaddr; /* remote peer address */ size_t addrlen; + const char *servername; struct svc_xprt *bc_xprt; /* NFSv4.1 backchannel */ }; diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index 7783fc0e726..e39ace9a4e1 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -265,15 +265,8 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, stru struct rpc_clnt *clnt = NULL; struct rpc_auth *auth; int err; - size_t len; /* sanity check the name before trying to print it */ - err = -EINVAL; - len = strlen(args->servername); - if (len > RPC_MAXNETNAMELEN) - goto out_no_rpciod; - len++; - dprintk("RPC: creating %s client for %s (xprt %p)\n", program->name, args->servername, xprt); @@ -296,10 +289,6 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, stru goto out_err; clnt->cl_parent = clnt; - clnt->cl_server = kstrdup(args->servername, GFP_KERNEL); - if (clnt->cl_server == NULL) - goto out_no_server; - rcu_assign_pointer(clnt->cl_xprt, xprt); clnt->cl_procinfo = version->procs; clnt->cl_maxproc = version->nrprocs; @@ -363,8 +352,6 @@ out_no_path: out_no_principal: rpc_free_iostats(clnt->cl_metrics); out_no_stats: - kfree(clnt->cl_server); -out_no_server: kfree(clnt); out_err: xprt_put(xprt); @@ -394,6 +381,7 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args) .srcaddr = args->saddress, .dstaddr = args->address, .addrlen = args->addrsize, + .servername = args->servername, .bc_xprt = args->bc_xprt, }; char servername[48]; @@ -402,7 +390,7 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args) * If the caller chooses not to specify a hostname, whip * up a string representation of the passed-in address. */ - if (args->servername == NULL) { + if (xprtargs.servername == NULL) { struct sockaddr_un *sun = (struct sockaddr_un *)args->address; struct sockaddr_in *sin = @@ -429,7 +417,7 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args) * address family isn't recognized. */ return ERR_PTR(-EINVAL); } - args->servername = servername; + xprtargs.servername = servername; } xprt = xprt_create_transport(&xprtargs); @@ -488,9 +476,6 @@ rpc_clone_client(struct rpc_clnt *clnt) new = kmemdup(clnt, sizeof(*new), GFP_KERNEL); if (!new) goto out_no_clnt; - new->cl_server = kstrdup(clnt->cl_server, GFP_KERNEL); - if (new->cl_server == NULL) - goto out_no_server; new->cl_parent = clnt; /* Turn off autobind on clones */ new->cl_autobind = 0; @@ -528,8 +513,6 @@ out_no_transport: out_no_principal: rpc_free_iostats(new->cl_metrics); out_no_stats: - kfree(new->cl_server); -out_no_server: kfree(new); out_no_clnt: dprintk("RPC: %s: returned error %d\n", __func__, err); @@ -574,8 +557,9 @@ EXPORT_SYMBOL_GPL(rpc_killall_tasks); */ void rpc_shutdown_client(struct rpc_clnt *clnt) { - dprintk("RPC: shutting down %s client for %s\n", - clnt->cl_protname, clnt->cl_server); + dprintk_rcu("RPC: shutting down %s client for %s\n", + clnt->cl_protname, + rcu_dereference(clnt->cl_xprt)->servername); while (!list_empty(&clnt->cl_tasks)) { rpc_killall_tasks(clnt); @@ -593,11 +577,11 @@ EXPORT_SYMBOL_GPL(rpc_shutdown_client); static void rpc_free_client(struct rpc_clnt *clnt) { - dprintk("RPC: destroying %s client for %s\n", - clnt->cl_protname, clnt->cl_server); + dprintk_rcu("RPC: destroying %s client for %s\n", + clnt->cl_protname, + rcu_dereference(clnt->cl_xprt)->servername); if (clnt->cl_parent != clnt) rpc_release_client(clnt->cl_parent); - kfree(clnt->cl_server); rpc_unregister_client(clnt); rpc_clnt_remove_pipedir(clnt); rpc_free_iostats(clnt->cl_metrics); @@ -1685,8 +1669,11 @@ call_timeout(struct rpc_task *task) } if (RPC_IS_SOFT(task)) { if (clnt->cl_chatty) + rcu_read_lock(); printk(KERN_NOTICE "%s: server %s not responding, timed out\n", - clnt->cl_protname, clnt->cl_server); + clnt->cl_protname, + rcu_dereference(clnt->cl_xprt)->servername); + rcu_read_unlock(); if (task->tk_flags & RPC_TASK_TIMEOUT) rpc_exit(task, -ETIMEDOUT); else @@ -1696,9 +1683,13 @@ call_timeout(struct rpc_task *task) if (!(task->tk_flags & RPC_CALL_MAJORSEEN)) { task->tk_flags |= RPC_CALL_MAJORSEEN; - if (clnt->cl_chatty) + if (clnt->cl_chatty) { + rcu_read_lock(); printk(KERN_NOTICE "%s: server %s not responding, still trying\n", - clnt->cl_protname, clnt->cl_server); + clnt->cl_protname, + rcu_dereference(clnt->cl_xprt)->servername); + rcu_read_unlock(); + } } rpc_force_rebind(clnt); /* @@ -1727,9 +1718,13 @@ call_decode(struct rpc_task *task) dprint_status(task); if (task->tk_flags & RPC_CALL_MAJORSEEN) { - if (clnt->cl_chatty) + if (clnt->cl_chatty) { + rcu_read_lock(); printk(KERN_NOTICE "%s: server %s OK\n", - clnt->cl_protname, clnt->cl_server); + clnt->cl_protname, + rcu_dereference(clnt->cl_xprt)->servername); + rcu_read_unlock(); + } task->tk_flags &= ~RPC_CALL_MAJORSEEN; } @@ -1807,6 +1802,7 @@ rpc_encode_header(struct rpc_task *task) static __be32 * rpc_verify_header(struct rpc_task *task) { + struct rpc_clnt *clnt = task->tk_client; struct kvec *iov = &task->tk_rqstp->rq_rcv_buf.head[0]; int len = task->tk_rqstp->rq_rcv_buf.len >> 2; __be32 *p = iov->iov_base; @@ -1879,8 +1875,11 @@ rpc_verify_header(struct rpc_task *task) task->tk_action = call_bind; goto out_retry; case RPC_AUTH_TOOWEAK: + rcu_read_lock(); printk(KERN_NOTICE "RPC: server %s requires stronger " - "authentication.\n", task->tk_client->cl_server); + "authentication.\n", + rcu_dereference(clnt->cl_xprt)->servername); + rcu_read_unlock(); break; default: dprintk("RPC: %5u %s: unknown auth error: %x\n", @@ -1903,28 +1902,27 @@ rpc_verify_header(struct rpc_task *task) case RPC_SUCCESS: return p; case RPC_PROG_UNAVAIL: - dprintk("RPC: %5u %s: program %u is unsupported by server %s\n", - task->tk_pid, __func__, - (unsigned int)task->tk_client->cl_prog, - task->tk_client->cl_server); + dprintk_rcu("RPC: %5u %s: program %u is unsupported " + "by server %s\n", task->tk_pid, __func__, + (unsigned int)clnt->cl_prog, + rcu_dereference(clnt->cl_xprt)->servername); error = -EPFNOSUPPORT; goto out_err; case RPC_PROG_MISMATCH: - dprintk("RPC: %5u %s: program %u, version %u unsupported by " - "server %s\n", task->tk_pid, __func__, - (unsigned int)task->tk_client->cl_prog, - (unsigned int)task->tk_client->cl_vers, - task->tk_client->cl_server); + dprintk_rcu("RPC: %5u %s: program %u, version %u unsupported " + "by server %s\n", task->tk_pid, __func__, + (unsigned int)clnt->cl_prog, + (unsigned int)clnt->cl_vers, + rcu_dereference(clnt->cl_xprt)->servername); error = -EPROTONOSUPPORT; goto out_err; case RPC_PROC_UNAVAIL: - dprintk("RPC: %5u %s: proc %s unsupported by program %u, " + dprintk_rcu("RPC: %5u %s: proc %s unsupported by program %u, " "version %u on server %s\n", task->tk_pid, __func__, rpc_proc_name(task), - task->tk_client->cl_prog, - task->tk_client->cl_vers, - task->tk_client->cl_server); + clnt->cl_prog, clnt->cl_vers, + rcu_dereference(clnt->cl_xprt)->servername); error = -EOPNOTSUPP; goto out_err; case RPC_GARBAGE_ARGS: @@ -1938,7 +1936,7 @@ rpc_verify_header(struct rpc_task *task) } out_garbage: - task->tk_client->cl_stats->rpcgarbage++; + clnt->cl_stats->rpcgarbage++; if (task->tk_garb_retry) { task->tk_garb_retry--; dprintk("RPC: %5u %s: retrying\n", diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c index 3d30943ed6d..7d96e3cd57c 100644 --- a/net/sunrpc/rpc_pipe.c +++ b/net/sunrpc/rpc_pipe.c @@ -404,7 +404,8 @@ rpc_show_info(struct seq_file *m, void *v) struct rpc_clnt *clnt = m->private; rcu_read_lock(); - seq_printf(m, "RPC server: %s\n", clnt->cl_server); + seq_printf(m, "RPC server: %s\n", + rcu_dereference(clnt->cl_xprt)->servername); seq_printf(m, "service: %s (%d) version %d\n", clnt->cl_protname, clnt->cl_prog, clnt->cl_vers); seq_printf(m, "address: %s\n", rpc_peeraddr2str(clnt, RPC_DISPLAY_ADDR)); diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c index 4f8af63798a..e699ff0ce90 100644 --- a/net/sunrpc/rpcb_clnt.c +++ b/net/sunrpc/rpcb_clnt.c @@ -663,7 +663,7 @@ void rpcb_getport_async(struct rpc_task *task) dprintk("RPC: %5u %s(%s, %u, %u, %d)\n", task->tk_pid, __func__, - clnt->cl_server, clnt->cl_prog, clnt->cl_vers, xprt->prot); + xprt->servername, clnt->cl_prog, clnt->cl_vers, xprt->prot); /* Put self on the wait queue to ensure we get notified if * some other task is already attempting to bind the port */ @@ -714,7 +714,7 @@ void rpcb_getport_async(struct rpc_task *task) dprintk("RPC: %5u %s: trying rpcbind version %u\n", task->tk_pid, __func__, bind_version); - rpcb_clnt = rpcb_create(xprt->xprt_net, clnt->cl_server, sap, salen, + rpcb_clnt = rpcb_create(xprt->xprt_net, xprt->servername, sap, salen, xprt->prot, bind_version); if (IS_ERR(rpcb_clnt)) { status = PTR_ERR(rpcb_clnt); diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c index 32e37945a84..0cbcd1ab49a 100644 --- a/net/sunrpc/xprt.c +++ b/net/sunrpc/xprt.c @@ -66,6 +66,7 @@ static void xprt_init(struct rpc_xprt *xprt, struct net *net); static void xprt_request_init(struct rpc_task *, struct rpc_xprt *); static void xprt_connect_status(struct rpc_task *task); static int __xprt_get_cong(struct rpc_xprt *, struct rpc_task *); +static void xprt_destroy(struct rpc_xprt *xprt); static DEFINE_SPINLOCK(xprt_list_lock); static LIST_HEAD(xprt_list); @@ -751,7 +752,7 @@ static void xprt_connect_status(struct rpc_task *task) default: dprintk("RPC: %5u xprt_connect_status: error %d connecting to " "server %s\n", task->tk_pid, -task->tk_status, - task->tk_client->cl_server); + xprt->servername); xprt_release_write(xprt, task); task->tk_status = -EIO; } @@ -1229,6 +1230,17 @@ found: (unsigned long)xprt); else init_timer(&xprt->timer); + + if (strlen(args->servername) > RPC_MAXNETNAMELEN) { + xprt_destroy(xprt); + return ERR_PTR(-EINVAL); + } + xprt->servername = kstrdup(args->servername, GFP_KERNEL); + if (xprt->servername == NULL) { + xprt_destroy(xprt); + return ERR_PTR(-ENOMEM); + } + dprintk("RPC: created transport %p with %u slots\n", xprt, xprt->max_reqs); out: @@ -1251,6 +1263,7 @@ static void xprt_destroy(struct rpc_xprt *xprt) rpc_destroy_wait_queue(&xprt->sending); rpc_destroy_wait_queue(&xprt->backlog); cancel_work_sync(&xprt->task_cleanup); + kfree(xprt->servername); /* * Tear down transport state and free the rpc_xprt */ -- cgit v1.2.3-70-g09d2 From 81934ddb8eb62a85b8015c0f2b824a88510965a2 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Thu, 1 Mar 2012 17:01:57 -0500 Subject: NFS: Introduce NFS_ATTR_FATTR_V4_LOCATIONS The Linux NFS client must distinguish between referral events (which it currently supports) and migration events (which it does not yet support). In both types of events, an fs_locations array is returned. But upper layers, not the XDR layer, should make the distinction between a referral and a migration. There really isn't a way for an XDR decoder function to distinguish the two, in general. Slightly adjust the FATTR flags returned by decode_fs_locations() to set NFS_ATTR_FATTR_V4_LOCATIONS only if a non-empty locations array was returned from the server. Then have logic in nfs4proc.c distinguish whether the locations array is for a referral or something else. Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 6 +++--- fs/nfs/nfs4xdr.c | 2 +- include/linux/nfs_xdr.h | 11 ++++++----- 3 files changed, 10 insertions(+), 9 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 54767dd66cf..281c2def2b1 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -79,6 +79,7 @@ static int _nfs4_proc_open(struct nfs4_opendata *data); static int _nfs4_recover_proc_open(struct nfs4_opendata *data); static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); +static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, struct nfs_fattr *fattr, struct iattr *sattr, @@ -2340,7 +2341,6 @@ static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, return nfs4_map_errors(status); } -static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); /* * Get locations and (maybe) other attributes of a referral. * Note that we'll actually follow the referral later when @@ -4797,11 +4797,11 @@ static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || (fattr->valid & NFS_ATTR_FATTR_FILEID)) && (fattr->valid & NFS_ATTR_FATTR_FSID) && - (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL))) + (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) return; fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | - NFS_ATTR_FATTR_NLINK; + NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; fattr->nlink = 2; } diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 48f539314f2..a6fb55da874 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -3660,7 +3660,7 @@ static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, st res->nlocations++; } if (res->nlocations != 0) - status = NFS_ATTR_FATTR_V4_REFERRAL; + status = NFS_ATTR_FATTR_V4_LOCATIONS; out: dprintk("%s: fs_locations done, error = %d\n", __func__, status); return status; diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 046c1bfddc3..210da5dc4f1 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -88,11 +88,12 @@ struct nfs_fattr { #define NFS_ATTR_FATTR_PRECTIME (1U << 16) #define NFS_ATTR_FATTR_CHANGE (1U << 17) #define NFS_ATTR_FATTR_PRECHANGE (1U << 18) -#define NFS_ATTR_FATTR_V4_REFERRAL (1U << 19) /* NFSv4 referral */ -#define NFS_ATTR_FATTR_MOUNTPOINT (1U << 20) /* Treat as mountpoint */ -#define NFS_ATTR_FATTR_MOUNTED_ON_FILEID (1U << 21) -#define NFS_ATTR_FATTR_OWNER_NAME (1U << 22) -#define NFS_ATTR_FATTR_GROUP_NAME (1U << 23) +#define NFS_ATTR_FATTR_V4_LOCATIONS (1U << 19) +#define NFS_ATTR_FATTR_V4_REFERRAL (1U << 20) +#define NFS_ATTR_FATTR_MOUNTPOINT (1U << 21) +#define NFS_ATTR_FATTR_MOUNTED_ON_FILEID (1U << 22) +#define NFS_ATTR_FATTR_OWNER_NAME (1U << 23) +#define NFS_ATTR_FATTR_GROUP_NAME (1U << 24) #define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \ | NFS_ATTR_FATTR_MODE \ -- cgit v1.2.3-70-g09d2 From 264e6351c59d22303582c45d79f0a5735f51d8d1 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Thu, 1 Mar 2012 17:02:05 -0500 Subject: NFS: Request fh_expire_type attribute in "server caps" operation The fh_expire_type file attribute is a filesystem wide attribute that consists of flags that indicate what characteristics file handles on this FSID have. Our client doesn't support volatile file handles. It should find out early (say, at mount time) whether the server is going to play shenanighans with file handles during a migration. Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 1 + fs/nfs/nfs4xdr.c | 26 ++++++++++++++++++++++++++ include/linux/nfs_fs_sb.h | 3 +++ include/linux/nfs_xdr.h | 1 + 4 files changed, 31 insertions(+) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 281c2def2b1..87b9b91f76c 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2220,6 +2220,7 @@ static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *f server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; server->acl_bitmask = res.acl_bitmask; + server->fh_expire_type = res.fh_expire_type; } return status; diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index a6fb55da874..3e0fe9f92e7 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -2676,6 +2676,7 @@ static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req, encode_sequence(xdr, &args->seq_args, &hdr); encode_putfh(xdr, args->fhandle, &hdr); encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS| + FATTR4_WORD0_FH_EXPIRE_TYPE| FATTR4_WORD0_LINK_SUPPORT| FATTR4_WORD0_SYMLINK_SUPPORT| FATTR4_WORD0_ACLSUPPORT, &hdr); @@ -3223,6 +3224,28 @@ out_overflow: return -EIO; } +static int decode_attr_fh_expire_type(struct xdr_stream *xdr, + uint32_t *bitmap, uint32_t *type) +{ + __be32 *p; + + *type = 0; + if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U))) + return -EIO; + if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) { + p = xdr_inline_decode(xdr, 4); + if (unlikely(!p)) + goto out_overflow; + *type = be32_to_cpup(p); + bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE; + } + dprintk("%s: expire type=0x%x\n", __func__, *type); + return 0; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} + static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change) { __be32 *p; @@ -4271,6 +4294,9 @@ static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_re goto xdr_error; if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0) goto xdr_error; + if ((status = decode_attr_fh_expire_type(xdr, bitmap, + &res->fh_expire_type)) != 0) + goto xdr_error; if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0) goto xdr_error; if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0) diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 03d0b91c2d5..7073fc74481 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -148,6 +148,9 @@ struct nfs_server { u32 acl_bitmask; /* V4 bitmask representing the ACEs that are supported on this filesystem */ + u32 fh_expire_type; /* V4 bitmask representing file + handle volatility type for + this filesystem */ struct pnfs_layoutdriver_type *pnfs_curr_ld; /* Active layout driver */ struct rpc_wait_queue roc_rpcwaitq; void *pnfs_ld_data; /* per mount point data */ diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 210da5dc4f1..6f4c3594196 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -977,6 +977,7 @@ struct nfs4_server_caps_res { u32 acl_bitmask; u32 has_links; u32 has_symlinks; + u32 fh_expire_type; struct nfs4_sequence_res seq_res; }; -- cgit v1.2.3-70-g09d2 From a1d0b5eebc4fd6e0edb02688b35f17f67f42aea5 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 5 Mar 2012 19:56:44 -0500 Subject: NFS: Properly handle the case where the delegation is revoked If we know that the delegation stateid is bad or revoked, we need to remove that delegation as soon as possible, and then mark all the stateids that relied on that delegation for recovery. We cannot use the delegation as part of the recovery process. Also note that NFSv4.1 uses a different error code (NFS4ERR_DELEG_REVOKED) to indicate that the delegation was revoked. Finally, ensure that setlk() and setattr() can both recover safely from a revoked delegation. Signed-off-by: Trond Myklebust Cc: stable@vger.kernel.org --- fs/nfs/delegation.c | 11 +++++++++++ fs/nfs/delegation.h | 1 + fs/nfs/nfs4_fs.h | 2 ++ fs/nfs/nfs4proc.c | 18 ++++++++++++++++-- fs/nfs/nfs4state.c | 29 +++++++++++++++++++++++++++-- 5 files changed, 57 insertions(+), 4 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index 7f265406980..ac889af8ccf 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -466,6 +466,17 @@ static void nfs_delegation_run_state_manager(struct nfs_client *clp) nfs4_schedule_state_manager(clp); } +void nfs_remove_bad_delegation(struct inode *inode) +{ + struct nfs_delegation *delegation; + + delegation = nfs_detach_delegation(NFS_I(inode), NFS_SERVER(inode)); + if (delegation) { + nfs_inode_find_state_and_recover(inode, &delegation->stateid); + nfs_free_delegation(delegation); + } +} + /** * nfs_expire_all_delegation_types * @clp: client to process diff --git a/fs/nfs/delegation.h b/fs/nfs/delegation.h index d9322e490c5..691a7960918 100644 --- a/fs/nfs/delegation.h +++ b/fs/nfs/delegation.h @@ -45,6 +45,7 @@ void nfs_expire_unreferenced_delegations(struct nfs_client *clp); void nfs_handle_cb_pathdown(struct nfs_client *clp); int nfs_client_return_marked_delegations(struct nfs_client *clp); int nfs_delegations_present(struct nfs_client *clp); +void nfs_remove_bad_delegation(struct inode *inode); void nfs_delegation_mark_reclaim(struct nfs_client *clp); void nfs_delegation_reap_unclaimed(struct nfs_client *clp); diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 19079ec8252..7ddad3fa407 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -317,6 +317,8 @@ extern void nfs4_put_open_state(struct nfs4_state *); extern void nfs4_close_state(struct nfs4_state *, fmode_t); extern void nfs4_close_sync(struct nfs4_state *, fmode_t); extern void nfs4_state_set_mode_locked(struct nfs4_state *, fmode_t); +extern void nfs_inode_find_state_and_recover(struct inode *inode, + const nfs4_stateid *stateid); extern void nfs4_schedule_lease_recovery(struct nfs_client *); extern void nfs4_schedule_state_manager(struct nfs_client *); extern void nfs4_schedule_path_down_recovery(struct nfs_client *clp); diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index ea7adfc868c..f31fcea1af7 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -268,8 +268,11 @@ static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struc switch(errorcode) { case 0: return 0; + case -NFS4ERR_DELEG_REVOKED: case -NFS4ERR_ADMIN_REVOKED: case -NFS4ERR_BAD_STATEID: + if (state != NULL) + nfs_remove_bad_delegation(state->inode); case -NFS4ERR_OPENMODE: if (state == NULL) break; @@ -1331,8 +1334,11 @@ int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state * The show must go on: exit, but mark the * stateid as needing recovery. */ + case -NFS4ERR_DELEG_REVOKED: case -NFS4ERR_ADMIN_REVOKED: case -NFS4ERR_BAD_STATEID: + nfs_inode_find_state_and_recover(state->inode, + stateid); nfs4_schedule_stateid_recovery(server, state); case -EKEYEXPIRED: /* @@ -1931,7 +1937,9 @@ static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, struct nfs4_state *state) { struct nfs_server *server = NFS_SERVER(inode); - struct nfs4_exception exception = { }; + struct nfs4_exception exception = { + .state = state, + }; int err; do { err = nfs4_handle_exception(server, @@ -3760,8 +3768,11 @@ nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, if (task->tk_status >= 0) return 0; switch(task->tk_status) { + case -NFS4ERR_DELEG_REVOKED: case -NFS4ERR_ADMIN_REVOKED: case -NFS4ERR_BAD_STATEID: + if (state != NULL) + nfs_remove_bad_delegation(state->inode); case -NFS4ERR_OPENMODE: if (state == NULL) break; @@ -4604,7 +4615,9 @@ out: static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) { - struct nfs4_exception exception = { }; + struct nfs4_exception exception = { + .state = state, + }; int err; do { @@ -4697,6 +4710,7 @@ int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) * The show must go on: exit, but mark the * stateid as needing recovery. */ + case -NFS4ERR_DELEG_REVOKED: case -NFS4ERR_ADMIN_REVOKED: case -NFS4ERR_BAD_STATEID: case -NFS4ERR_OPENMODE: diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 2f760604246..d60e7ad2690 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -1106,12 +1106,37 @@ void nfs4_schedule_stateid_recovery(const struct nfs_server *server, struct nfs4 { struct nfs_client *clp = server->nfs_client; - if (test_and_clear_bit(NFS_DELEGATED_STATE, &state->flags)) - nfs_async_inode_return_delegation(state->inode, &state->stateid); nfs4_state_mark_reclaim_nograce(clp, state); nfs4_schedule_state_manager(clp); } +void nfs_inode_find_state_and_recover(struct inode *inode, + const nfs4_stateid *stateid) +{ + struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; + struct nfs_inode *nfsi = NFS_I(inode); + struct nfs_open_context *ctx; + struct nfs4_state *state; + bool found = false; + + spin_lock(&inode->i_lock); + list_for_each_entry(ctx, &nfsi->open_files, list) { + state = ctx->state; + if (state == NULL) + continue; + if (!test_bit(NFS_DELEGATED_STATE, &state->flags)) + continue; + if (memcmp(state->stateid.data, stateid->data, sizeof(state->stateid.data)) != 0) + continue; + nfs4_state_mark_reclaim_nograce(clp, state); + found = true; + } + spin_unlock(&inode->i_lock); + if (found) + nfs4_schedule_state_manager(clp); +} + + static int nfs4_reclaim_locks(struct nfs4_state *state, const struct nfs4_state_recovery_ops *ops) { struct inode *inode = state->inode; -- cgit v1.2.3-70-g09d2 From 36281caa839f4441c793c81d2e3cc5ea44ad5aa2 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sun, 4 Mar 2012 18:13:56 -0500 Subject: NFSv4: Further clean-ups of delegation stateid validation Change the name to reflect what we're really doing: testing two stateids for whether or not they match according the the rules in RFC3530 and RFC5661. Move the code from callback_proc.c to nfs4proc.c Signed-off-by: Trond Myklebust --- fs/nfs/callback_proc.c | 24 ------------------------ fs/nfs/delegation.c | 2 +- fs/nfs/nfs4_fs.h | 2 +- fs/nfs/nfs4proc.c | 27 +++++++++++++++++++++++++-- 4 files changed, 27 insertions(+), 28 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c index ea8321923f2..1b5d809a105 100644 --- a/fs/nfs/callback_proc.c +++ b/fs/nfs/callback_proc.c @@ -98,14 +98,6 @@ out: return res; } -int nfs4_validate_delegation_stateid(struct nfs_delegation *delegation, const nfs4_stateid *stateid) -{ - if (delegation == NULL || memcmp(delegation->stateid.data, stateid->data, - sizeof(delegation->stateid.data)) != 0) - return 0; - return 1; -} - #if defined(CONFIG_NFS_V4_1) /* @@ -319,22 +311,6 @@ out: return res; } -int nfs41_validate_delegation_stateid(struct nfs_delegation *delegation, const nfs4_stateid *stateid) -{ - if (delegation == NULL) - return 0; - - if (stateid->stateid.seqid != 0 && - stateid->stateid.seqid != delegation->stateid.stateid.seqid) - return 0; - if (memcmp(delegation->stateid.stateid.other, - stateid->stateid.other, - NFS4_STATEID_OTHER_SIZE)) - return 0; - - return 1; -} - /* * Validate the sequenceID sent by the server. * Return success if the sequenceID is one more than what we last saw on diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index c14512cea79..c7249e26e2e 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -556,7 +556,7 @@ int nfs_async_inode_return_delegation(struct inode *inode, rcu_read_lock(); delegation = rcu_dereference(NFS_I(inode)->delegation); - if (!clp->cl_mvops->validate_stateid(delegation, stateid)) { + if (!clp->cl_mvops->match_stateid(&delegation->stateid, stateid)) { rcu_read_unlock(); return -ENOENT; } diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 7ddad3fa407..624d4becf01 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -43,7 +43,7 @@ struct nfs4_minor_version_ops { struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, int cache_reply); - int (*validate_stateid)(struct nfs_delegation *, + bool (*match_stateid)(const nfs4_stateid *, const nfs4_stateid *); int (*find_root_sec)(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index f31fcea1af7..b0647b38740 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -6271,8 +6271,31 @@ static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) } while (exception.retry); return err; } + +static bool nfs41_match_stateid(const nfs4_stateid *s1, + const nfs4_stateid *s2) +{ + if (memcmp(s1->stateid.other, s2->stateid.other, + sizeof(s1->stateid.other)) != 0) + return false; + + if (s1->stateid.seqid == s2->stateid.seqid) + return true; + if (s1->stateid.seqid == 0 || s2->stateid.seqid == 0) + return true; + + return false; +} + #endif /* CONFIG_NFS_V4_1 */ +static bool nfs4_match_stateid(const nfs4_stateid *s1, + const nfs4_stateid *s2) +{ + return memcmp(s1->data, s2->data, sizeof(s1->data)) == 0; +} + + struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, @@ -6331,7 +6354,7 @@ struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { .minor_version = 0, .call_sync = _nfs4_call_sync, - .validate_stateid = nfs4_validate_delegation_stateid, + .match_stateid = nfs4_match_stateid, .find_root_sec = nfs4_find_root_sec, .reboot_recovery_ops = &nfs40_reboot_recovery_ops, .nograce_recovery_ops = &nfs40_nograce_recovery_ops, @@ -6342,7 +6365,7 @@ static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { .minor_version = 1, .call_sync = _nfs4_call_sync_session, - .validate_stateid = nfs41_validate_delegation_stateid, + .match_stateid = nfs41_match_stateid, .find_root_sec = nfs41_find_root_sec, .reboot_recovery_ops = &nfs41_reboot_recovery_ops, .nograce_recovery_ops = &nfs41_nograce_recovery_ops, -- cgit v1.2.3-70-g09d2 From 1e3987c3052a48fbfc8f5d30214c825eff41192d Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sun, 4 Mar 2012 18:13:56 -0500 Subject: NFSv4: Rename nfs4_copy_stateid() It is really a function for selecting the correct stateid to use in a read or write situation. Signed-off-by: Trond Myklebust --- fs/nfs/nfs4_fs.h | 2 +- fs/nfs/nfs4proc.c | 2 +- fs/nfs/nfs4state.c | 2 +- fs/nfs/nfs4xdr.c | 2 +- 4 files changed, 4 insertions(+), 4 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 624d4becf01..308d2f999c3 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -329,7 +329,7 @@ extern void nfs41_handle_server_scope(struct nfs_client *, struct server_scope **); extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp); extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl); -extern void nfs4_copy_stateid(nfs4_stateid *, struct nfs4_state *, fl_owner_t, pid_t); +extern void nfs4_select_rw_stateid(nfs4_stateid *, struct nfs4_state *, fl_owner_t, pid_t); extern struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter, gfp_t gfp_mask); extern int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task); diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index b0647b38740..f181c70ea93 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -1922,7 +1922,7 @@ static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { /* Use that stateid */ } else if (state != NULL) { - nfs4_copy_stateid(&arg.stateid, state, current->files, current->tgid); + nfs4_select_rw_stateid(&arg.stateid, state, current->files, current->tgid); } else memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index d60e7ad2690..6ba82271c86 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -888,7 +888,7 @@ int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl) * Byte-range lock aware utility to initialize the stateid of read/write * requests. */ -void nfs4_copy_stateid(nfs4_stateid *dst, struct nfs4_state *state, fl_owner_t fl_owner, pid_t fl_pid) +void nfs4_select_rw_stateid(nfs4_stateid *dst, struct nfs4_state *state, fl_owner_t fl_owner, pid_t fl_pid) { struct nfs4_lock_state *lsp; int seq; diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index c03ba77679a..38736dca1b1 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -1546,7 +1546,7 @@ static void encode_open_stateid(struct xdr_stream *xdr, const struct nfs_open_co nfs4_stateid stateid; if (ctx->state != NULL) { - nfs4_copy_stateid(&stateid, ctx->state, l_ctx->lockowner, l_ctx->pid); + nfs4_select_rw_stateid(&stateid, ctx->state, l_ctx->lockowner, l_ctx->pid); if (zero_seqid) stateid.stateid.seqid = 0; encode_nfs4_stateid(xdr, &stateid); -- cgit v1.2.3-70-g09d2 From f597c53790f662662281b82b7692a22d2a4d4afa Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sun, 4 Mar 2012 18:13:56 -0500 Subject: NFSv4: Add helpers for basic copying of stateids Signed-off-by: Trond Myklebust --- fs/nfs/delegation.c | 14 ++++++-------- fs/nfs/nfs4_fs.h | 10 ++++++++++ fs/nfs/nfs4proc.c | 34 +++++++++++++++------------------- fs/nfs/nfs4state.c | 6 +++--- fs/nfs/pnfs.c | 10 ++++------ 5 files changed, 38 insertions(+), 36 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index c7249e26e2e..87f7544f3dc 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -105,7 +105,7 @@ again: continue; if (!test_bit(NFS_DELEGATED_STATE, &state->flags)) continue; - if (memcmp(state->stateid.data, stateid->data, sizeof(state->stateid.data)) != 0) + if (!nfs4_stateid_match(&state->stateid, stateid)) continue; get_nfs_open_context(ctx); spin_unlock(&inode->i_lock); @@ -139,8 +139,7 @@ void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred, if (delegation != NULL) { spin_lock(&delegation->lock); if (delegation->inode != NULL) { - memcpy(delegation->stateid.data, res->delegation.data, - sizeof(delegation->stateid.data)); + nfs4_stateid_copy(&delegation->stateid, &res->delegation); delegation->type = res->delegation_type; delegation->maxsize = res->maxsize; oldcred = delegation->cred; @@ -236,8 +235,7 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct delegation = kmalloc(sizeof(*delegation), GFP_NOFS); if (delegation == NULL) return -ENOMEM; - memcpy(delegation->stateid.data, res->delegation.data, - sizeof(delegation->stateid.data)); + nfs4_stateid_copy(&delegation->stateid, &res->delegation); delegation->type = res->delegation_type; delegation->maxsize = res->maxsize; delegation->change_attr = inode->i_version; @@ -250,8 +248,8 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct old_delegation = rcu_dereference_protected(nfsi->delegation, lockdep_is_held(&clp->cl_lock)); if (old_delegation != NULL) { - if (memcmp(&delegation->stateid, &old_delegation->stateid, - sizeof(old_delegation->stateid)) == 0 && + if (nfs4_stateid_match(&delegation->stateid, + &old_delegation->stateid) && delegation->type == old_delegation->type) { goto out; } @@ -708,7 +706,7 @@ int nfs4_copy_delegation_stateid(nfs4_stateid *dst, struct inode *inode) rcu_read_lock(); delegation = rcu_dereference(nfsi->delegation); if (delegation != NULL) { - memcpy(dst->data, delegation->stateid.data, sizeof(dst->data)); + nfs4_stateid_copy(dst, &delegation->stateid); ret = 1; } rcu_read_unlock(); diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 308d2f999c3..1c54ef3146d 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -349,6 +349,16 @@ struct nfs4_mount_data; extern struct svc_version nfs4_callback_version1; extern struct svc_version nfs4_callback_version4; +static inline void nfs4_stateid_copy(nfs4_stateid *dst, const nfs4_stateid *src) +{ + memcpy(dst->data, src->data, sizeof(dst->data)); +} + +static inline bool nfs4_stateid_match(const nfs4_stateid *dst, const nfs4_stateid *src) +{ + return memcmp(dst->data, src->data, sizeof(dst->data)) == 0; +} + #else #define nfs4_close_state(a, b) do { } while (0) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index f181c70ea93..ce0ad81dd46 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -941,8 +941,8 @@ static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) { if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) - memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); - memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); + nfs4_stateid_copy(&state->stateid, stateid); + nfs4_stateid_copy(&state->open_stateid, stateid); switch (fmode) { case FMODE_READ: set_bit(NFS_O_RDONLY_STATE, &state->flags); @@ -970,7 +970,7 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s */ write_seqlock(&state->seqlock); if (deleg_stateid != NULL) { - memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); + nfs4_stateid_copy(&state->stateid, deleg_stateid); set_bit(NFS_DELEGATED_STATE, &state->flags); } if (open_stateid != NULL) @@ -1001,7 +1001,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat if (delegation == NULL) delegation = &deleg_cur->stateid; - else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0) + else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) goto no_delegation_unlock; nfs_mark_delegation_referenced(deleg_cur); @@ -1062,7 +1062,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) break; } /* Save the delegation */ - memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); + nfs4_stateid_copy(&stateid, &delegation->stateid); rcu_read_unlock(); ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); if (ret != 0) @@ -1225,10 +1225,10 @@ static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state * * Check if we need to update the current stateid. */ if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && - memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { + !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { write_seqlock(&state->seqlock); if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) - memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); + nfs4_stateid_copy(&state->stateid, &state->open_stateid); write_sequnlock(&state->seqlock); } return 0; @@ -1297,8 +1297,7 @@ static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs if (IS_ERR(opendata)) return PTR_ERR(opendata); opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; - memcpy(opendata->o_arg.u.delegation.data, stateid->data, - sizeof(opendata->o_arg.u.delegation.data)); + nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); ret = nfs4_open_recover(opendata, state); nfs4_opendata_put(opendata); return ret; @@ -1363,8 +1362,7 @@ static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) data->rpc_status = task->tk_status; if (data->rpc_status == 0) { - memcpy(data->o_res.stateid.data, data->c_res.stateid.data, - sizeof(data->o_res.stateid.data)); + nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); nfs_confirm_seqid(&data->owner->so_seqid, 0); renew_lease(data->o_res.server, data->timestamp); data->rpc_done = 1; @@ -1924,7 +1922,7 @@ static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, } else if (state != NULL) { nfs4_select_rw_stateid(&arg.stateid, state, current->files, current->tgid); } else - memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); + nfs4_stateid_copy(&arg.stateid, &zero_stateid); status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); if (status == 0 && state != NULL) @@ -3989,7 +3987,7 @@ static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, co data->args.stateid = &data->stateid; data->args.bitmask = server->attr_bitmask; nfs_copy_fh(&data->fh, NFS_FH(inode)); - memcpy(&data->stateid, stateid, sizeof(data->stateid)); + nfs4_stateid_copy(&data->stateid, stateid); data->res.fattr = &data->fattr; data->res.server = server; nfs_fattr_init(data->res.fattr); @@ -4172,9 +4170,8 @@ static void nfs4_locku_done(struct rpc_task *task, void *data) return; switch (task->tk_status) { case 0: - memcpy(calldata->lsp->ls_stateid.data, - calldata->res.stateid.data, - sizeof(calldata->lsp->ls_stateid.data)); + nfs4_stateid_copy(&calldata->lsp->ls_stateid, + &calldata->res.stateid); renew_lease(calldata->server, calldata->timestamp); break; case -NFS4ERR_BAD_STATEID: @@ -4387,8 +4384,7 @@ static void nfs4_lock_done(struct rpc_task *task, void *calldata) goto out; } if (data->rpc_status == 0) { - memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, - sizeof(data->lsp->ls_stateid.data)); + nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); } @@ -6292,7 +6288,7 @@ static bool nfs41_match_stateid(const nfs4_stateid *s1, static bool nfs4_match_stateid(const nfs4_stateid *s1, const nfs4_stateid *s2) { - return memcmp(s1->data, s2->data, sizeof(s1->data)) == 0; + return nfs4_stateid_match(s1, s2); } diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 6ba82271c86..55c8a81cd6f 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -895,7 +895,7 @@ void nfs4_select_rw_stateid(nfs4_stateid *dst, struct nfs4_state *state, fl_owne do { seq = read_seqbegin(&state->seqlock); - memcpy(dst, &state->stateid, sizeof(*dst)); + nfs4_stateid_copy(dst, &state->stateid); } while (read_seqretry(&state->seqlock, seq)); if (test_bit(LK_STATE_IN_USE, &state->flags) == 0) return; @@ -903,7 +903,7 @@ void nfs4_select_rw_stateid(nfs4_stateid *dst, struct nfs4_state *state, fl_owne spin_lock(&state->state_lock); lsp = __nfs4_find_lock_state(state, fl_owner, fl_pid, NFS4_ANY_LOCK_TYPE); if (lsp != NULL && (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) - memcpy(dst, &lsp->ls_stateid, sizeof(*dst)); + nfs4_stateid_copy(dst, &lsp->ls_stateid); spin_unlock(&state->state_lock); nfs4_put_lock_state(lsp); } @@ -1126,7 +1126,7 @@ void nfs_inode_find_state_and_recover(struct inode *inode, continue; if (!test_bit(NFS_DELEGATED_STATE, &state->flags)) continue; - if (memcmp(state->stateid.data, stateid->data, sizeof(state->stateid.data)) != 0) + if (!nfs4_stateid_match(&state->stateid, stateid)) continue; nfs4_state_mark_reclaim_nograce(clp, state); found = true; diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 402efc2f5b7..c190e9c2e3d 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -499,7 +499,7 @@ pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo, const nfs4_stateid *new, oldseq = be32_to_cpu(lo->plh_stateid.stateid.seqid); newseq = be32_to_cpu(new->stateid.seqid); if ((int)(newseq - oldseq) > 0) { - memcpy(&lo->plh_stateid, &new->stateid, sizeof(new->stateid)); + nfs4_stateid_copy(&lo->plh_stateid, new); if (update_barrier) { u32 new_barrier = be32_to_cpu(new->stateid.seqid); @@ -549,11 +549,10 @@ pnfs_choose_layoutget_stateid(nfs4_stateid *dst, struct pnfs_layout_hdr *lo, do { seq = read_seqbegin(&open_state->seqlock); - memcpy(dst->data, open_state->stateid.data, - sizeof(open_state->stateid.data)); + nfs4_stateid_copy(dst, &open_state->stateid); } while (read_seqretry(&open_state->seqlock, seq)); } else - memcpy(dst->data, lo->plh_stateid.data, sizeof(lo->plh_stateid.data)); + nfs4_stateid_copy(dst, &lo->plh_stateid); spin_unlock(&lo->plh_inode->i_lock); dprintk("<-- %s\n", __func__); return status; @@ -1527,8 +1526,7 @@ pnfs_layoutcommit_inode(struct inode *inode, bool sync) end_pos = nfsi->layout->plh_lwb; nfsi->layout->plh_lwb = 0; - memcpy(&data->args.stateid.data, nfsi->layout->plh_stateid.data, - sizeof(nfsi->layout->plh_stateid.data)); + nfs4_stateid_copy(&data->args.stateid, &nfsi->layout->plh_stateid); spin_unlock(&inode->i_lock); data->args.inode = inode; -- cgit v1.2.3-70-g09d2 From 2d2f24add1ff903ff8e0ce61c5c05635cc636985 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sun, 4 Mar 2012 18:13:57 -0500 Subject: NFSv4: Simplify the struct nfs4_stateid Replace the union with the common struct stateid4 as defined in both RFC3530 and RFC5661. This makes it easier to access the sequence id, which will again make implementing support for parallel OPEN calls easier. Signed-off-by: Trond Myklebust --- fs/nfs/callback_xdr.c | 4 ++-- fs/nfs/nfs4_fs.h | 4 ++-- fs/nfs/nfs4proc.c | 7 +++---- fs/nfs/nfs4state.c | 4 ++-- fs/nfs/nfs4xdr.c | 6 +++--- fs/nfs/pnfs.c | 10 +++++----- include/linux/nfs4.h | 7 ++----- 7 files changed, 19 insertions(+), 23 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c index 5466829c7e7..fd6cfdb917d 100644 --- a/fs/nfs/callback_xdr.c +++ b/fs/nfs/callback_xdr.c @@ -138,10 +138,10 @@ static __be32 decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) { __be32 *p; - p = read_buf(xdr, 16); + p = read_buf(xdr, NFS4_STATEID_SIZE); if (unlikely(p == NULL)) return htonl(NFS4ERR_RESOURCE); - memcpy(stateid->data, p, 16); + memcpy(stateid, p, NFS4_STATEID_SIZE); return 0; } diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 1c54ef3146d..16373df96f9 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -351,12 +351,12 @@ extern struct svc_version nfs4_callback_version4; static inline void nfs4_stateid_copy(nfs4_stateid *dst, const nfs4_stateid *src) { - memcpy(dst->data, src->data, sizeof(dst->data)); + memcpy(dst, src, sizeof(*dst)); } static inline bool nfs4_stateid_match(const nfs4_stateid *dst, const nfs4_stateid *src) { - return memcmp(dst->data, src->data, sizeof(dst->data)) == 0; + return memcmp(dst, src, sizeof(*dst)) == 0; } #else diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index ce0ad81dd46..e0e35288361 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -6271,13 +6271,12 @@ static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) static bool nfs41_match_stateid(const nfs4_stateid *s1, const nfs4_stateid *s2) { - if (memcmp(s1->stateid.other, s2->stateid.other, - sizeof(s1->stateid.other)) != 0) + if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) return false; - if (s1->stateid.seqid == s2->stateid.seqid) + if (s1->seqid == s2->seqid) return true; - if (s1->stateid.seqid == 0 || s2->stateid.seqid == 0) + if (s1->seqid == 0 || s2->seqid == 0) return true; return false; diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 55c8a81cd6f..1dad5c53c7f 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -1240,8 +1240,8 @@ restart: * Open state on this file cannot be recovered * All we can do is revert to using the zero stateid. */ - memset(state->stateid.data, 0, - sizeof(state->stateid.data)); + memset(&state->stateid, 0, + sizeof(state->stateid)); /* Mark the file as being 'closed' */ state->state = 0; break; diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 38736dca1b1..76ef9863283 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -930,7 +930,7 @@ static void encode_nops(struct compound_hdr *hdr) static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid) { - encode_opaque_fixed(xdr, stateid->data, NFS4_STATEID_SIZE); + encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE); } static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf) @@ -1548,7 +1548,7 @@ static void encode_open_stateid(struct xdr_stream *xdr, const struct nfs_open_co if (ctx->state != NULL) { nfs4_select_rw_stateid(&stateid, ctx->state, l_ctx->lockowner, l_ctx->pid); if (zero_seqid) - stateid.stateid.seqid = 0; + stateid.seqid = 0; encode_nfs4_stateid(xdr, &stateid); } else encode_nfs4_stateid(xdr, &zero_stateid); @@ -4237,7 +4237,7 @@ static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len) static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) { - return decode_opaque_fixed(xdr, stateid->data, NFS4_STATEID_SIZE); + return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE); } static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res) diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index c190e9c2e3d..6f1c1e3d12b 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -496,12 +496,12 @@ pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo, const nfs4_stateid *new, { u32 oldseq, newseq; - oldseq = be32_to_cpu(lo->plh_stateid.stateid.seqid); - newseq = be32_to_cpu(new->stateid.seqid); + oldseq = be32_to_cpu(lo->plh_stateid.seqid); + newseq = be32_to_cpu(new->seqid); if ((int)(newseq - oldseq) > 0) { nfs4_stateid_copy(&lo->plh_stateid, new); if (update_barrier) { - u32 new_barrier = be32_to_cpu(new->stateid.seqid); + u32 new_barrier = be32_to_cpu(new->seqid); if ((int)(new_barrier - lo->plh_barrier)) lo->plh_barrier = new_barrier; @@ -525,7 +525,7 @@ pnfs_layoutgets_blocked(struct pnfs_layout_hdr *lo, nfs4_stateid *stateid, int lget) { if ((stateid) && - (int)(lo->plh_barrier - be32_to_cpu(stateid->stateid.seqid)) >= 0) + (int)(lo->plh_barrier - be32_to_cpu(stateid->seqid)) >= 0) return true; return lo->plh_block_lgets || test_bit(NFS_LAYOUT_DESTROYED, &lo->plh_flags) || @@ -759,7 +759,7 @@ bool pnfs_roc_drain(struct inode *ino, u32 *barrier) } if (!found) { struct pnfs_layout_hdr *lo = nfsi->layout; - u32 current_seqid = be32_to_cpu(lo->plh_stateid.stateid.seqid); + u32 current_seqid = be32_to_cpu(lo->plh_stateid.seqid); /* Since close does not return a layout stateid for use as * a barrier, we choose the worst-case barrier. diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h index 32345c2805c..834df8bf08b 100644 --- a/include/linux/nfs4.h +++ b/include/linux/nfs4.h @@ -183,15 +183,12 @@ struct nfs4_acl { typedef struct { char data[NFS4_VERIFIER_SIZE]; } nfs4_verifier; -struct nfs41_stateid { +struct nfs_stateid4 { __be32 seqid; char other[NFS4_STATEID_OTHER_SIZE]; } __attribute__ ((packed)); -typedef union { - char data[NFS4_STATEID_SIZE]; - struct nfs41_stateid stateid; -} nfs4_stateid; +typedef struct nfs_stateid4 nfs4_stateid; enum nfs_opnum4 { OP_ACCESS = 3, -- cgit v1.2.3-70-g09d2 From cd93710e8d290711ba2e08e1d1a380013aad667d Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Fri, 2 Mar 2012 17:14:31 -0500 Subject: NFS: Fix nfs4_verifier memory alignment Clean up due to code review. The nfs4_verifier's data field is not guaranteed to be u32-aligned. Casting an array of chars to a u32 * is considered generally hazardous. Fix this by using a __be32 array to generate a verifier's contents, and then byte-copy the contents into the verifier field. The contents of a verifier, for all intents and purposes, are opaque bytes. Only local code that generates a verifier need know the actual content and format. Everyone else compares the full byte array for exact equality. Also, sizeof(nfs4_verifer) is the size of the in-core verifier data structure, but NFS4_VERIFIER_SIZE is the number of octets in an XDR'd verifier. The two are not interchangeable, even if they happen to have the same value. Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 32 +++++++++++++++++++------------- fs/nfs/nfs4xdr.c | 40 ++++++++++++++++++++-------------------- 2 files changed, 39 insertions(+), 33 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index e0e35288361..1ec05222ccb 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -836,13 +836,15 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, p->o_arg.dir_bitmask = server->cache_consistency_bitmask; p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; if (attrs != NULL && attrs->ia_valid != 0) { - u32 *s; + __be32 verf[2]; p->o_arg.u.attrs = &p->attrs; memcpy(&p->attrs, attrs, sizeof(p->attrs)); - s = (u32 *) p->o_arg.u.verifier.data; - s[0] = jiffies; - s[1] = current->pid; + + verf[0] = jiffies; + verf[1] = current->pid; + memcpy(p->o_arg.u.verifier.data, verf, + sizeof(p->o_arg.u.verifier.data)); } p->c_arg.fh = &p->o_res.fh; p->c_arg.stateid = &p->o_res.stateid; @@ -3819,6 +3821,16 @@ wait_on_recovery: return -EAGAIN; } +static void nfs4_construct_boot_verifier(struct nfs_client *clp, + nfs4_verifier *bootverf) +{ + __be32 verf[2]; + + verf[0] = htonl((u32)clp->cl_boot_time.tv_sec); + verf[1] = htonl((u32)clp->cl_boot_time.tv_nsec); + memcpy(bootverf->data, verf, sizeof(bootverf->data)); +} + int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, unsigned short port, struct rpc_cred *cred, struct nfs4_setclientid_res *res) @@ -3835,13 +3847,10 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, .rpc_resp = res, .rpc_cred = cred, }; - __be32 *p; int loop = 0; int status; - p = (__be32*)sc_verifier.data; - *p++ = htonl((u32)clp->cl_boot_time.tv_sec); - *p = htonl((u32)clp->cl_boot_time.tv_nsec); + nfs4_construct_boot_verifier(clp, &sc_verifier); for(;;) { rcu_read_lock(); @@ -4933,6 +4942,7 @@ int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) { nfs4_verifier verifier; struct nfs41_exchange_id_args args = { + .verifier = &verifier, .client = clp, .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, }; @@ -4946,15 +4956,11 @@ int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) .rpc_resp = &res, .rpc_cred = cred, }; - __be32 *p; dprintk("--> %s\n", __func__); BUG_ON(clp == NULL); - p = (u32 *)verifier.data; - *p++ = htonl((u32)clp->cl_boot_time.tv_sec); - *p = htonl((u32)clp->cl_boot_time.tv_nsec); - args.verifier = &verifier; + nfs4_construct_boot_verifier(clp, &verifier); args.id_len = scnprintf(args.id, sizeof(args.id), "%s/%s.%s/%u", diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index e9d4ac06b5d..62effaf579c 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -1538,7 +1538,7 @@ static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg FATTR4_WORD1_MOUNTED_ON_FILEID, }; uint32_t dircount = readdir->count >> 1; - __be32 *p; + __be32 *p, verf[2]; if (readdir->plus) { attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE| @@ -1553,10 +1553,11 @@ static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) attrs[0] |= FATTR4_WORD0_FILEID; - p = reserve_space(xdr, 12+NFS4_VERIFIER_SIZE+20); + p = reserve_space(xdr, 12); *p++ = cpu_to_be32(OP_READDIR); p = xdr_encode_hyper(p, readdir->cookie); - p = xdr_encode_opaque_fixed(p, readdir->verifier.data, NFS4_VERIFIER_SIZE); + encode_nfs4_verifier(xdr, &readdir->verifier); + p = reserve_space(xdr, 20); *p++ = cpu_to_be32(dircount); *p++ = cpu_to_be32(readdir->count); *p++ = cpu_to_be32(2); @@ -1565,11 +1566,11 @@ static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]); hdr->nops++; hdr->replen += decode_readdir_maxsz; + memcpy(verf, readdir->verifier.data, sizeof(verf)); dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n", __func__, (unsigned long long)readdir->cookie, - ((u32 *)readdir->verifier.data)[0], - ((u32 *)readdir->verifier.data)[1], + verf[0], verf[1], attrs[0] & readdir->bitmask[0], attrs[1] & readdir->bitmask[1]); } @@ -1643,9 +1644,9 @@ static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclie { __be32 *p; - p = reserve_space(xdr, 4 + NFS4_VERIFIER_SIZE); - *p++ = cpu_to_be32(OP_SETCLIENTID); - xdr_encode_opaque_fixed(p, setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE); + p = reserve_space(xdr, 4); + *p = cpu_to_be32(OP_SETCLIENTID); + encode_nfs4_verifier(xdr, setclientid->sc_verifier); encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name); p = reserve_space(xdr, 4); @@ -1662,10 +1663,10 @@ static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4 { __be32 *p; - p = reserve_space(xdr, 12 + NFS4_VERIFIER_SIZE); + p = reserve_space(xdr, 12); *p++ = cpu_to_be32(OP_SETCLIENTID_CONFIRM); p = xdr_encode_hyper(p, arg->clientid); - xdr_encode_opaque_fixed(p, arg->confirm.data, NFS4_VERIFIER_SIZE); + encode_nfs4_verifier(xdr, &arg->confirm); hdr->nops++; hdr->replen += decode_setclientid_confirm_maxsz; } @@ -1708,9 +1709,9 @@ static void encode_exchange_id(struct xdr_stream *xdr, char impl_name[NFS4_OPAQUE_LIMIT]; int len = 0; - p = reserve_space(xdr, 4 + sizeof(args->verifier->data)); - *p++ = cpu_to_be32(OP_EXCHANGE_ID); - xdr_encode_opaque_fixed(p, args->verifier->data, sizeof(args->verifier->data)); + p = reserve_space(xdr, 4); + *p = cpu_to_be32(OP_EXCHANGE_ID); + encode_nfs4_verifier(xdr, args->verifier); encode_string(xdr, args->id_len, args->id); @@ -4162,7 +4163,7 @@ static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res) static int decode_verifier(struct xdr_stream *xdr, void *verifier) { - return decode_opaque_fixed(xdr, verifier, 8); + return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE); } static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res) @@ -4854,17 +4855,16 @@ static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct n size_t hdrlen; u32 recvd, pglen = rcvbuf->page_len; int status; + __be32 verf[2]; status = decode_op_hdr(xdr, OP_READDIR); if (!status) status = decode_verifier(xdr, readdir->verifier.data); if (unlikely(status)) return status; + memcpy(verf, readdir->verifier.data, sizeof(verf)); dprintk("%s: verifier = %08x:%08x\n", - __func__, - ((u32 *)readdir->verifier.data)[0], - ((u32 *)readdir->verifier.data)[1]); - + __func__, verf[0], verf[1]); hdrlen = (char *) xdr->p - (char *) iov->iov_base; recvd = rcvbuf->len - hdrlen; @@ -5111,7 +5111,7 @@ static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res) goto out_overflow; res->count = be32_to_cpup(p++); res->verf->committed = be32_to_cpup(p++); - memcpy(res->verf->verifier, p, 8); + memcpy(res->verf->verifier, p, NFS4_VERIFIER_SIZE); return 0; out_overflow: print_overflow_msg(__func__, xdr); @@ -5455,7 +5455,7 @@ static int decode_getdevicelist(struct xdr_stream *xdr, p += 2; /* Read verifier */ - p = xdr_decode_opaque_fixed(p, verftemp.verifier, 8); + p = xdr_decode_opaque_fixed(p, verftemp.verifier, NFS4_VERIFIER_SIZE); res->num_devs = be32_to_cpup(p); -- cgit v1.2.3-70-g09d2 From cf470c3e004efe16d73dc8ba9b29bdc9a5327cda Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Wed, 7 Mar 2012 13:49:12 -0500 Subject: NFSv4: Don't free the nfs4_lock_state until after the release_lockowner Otherwise we can end up with sequence id problems if the client reuses the owner_id before the server has processed the release_lockowner Signed-off-by: Trond Myklebust --- fs/nfs/nfs4_fs.h | 4 +++- fs/nfs/nfs4proc.c | 31 ++++++++++++++++++++----------- fs/nfs/nfs4state.c | 8 +++++--- 3 files changed, 28 insertions(+), 15 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 16373df96f9..026878cb269 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -213,7 +213,7 @@ extern int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, boo extern int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle); extern int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, struct nfs4_fs_locations *fs_locations, struct page *page); -extern void nfs4_release_lockowner(const struct nfs4_lock_state *); +extern int nfs4_release_lockowner(struct nfs4_lock_state *); extern const struct xattr_handler *nfs4_xattr_handlers[]; #if defined(CONFIG_NFS_V4_1) @@ -338,6 +338,8 @@ extern void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid); extern void nfs_release_seqid(struct nfs_seqid *seqid); extern void nfs_free_seqid(struct nfs_seqid *seqid); +extern void nfs4_free_lock_state(struct nfs4_lock_state *lsp); + extern const nfs4_stateid zero_stateid; /* nfs4xdr.c */ diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 1ec05222ccb..32e0d08a977 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -4745,8 +4745,15 @@ out: return err; } +struct nfs_release_lockowner_data { + struct nfs4_lock_state *lsp; + struct nfs_release_lockowner_args args; +}; + static void nfs4_release_lockowner_release(void *calldata) { + struct nfs_release_lockowner_data *data = calldata; + nfs4_free_lock_state(data->lsp); kfree(calldata); } @@ -4754,24 +4761,26 @@ const struct rpc_call_ops nfs4_release_lockowner_ops = { .rpc_release = nfs4_release_lockowner_release, }; -void nfs4_release_lockowner(const struct nfs4_lock_state *lsp) +int nfs4_release_lockowner(struct nfs4_lock_state *lsp) { struct nfs_server *server = lsp->ls_state->owner->so_server; - struct nfs_release_lockowner_args *args; + struct nfs_release_lockowner_data *data; struct rpc_message msg = { .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], }; if (server->nfs_client->cl_mvops->minor_version != 0) - return; - args = kmalloc(sizeof(*args), GFP_NOFS); - if (!args) - return; - args->lock_owner.clientid = server->nfs_client->cl_clientid; - args->lock_owner.id = lsp->ls_seqid.owner_id; - args->lock_owner.s_dev = server->s_dev; - msg.rpc_argp = args; - rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args); + return -EINVAL; + data = kmalloc(sizeof(*data), GFP_NOFS); + if (!data) + return -ENOMEM; + data->lsp = lsp; + data->args.lock_owner.clientid = server->nfs_client->cl_clientid; + data->args.lock_owner.id = lsp->ls_seqid.owner_id; + data->args.lock_owner.s_dev = server->s_dev; + msg.rpc_argp = &data->args; + rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); + return 0; } #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index a58d02a0c27..7adc46b4c7f 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -784,7 +784,7 @@ out_free: return NULL; } -static void nfs4_free_lock_state(struct nfs4_lock_state *lsp) +void nfs4_free_lock_state(struct nfs4_lock_state *lsp) { struct nfs_server *server = lsp->ls_state->owner->so_server; @@ -842,8 +842,10 @@ void nfs4_put_lock_state(struct nfs4_lock_state *lsp) if (list_empty(&state->lock_states)) clear_bit(LK_STATE_IN_USE, &state->flags); spin_unlock(&state->state_lock); - if (lsp->ls_flags & NFS_LOCK_INITIALIZED) - nfs4_release_lockowner(lsp); + if (lsp->ls_flags & NFS_LOCK_INITIALIZED) { + if (nfs4_release_lockowner(lsp) == 0) + return; + } nfs4_free_lock_state(lsp); } -- cgit v1.2.3-70-g09d2 From 3114ea7a24d3264c090556a2444fc6d2c06176d4 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Wed, 7 Mar 2012 16:39:06 -0500 Subject: NFSv4: Return the delegation if the server returns NFS4ERR_OPENMODE If a setattr() fails because of an NFS4ERR_OPENMODE error, it is probably due to us holding a read delegation. Ensure that the recovery routines return that delegation in this case. Reported-by: Miklos Szeredi Signed-off-by: Trond Myklebust Cc: stable@vger.kernel.org --- fs/nfs/nfs4_fs.h | 1 + fs/nfs/nfs4proc.c | 13 ++++++++++++- 2 files changed, 13 insertions(+), 1 deletion(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 026878cb269..d1989e3f23c 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -182,6 +182,7 @@ struct nfs4_exception { long timeout; int retry; struct nfs4_state *state; + struct inode *inode; }; struct nfs4_state_recovery_ops { diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 32e0d08a977..a8dd04db764 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -262,18 +262,28 @@ static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struc { struct nfs_client *clp = server->nfs_client; struct nfs4_state *state = exception->state; + struct inode *inode = exception->inode; int ret = errorcode; exception->retry = 0; switch(errorcode) { case 0: return 0; + case -NFS4ERR_OPENMODE: + if (nfs_have_delegation(inode, FMODE_READ)) { + nfs_inode_return_delegation(inode); + exception->retry = 1; + return 0; + } + if (state == NULL) + break; + nfs4_schedule_stateid_recovery(server, state); + goto wait_on_recovery; case -NFS4ERR_DELEG_REVOKED: case -NFS4ERR_ADMIN_REVOKED: case -NFS4ERR_BAD_STATEID: if (state != NULL) nfs_remove_bad_delegation(state->inode); - case -NFS4ERR_OPENMODE: if (state == NULL) break; nfs4_schedule_stateid_recovery(server, state); @@ -1939,6 +1949,7 @@ static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, struct nfs_server *server = NFS_SERVER(inode); struct nfs4_exception exception = { .state = state, + .inode = inode, }; int err; do { -- cgit v1.2.3-70-g09d2 From 0032a7a749a49b2c044092a1d0af5cfd0077f35d Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Thu, 8 Mar 2012 17:16:12 -0500 Subject: NFS: Don't copy read delegation stateids in setattr The server will just return an NFS4ERR_OPENMODE anyway. Signed-off-by: Trond Myklebust --- fs/nfs/delegation.c | 16 ++++++++++------ fs/nfs/delegation.h | 2 +- fs/nfs/nfs4proc.c | 2 +- 3 files changed, 12 insertions(+), 8 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index 97d53574bf5..e27c0972f94 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -694,21 +694,25 @@ int nfs_delegations_present(struct nfs_client *clp) * nfs4_copy_delegation_stateid - Copy inode's state ID information * @dst: stateid data structure to fill in * @inode: inode to check + * @flags: delegation type requirement * - * Returns one and fills in "dst->data" * if inode had a delegation, - * otherwise zero is returned. + * Returns "true" and fills in "dst->data" * if inode had a delegation, + * otherwise "false" is returned. */ -int nfs4_copy_delegation_stateid(nfs4_stateid *dst, struct inode *inode) +bool nfs4_copy_delegation_stateid(nfs4_stateid *dst, struct inode *inode, + fmode_t flags) { struct nfs_inode *nfsi = NFS_I(inode); struct nfs_delegation *delegation; - int ret = 0; + bool ret; + flags &= FMODE_READ|FMODE_WRITE; rcu_read_lock(); delegation = rcu_dereference(nfsi->delegation); - if (delegation != NULL) { + ret = (delegation != NULL && (delegation->type & flags) == flags); + if (ret) { nfs4_stateid_copy(dst, &delegation->stateid); - ret = 1; + nfs_mark_delegation_referenced(delegation); } rcu_read_unlock(); return ret; diff --git a/fs/nfs/delegation.h b/fs/nfs/delegation.h index 691a7960918..e193012123e 100644 --- a/fs/nfs/delegation.h +++ b/fs/nfs/delegation.h @@ -54,7 +54,7 @@ void nfs_delegation_reap_unclaimed(struct nfs_client *clp); int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync); int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid); int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl); -int nfs4_copy_delegation_stateid(nfs4_stateid *dst, struct inode *inode); +bool nfs4_copy_delegation_stateid(nfs4_stateid *dst, struct inode *inode, fmode_t flags); void nfs_mark_delegation_referenced(struct nfs_delegation *delegation); int nfs_have_delegation(struct inode *inode, fmode_t flags); diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index a8dd04db764..3578ad36a5b 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -1929,7 +1929,7 @@ static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, nfs_fattr_init(fattr); - if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { + if (nfs4_copy_delegation_stateid(&arg.stateid, inode, FMODE_WRITE)) { /* Use that stateid */ } else if (state != NULL) { nfs4_select_rw_stateid(&arg.stateid, state, current->files, current->tgid); -- cgit v1.2.3-70-g09d2 From 4fc8796d23819da814ec25b7793bde8f104f1a2a Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Thu, 8 Mar 2012 17:42:01 -0500 Subject: NFSv4: Clean up nfs4_select_rw_stateid() Ensure that we select delegation stateids first, then lock stateids and then open stateids. Signed-off-by: Trond Myklebust --- fs/nfs/nfs4_fs.h | 3 ++- fs/nfs/nfs4proc.c | 8 +++++--- fs/nfs/nfs4state.c | 45 +++++++++++++++++++++++++++++++++------------ fs/nfs/nfs4xdr.c | 13 +++++++++---- 4 files changed, 49 insertions(+), 20 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index d1989e3f23c..b47bdb9c161 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -330,7 +330,8 @@ extern void nfs41_handle_server_scope(struct nfs_client *, struct server_scope **); extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp); extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl); -extern void nfs4_select_rw_stateid(nfs4_stateid *, struct nfs4_state *, fl_owner_t, pid_t); +extern void nfs4_select_rw_stateid(nfs4_stateid *, struct nfs4_state *, + fmode_t, fl_owner_t, pid_t); extern struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter, gfp_t gfp_mask); extern int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task); diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 3578ad36a5b..3bf5593741e 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -1929,10 +1929,12 @@ static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, nfs_fattr_init(fattr); - if (nfs4_copy_delegation_stateid(&arg.stateid, inode, FMODE_WRITE)) { + if (state != NULL) { + nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, + current->files, current->tgid); + } else if (nfs4_copy_delegation_stateid(&arg.stateid, inode, + FMODE_WRITE)) { /* Use that stateid */ - } else if (state != NULL) { - nfs4_select_rw_stateid(&arg.stateid, state, current->files, current->tgid); } else nfs4_stateid_copy(&arg.stateid, &zero_stateid); diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 7adc46b4c7f..de44804d986 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -886,28 +886,49 @@ int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl) return 0; } -/* - * Byte-range lock aware utility to initialize the stateid of read/write - * requests. - */ -void nfs4_select_rw_stateid(nfs4_stateid *dst, struct nfs4_state *state, fl_owner_t fl_owner, pid_t fl_pid) +static bool nfs4_copy_lock_stateid(nfs4_stateid *dst, struct nfs4_state *state, + fl_owner_t fl_owner, pid_t fl_pid) { struct nfs4_lock_state *lsp; - int seq; + bool ret = false; - do { - seq = read_seqbegin(&state->seqlock); - nfs4_stateid_copy(dst, &state->stateid); - } while (read_seqretry(&state->seqlock, seq)); if (test_bit(LK_STATE_IN_USE, &state->flags) == 0) - return; + goto out; spin_lock(&state->state_lock); lsp = __nfs4_find_lock_state(state, fl_owner, fl_pid, NFS4_ANY_LOCK_TYPE); - if (lsp != NULL && (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) + if (lsp != NULL && (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) { nfs4_stateid_copy(dst, &lsp->ls_stateid); + ret = true; + } spin_unlock(&state->state_lock); nfs4_put_lock_state(lsp); +out: + return ret; +} + +static void nfs4_copy_open_stateid(nfs4_stateid *dst, struct nfs4_state *state) +{ + int seq; + + do { + seq = read_seqbegin(&state->seqlock); + nfs4_stateid_copy(dst, &state->stateid); + } while (read_seqretry(&state->seqlock, seq)); +} + +/* + * Byte-range lock aware utility to initialize the stateid of read/write + * requests. + */ +void nfs4_select_rw_stateid(nfs4_stateid *dst, struct nfs4_state *state, + fmode_t fmode, fl_owner_t fl_owner, pid_t fl_pid) +{ + if (nfs4_copy_delegation_stateid(dst, state->inode, fmode)) + return; + if (nfs4_copy_lock_stateid(dst, state, fl_owner, fl_pid)) + return; + nfs4_copy_open_stateid(dst, state); } struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter, gfp_t gfp_mask) diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index e4bb8e6409a..f7e064d997f 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -1491,12 +1491,17 @@ 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_open_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx, const struct nfs_lock_context *l_ctx, int zero_seqid) +static void encode_open_stateid(struct xdr_stream *xdr, + const struct nfs_open_context *ctx, + const struct nfs_lock_context *l_ctx, + fmode_t fmode, + int zero_seqid) { nfs4_stateid stateid; if (ctx->state != NULL) { - nfs4_select_rw_stateid(&stateid, ctx->state, l_ctx->lockowner, l_ctx->pid); + nfs4_select_rw_stateid(&stateid, ctx->state, + fmode, l_ctx->lockowner, l_ctx->pid); if (zero_seqid) stateid.seqid = 0; encode_nfs4_stateid(xdr, &stateid); @@ -1510,7 +1515,7 @@ static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr); encode_open_stateid(xdr, args->context, args->lock_context, - hdr->minorversion); + FMODE_READ, hdr->minorversion); p = reserve_space(xdr, 12); p = xdr_encode_hyper(p, args->offset); @@ -1648,7 +1653,7 @@ static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *arg encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr); encode_open_stateid(xdr, args->context, args->lock_context, - hdr->minorversion); + FMODE_WRITE, hdr->minorversion); p = reserve_space(xdr, 16); p = xdr_encode_hyper(p, args->offset); -- cgit v1.2.3-70-g09d2 From 17280175c587469b34757263c7cfc608f0ea2334 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sun, 11 Mar 2012 13:11:00 -0400 Subject: NFS: Fix a number of sparse warnings Fix a number of "warning: symbol 'foo' was not declared. Should it be static?" conditions. Fix 2 cases of "warning: Using plain integer as NULL pointer" fs/nfs/delegation.c:263:31: warning: restricted fmode_t degrades to integer - We want to allow upgrades to a WRITE delegation, but should otherwise consider servers that hand out duplicate delegations to be borken. Signed-off-by: Trond Myklebust --- fs/nfs/callback.c | 4 ++-- fs/nfs/client.c | 5 ++--- fs/nfs/delegation.c | 5 ++++- fs/nfs/dns_resolve.c | 1 + fs/nfs/idmap.c | 8 ++++---- fs/nfs/nfs3acl.c | 2 +- fs/nfs/nfs4filelayout.c | 10 +++++----- fs/nfs/nfs4filelayoutdev.c | 4 ++-- fs/nfs/nfs4proc.c | 23 ++++++++++++----------- fs/nfs/nfs4state.c | 3 ++- fs/nfs/objlayout/objlayout.c | 2 +- fs/nfs/pnfs_dev.c | 2 +- fs/nfs/unlink.c | 2 +- 13 files changed, 38 insertions(+), 33 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c index 2afe23349c7..eb95f5091c1 100644 --- a/fs/nfs/callback.c +++ b/fs/nfs/callback.c @@ -101,7 +101,7 @@ nfs4_callback_svc(void *vrqstp) /* * Prepare to bring up the NFSv4 callback service */ -struct svc_rqst * +static struct svc_rqst * nfs4_callback_up(struct svc_serv *serv, struct rpc_xprt *xprt) { int ret; @@ -172,7 +172,7 @@ nfs41_callback_svc(void *vrqstp) /* * Bring up the NFSv4.1 callback service */ -struct svc_rqst * +static struct svc_rqst * nfs41_callback_up(struct svc_serv *serv, struct rpc_xprt *xprt) { struct svc_rqst *rqstp; diff --git a/fs/nfs/client.c b/fs/nfs/client.c index d30dcbfb6b2..f1f047c376d 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -443,9 +443,8 @@ static int nfs_sockaddr_cmp(const struct sockaddr *sa1, } /* Common match routine for v4.0 and v4.1 callback services */ -bool -nfs4_cb_match_client(const struct sockaddr *addr, struct nfs_client *clp, - u32 minorversion) +static bool nfs4_cb_match_client(const struct sockaddr *addr, + struct nfs_client *clp, u32 minorversion) { struct sockaddr *clap = (struct sockaddr *)&clp->cl_addr; diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index 12de88353ee..89af1d26927 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -256,11 +256,14 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct /* * Deal with broken servers that hand out two * delegations for the same file. + * Allow for upgrades to a WRITE delegation, but + * nothing else. */ dfprintk(FILE, "%s: server %s handed out " "a duplicate delegation!\n", __func__, clp->cl_hostname); - if (delegation->type <= old_delegation->type) { + if (delegation->type == old_delegation->type || + !(delegation->type & FMODE_WRITE)) { freeme = delegation; delegation = NULL; goto out; diff --git a/fs/nfs/dns_resolve.c b/fs/nfs/dns_resolve.c index fcd8f1d7430..b3924b8a600 100644 --- a/fs/nfs/dns_resolve.c +++ b/fs/nfs/dns_resolve.c @@ -10,6 +10,7 @@ #include #include +#include "dns_resolve.h" ssize_t nfs_dns_resolve_name(struct net *net, char *name, size_t namelen, struct sockaddr *sa, size_t salen) diff --git a/fs/nfs/idmap.c b/fs/nfs/idmap.c index f72c1fc074e..f9f89fc83ee 100644 --- a/fs/nfs/idmap.c +++ b/fs/nfs/idmap.c @@ -54,8 +54,8 @@ /* Default cache timeout is 10 minutes */ unsigned int nfs_idmap_cache_timeout = 600; -const struct cred *id_resolver_cache; -struct key_type key_type_id_resolver_legacy; +static const struct cred *id_resolver_cache; +static struct key_type key_type_id_resolver_legacy; /** @@ -160,7 +160,7 @@ static int nfs_map_numeric_to_string(__u32 id, char *buf, size_t buflen) return snprintf(buf, buflen, "%u", id); } -struct key_type key_type_id_resolver = { +static struct key_type key_type_id_resolver = { .name = "id_resolver", .instantiate = user_instantiate, .match = user_match, @@ -381,7 +381,7 @@ static const struct rpc_pipe_ops idmap_upcall_ops = { .destroy_msg = idmap_pipe_destroy_msg, }; -struct key_type key_type_id_resolver_legacy = { +static struct key_type key_type_id_resolver_legacy = { .name = "id_resolver", .instantiate = user_instantiate, .match = user_match, diff --git a/fs/nfs/nfs3acl.c b/fs/nfs/nfs3acl.c index 7ef23979896..e4498dc351a 100644 --- a/fs/nfs/nfs3acl.c +++ b/fs/nfs/nfs3acl.c @@ -192,7 +192,7 @@ struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type) .pages = pages, }; struct nfs3_getaclres res = { - 0 + NULL, }; struct rpc_message msg = { .rpc_argp = &args, diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c index 716fac6bc08..379a085f8f2 100644 --- a/fs/nfs/nfs4filelayout.c +++ b/fs/nfs/nfs4filelayout.c @@ -323,21 +323,21 @@ static void filelayout_commit_release(void *data) nfs_commitdata_release(wdata); } -struct rpc_call_ops filelayout_read_call_ops = { +static const struct rpc_call_ops filelayout_read_call_ops = { .rpc_call_prepare = filelayout_read_prepare, .rpc_call_done = filelayout_read_call_done, .rpc_count_stats = filelayout_read_count_stats, .rpc_release = filelayout_read_release, }; -struct rpc_call_ops filelayout_write_call_ops = { +static const struct rpc_call_ops filelayout_write_call_ops = { .rpc_call_prepare = filelayout_write_prepare, .rpc_call_done = filelayout_write_call_done, .rpc_count_stats = filelayout_write_count_stats, .rpc_release = filelayout_write_release, }; -struct rpc_call_ops filelayout_commit_call_ops = { +static const struct rpc_call_ops filelayout_commit_call_ops = { .rpc_call_prepare = filelayout_write_prepare, .rpc_call_done = filelayout_write_call_done, .rpc_count_stats = filelayout_write_count_stats, @@ -723,7 +723,7 @@ filelayout_pg_test(struct nfs_pageio_descriptor *pgio, struct nfs_page *prev, return (p_stripe == r_stripe); } -void +static void filelayout_pg_init_read(struct nfs_pageio_descriptor *pgio, struct nfs_page *req) { @@ -740,7 +740,7 @@ filelayout_pg_init_read(struct nfs_pageio_descriptor *pgio, nfs_pageio_reset_read_mds(pgio); } -void +static void filelayout_pg_init_write(struct nfs_pageio_descriptor *pgio, struct nfs_page *req) { diff --git a/fs/nfs/nfs4filelayoutdev.c b/fs/nfs/nfs4filelayoutdev.c index 41677f0bf79..a866bbd2890 100644 --- a/fs/nfs/nfs4filelayoutdev.c +++ b/fs/nfs/nfs4filelayoutdev.c @@ -45,7 +45,7 @@ * - incremented when a device id maps a data server already in the cache. * - decremented when deviceid is removed from the cache. */ -DEFINE_SPINLOCK(nfs4_ds_cache_lock); +static DEFINE_SPINLOCK(nfs4_ds_cache_lock); static LIST_HEAD(nfs4_data_server_cache); /* Debug routines */ @@ -108,7 +108,7 @@ same_sockaddr(struct sockaddr *addr1, struct sockaddr *addr2) return false; } -bool +static bool _same_data_server_addrs_locked(const struct list_head *dsaddrs1, const struct list_head *dsaddrs2) { diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 3bf5593741e..36a7cda0344 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -677,12 +677,12 @@ static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) nfs41_sequence_done(task, data->seq_res); } -struct rpc_call_ops nfs41_call_sync_ops = { +static const struct rpc_call_ops nfs41_call_sync_ops = { .rpc_call_prepare = nfs41_call_sync_prepare, .rpc_call_done = nfs41_call_sync_done, }; -struct rpc_call_ops nfs41_call_priv_sync_ops = { +static const struct rpc_call_ops nfs41_call_priv_sync_ops = { .rpc_call_prepare = nfs41_call_priv_sync_prepare, .rpc_call_done = nfs41_call_sync_done, }; @@ -4770,7 +4770,7 @@ static void nfs4_release_lockowner_release(void *calldata) kfree(calldata); } -const struct rpc_call_ops nfs4_release_lockowner_ops = { +static const struct rpc_call_ops nfs4_release_lockowner_ops = { .rpc_release = nfs4_release_lockowner_release, }; @@ -4910,7 +4910,8 @@ static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct return status; } -int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) +static int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, + struct nfs4_secinfo_flavors *flavors) { struct nfs4_exception exception = { }; int err; @@ -5096,7 +5097,7 @@ static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) dprintk("<-- %s\n", __func__); } -struct rpc_call_ops nfs4_get_lease_time_ops = { +static const struct rpc_call_ops nfs4_get_lease_time_ops = { .rpc_call_prepare = nfs4_get_lease_time_prepare, .rpc_call_done = nfs4_get_lease_time_done, }; @@ -6319,7 +6320,7 @@ static bool nfs4_match_stateid(const nfs4_stateid *s1, } -struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { +static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, .recover_open = nfs4_open_reclaim, @@ -6329,7 +6330,7 @@ struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { }; #if defined(CONFIG_NFS_V4_1) -struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { +static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, .recover_open = nfs4_open_reclaim, @@ -6340,7 +6341,7 @@ struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { }; #endif /* CONFIG_NFS_V4_1 */ -struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { +static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, .recover_open = nfs4_open_expired, @@ -6350,7 +6351,7 @@ struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { }; #if defined(CONFIG_NFS_V4_1) -struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { +static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, .recover_open = nfs41_open_expired, @@ -6360,14 +6361,14 @@ struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { }; #endif /* CONFIG_NFS_V4_1 */ -struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { +static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { .sched_state_renewal = nfs4_proc_async_renew, .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, .renew_lease = nfs4_proc_renew, }; #if defined(CONFIG_NFS_V4_1) -struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { +static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { .sched_state_renewal = nfs41_proc_async_sequence, .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, .renew_lease = nfs4_proc_sequence, diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 5fa43cd9bfc..7c586070d02 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -876,7 +876,8 @@ int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl) if (fl->fl_flags & FL_POSIX) lsp = nfs4_get_lock_state(state, fl->fl_owner, 0, NFS4_POSIX_LOCK_TYPE); else if (fl->fl_flags & FL_FLOCK) - lsp = nfs4_get_lock_state(state, 0, fl->fl_pid, NFS4_FLOCK_LOCK_TYPE); + lsp = nfs4_get_lock_state(state, NULL, fl->fl_pid, + NFS4_FLOCK_LOCK_TYPE); else return -EINVAL; if (lsp == NULL) diff --git a/fs/nfs/objlayout/objlayout.c b/fs/nfs/objlayout/objlayout.c index 2bd185277ad..157c47e277e 100644 --- a/fs/nfs/objlayout/objlayout.c +++ b/fs/nfs/objlayout/objlayout.c @@ -156,7 +156,7 @@ last_byte_offset(u64 start, u64 len) return end > start ? end - 1 : NFS4_MAX_UINT64; } -void _fix_verify_io_params(struct pnfs_layout_segment *lseg, +static void _fix_verify_io_params(struct pnfs_layout_segment *lseg, struct page ***p_pages, unsigned *p_pgbase, u64 offset, unsigned long count) { diff --git a/fs/nfs/pnfs_dev.c b/fs/nfs/pnfs_dev.c index 4f359d2a26e..6b4cd384930 100644 --- a/fs/nfs/pnfs_dev.c +++ b/fs/nfs/pnfs_dev.c @@ -92,7 +92,7 @@ _lookup_deviceid(const struct pnfs_layoutdriver_type *ld, * @clp nfs_client associated with deviceid * @id deviceid to look up */ -struct nfs4_deviceid_node * +static struct nfs4_deviceid_node * _find_get_deviceid(const struct pnfs_layoutdriver_type *ld, const struct nfs_client *clp, const struct nfs4_deviceid *id, long hash) diff --git a/fs/nfs/unlink.c b/fs/nfs/unlink.c index 490613b709b..fae71c9f505 100644 --- a/fs/nfs/unlink.c +++ b/fs/nfs/unlink.c @@ -108,7 +108,7 @@ static void nfs_async_unlink_release(void *calldata) } #if defined(CONFIG_NFS_V4_1) -void nfs_unlink_prepare(struct rpc_task *task, void *calldata) +static void nfs_unlink_prepare(struct rpc_task *task, void *calldata) { struct nfs_unlinkdata *data = calldata; struct nfs_server *server = NFS_SERVER(data->dir); -- cgit v1.2.3-70-g09d2 From 9a3ba432330e504ac61ff0043dbdaba7cea0e35a Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 12 Mar 2012 18:01:48 -0400 Subject: NFSv4: Rate limit the state manager warning messages Prevent the state manager from filling up system logs when recovery fails on the server. Signed-off-by: Trond Myklebust Cc: stable@vger.kernel.org --- fs/nfs/callback_xdr.c | 4 +++- fs/nfs/nfs4proc.c | 2 +- fs/nfs/nfs4state.c | 4 ++-- 3 files changed, 6 insertions(+), 4 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c index fd6cfdb917d..95bfc243992 100644 --- a/fs/nfs/callback_xdr.c +++ b/fs/nfs/callback_xdr.c @@ -9,6 +9,8 @@ #include #include #include +#include +#include #include #include #include "nfs4_fs.h" @@ -167,7 +169,7 @@ static __be32 decode_compound_hdr_arg(struct xdr_stream *xdr, struct cb_compound if (hdr->minorversion <= 1) { hdr->cb_ident = ntohl(*p++); /* ignored by v4.1 */ } else { - printk(KERN_WARNING "NFS: %s: NFSv4 server callback with " + pr_warn_ratelimited("NFS: %s: NFSv4 server callback with " "illegal minor version %u!\n", __func__, hdr->minorversion); return htonl(NFS4ERR_MINOR_VERS_MISMATCH); diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 36a7cda0344..5e0961acfef 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -1876,7 +1876,7 @@ static struct nfs4_state *nfs4_do_open(struct inode *dir, struct dentry *dentry, * the user though... */ if (status == -NFS4ERR_BAD_SEQID) { - printk(KERN_WARNING "NFS: v4 server %s " + pr_warn_ratelimited("NFS: v4 server %s " " returned a bad sequence-id error!\n", NFS_SERVER(dir)->nfs_client->cl_hostname); exception.retry = 1; diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 7c586070d02..cb708b20a77 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -984,7 +984,7 @@ static void nfs_increment_seqid(int status, struct nfs_seqid *seqid) case -NFS4ERR_BAD_SEQID: if (seqid->sequence->flags & NFS_SEQID_CONFIRMED) return; - printk(KERN_WARNING "NFS: v4 server returned a bad" + pr_warn_ratelimited("NFS: v4 server returned a bad" " sequence-id error on an" " unconfirmed sequence %p!\n", seqid->sequence); @@ -1840,7 +1840,7 @@ static void nfs4_state_manager(struct nfs_client *clp) } while (atomic_read(&clp->cl_count) > 1); return; out_error: - printk(KERN_WARNING "NFS: state manager failed on NFSv4 server %s" + pr_warn_ratelimited("NFS: state manager failed on NFSv4 server %s" " with error %d\n", clp->cl_hostname, -status); nfs4_end_drain_session(clp); nfs4_clear_state_manager_bit(clp); -- cgit v1.2.3-70-g09d2 From 5ae67c4fee869c9b3c87b727a9ea511b6326b834 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 19 Mar 2012 16:17:18 -0400 Subject: NFSv4: It is not safe to dereference lsp->ls_state in release_lockowner It is quite possible for the release_lockowner RPC call to race with the close RPC call, in which case, we cannot dereference lsp->ls_state in order to find the nfs_server. Signed-off-by: Trond Myklebust --- fs/nfs/nfs4_fs.h | 2 +- fs/nfs/nfs4proc.c | 4 +++- fs/nfs/nfs4state.c | 8 +++----- 3 files changed, 7 insertions(+), 7 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index b47bdb9c161..97ecc863dd7 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -340,7 +340,7 @@ extern void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid); extern void nfs_release_seqid(struct nfs_seqid *seqid); extern void nfs_free_seqid(struct nfs_seqid *seqid); -extern void nfs4_free_lock_state(struct nfs4_lock_state *lsp); +extern void nfs4_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp); extern const nfs4_stateid zero_stateid; diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 5e0961acfef..d41d97fb4cb 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -4760,13 +4760,14 @@ out: struct nfs_release_lockowner_data { struct nfs4_lock_state *lsp; + struct nfs_server *server; struct nfs_release_lockowner_args args; }; static void nfs4_release_lockowner_release(void *calldata) { struct nfs_release_lockowner_data *data = calldata; - nfs4_free_lock_state(data->lsp); + nfs4_free_lock_state(data->server, data->lsp); kfree(calldata); } @@ -4788,6 +4789,7 @@ int nfs4_release_lockowner(struct nfs4_lock_state *lsp) if (!data) return -ENOMEM; data->lsp = lsp; + data->server = server; data->args.lock_owner.clientid = server->nfs_client->cl_clientid; data->args.lock_owner.id = lsp->ls_seqid.owner_id; data->args.lock_owner.s_dev = server->s_dev; diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 12b068f2ec9..0f43414eb25 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -791,10 +791,8 @@ out_free: return NULL; } -void nfs4_free_lock_state(struct nfs4_lock_state *lsp) +void nfs4_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp) { - struct nfs_server *server = lsp->ls_state->owner->so_server; - ida_simple_remove(&server->lockowner_id, lsp->ls_seqid.owner_id); nfs4_destroy_seqid_counter(&lsp->ls_seqid); kfree(lsp); @@ -828,7 +826,7 @@ static struct nfs4_lock_state *nfs4_get_lock_state(struct nfs4_state *state, fl_ } spin_unlock(&state->state_lock); if (new != NULL) - nfs4_free_lock_state(new); + nfs4_free_lock_state(state->owner->so_server, new); return lsp; } @@ -853,7 +851,7 @@ void nfs4_put_lock_state(struct nfs4_lock_state *lsp) if (nfs4_release_lockowner(lsp) == 0) return; } - nfs4_free_lock_state(lsp); + nfs4_free_lock_state(lsp->ls_state->owner->so_server, lsp); } static void nfs4_fl_copy_lock(struct file_lock *dst, struct file_lock *src) -- cgit v1.2.3-70-g09d2 From c6cb80d00be42f30716ec817b963bcec094433b5 Mon Sep 17 00:00:00 2001 From: Bryan Schumaker Date: Mon, 19 Mar 2012 14:54:39 -0400 Subject: NFS: Remove nfs4_setup_sequence from generic write code This is an NFS v4 specific operation, so it belongs in the NFS v4 code and not the generic client. Signed-off-by: Bryan Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/direct.c | 4 ---- fs/nfs/nfs3proc.c | 6 ++++++ fs/nfs/nfs4proc.c | 11 +++++++++++ fs/nfs/proc.c | 6 ++++++ fs/nfs/write.c | 15 +-------------- include/linux/nfs_xdr.h | 1 + 6 files changed, 25 insertions(+), 18 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index 1940f1a56a5..c4bdaf15289 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -554,9 +554,7 @@ static void nfs_direct_commit_release(void *calldata) } static const struct rpc_call_ops nfs_commit_direct_ops = { -#if defined(CONFIG_NFS_V4_1) .rpc_call_prepare = nfs_write_prepare, -#endif /* CONFIG_NFS_V4_1 */ .rpc_call_done = nfs_direct_commit_result, .rpc_release = nfs_direct_commit_release, }; @@ -696,9 +694,7 @@ out_unlock: } static const struct rpc_call_ops nfs_write_direct_ops = { -#if defined(CONFIG_NFS_V4_1) .rpc_call_prepare = nfs_write_prepare, -#endif /* CONFIG_NFS_V4_1 */ .rpc_call_done = nfs_direct_write_result, .rpc_release = nfs_direct_write_release, }; diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c index 91943953a37..3bcf722800f 100644 --- a/fs/nfs/nfs3proc.c +++ b/fs/nfs/nfs3proc.c @@ -828,6 +828,11 @@ static void nfs3_proc_write_setup(struct nfs_write_data *data, struct rpc_messag msg->rpc_proc = &nfs3_procedures[NFS3PROC_WRITE]; } +static void nfs3_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) +{ + rpc_call_start(task); +} + static int nfs3_commit_done(struct rpc_task *task, struct nfs_write_data *data) { if (nfs3_async_handle_jukebox(task, data->inode)) @@ -881,6 +886,7 @@ const struct nfs_rpc_ops nfs_v3_clientops = { .read_setup = nfs3_proc_read_setup, .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_done = nfs3_commit_done, diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index d41d97fb4cb..dc910691acc 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -3373,6 +3373,16 @@ static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_messag nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); } +static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) +{ + if (nfs4_setup_sequence(NFS_SERVER(data->inode), + &data->args.seq_args, + &data->res.seq_res, + task)) + return; + rpc_call_start(task); +} + static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_write_data *data) { struct inode *inode = data->inode; @@ -6449,6 +6459,7 @@ const struct nfs_rpc_ops nfs_v4_clientops = { .read_setup = nfs4_proc_read_setup, .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_done = nfs4_commit_done, diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c index 0c672588fe5..8069b41e7f2 100644 --- a/fs/nfs/proc.c +++ b/fs/nfs/proc.c @@ -668,6 +668,11 @@ static void nfs_proc_write_setup(struct nfs_write_data *data, struct rpc_message msg->rpc_proc = &nfs_procedures[NFSPROC_WRITE]; } +static void nfs_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) +{ + rpc_call_start(task); +} + static void nfs_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) { @@ -738,6 +743,7 @@ const struct nfs_rpc_ops nfs_v2_clientops = { .read_setup = nfs_proc_read_setup, .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, .lock = nfs_proc_lock, diff --git a/fs/nfs/write.c b/fs/nfs/write.c index bd93d40099f..2c68818f68a 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -1172,23 +1172,14 @@ out: nfs_writedata_release(calldata); } -#if defined(CONFIG_NFS_V4_1) void nfs_write_prepare(struct rpc_task *task, void *calldata) { struct nfs_write_data *data = calldata; - - if (nfs4_setup_sequence(NFS_SERVER(data->inode), - &data->args.seq_args, - &data->res.seq_res, task)) - return; - rpc_call_start(task); + NFS_PROTO(data->inode)->write_rpc_prepare(task, data); } -#endif /* CONFIG_NFS_V4_1 */ static const struct rpc_call_ops nfs_write_partial_ops = { -#if defined(CONFIG_NFS_V4_1) .rpc_call_prepare = nfs_write_prepare, -#endif /* CONFIG_NFS_V4_1 */ .rpc_call_done = nfs_writeback_done_partial, .rpc_release = nfs_writeback_release_partial, }; @@ -1250,9 +1241,7 @@ remove_request: } static const struct rpc_call_ops nfs_write_full_ops = { -#if defined(CONFIG_NFS_V4_1) .rpc_call_prepare = nfs_write_prepare, -#endif /* CONFIG_NFS_V4_1 */ .rpc_call_done = nfs_writeback_done_full, .rpc_release = nfs_writeback_release_full, }; @@ -1544,9 +1533,7 @@ static void nfs_commit_release(void *calldata) } static const struct rpc_call_ops nfs_commit_ops = { -#if defined(CONFIG_NFS_V4_1) .rpc_call_prepare = nfs_write_prepare, -#endif /* CONFIG_NFS_V4_1 */ .rpc_call_done = nfs_commit_done, .rpc_release = nfs_commit_release, }; diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index c1cf86cceee..b02a5f9eb21 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1246,6 +1246,7 @@ struct nfs_rpc_ops { void (*read_setup) (struct nfs_read_data *, struct rpc_message *); int (*read_done) (struct rpc_task *, struct nfs_read_data *); void (*write_setup) (struct nfs_write_data *, struct rpc_message *); + void (*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_write_data *, struct rpc_message *); int (*commit_done) (struct rpc_task *, struct nfs_write_data *); -- cgit v1.2.3-70-g09d2 From ea7c330362257c072791aeaf03bae2cebf9fb984 Mon Sep 17 00:00:00 2001 From: Bryan Schumaker Date: Mon, 19 Mar 2012 14:54:40 -0400 Subject: NFS: Remove nfs4_setup_sequence from generic read code This is an NFS v4 specific operation, so it belongs in the NFS v4 code and not the generic client. Signed-off-by: Bryan Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/direct.c | 2 -- fs/nfs/nfs3proc.c | 6 ++++++ fs/nfs/nfs4proc.c | 11 +++++++++++ fs/nfs/proc.c | 6 ++++++ fs/nfs/read.c | 13 +------------ include/linux/nfs_xdr.h | 1 + 6 files changed, 25 insertions(+), 14 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index c4bdaf15289..9c7f66ac6cc 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -265,9 +265,7 @@ static void nfs_direct_read_release(void *calldata) } static const struct rpc_call_ops nfs_read_direct_ops = { -#if defined(CONFIG_NFS_V4_1) .rpc_call_prepare = nfs_read_prepare, -#endif /* CONFIG_NFS_V4_1 */ .rpc_call_done = nfs_direct_read_result, .rpc_release = nfs_direct_read_release, }; diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c index 3bcf722800f..9d9b239329d 100644 --- a/fs/nfs/nfs3proc.c +++ b/fs/nfs/nfs3proc.c @@ -814,6 +814,11 @@ static void nfs3_proc_read_setup(struct nfs_read_data *data, struct rpc_message msg->rpc_proc = &nfs3_procedures[NFS3PROC_READ]; } +static void nfs3_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) +{ + rpc_call_start(task); +} + static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data) { if (nfs3_async_handle_jukebox(task, data->inode)) @@ -884,6 +889,7 @@ const struct nfs_rpc_ops nfs_v3_clientops = { .pathconf = nfs3_proc_pathconf, .decode_dirent = nfs3_decode_dirent, .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, diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index dc910691acc..915385fcf53 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -3299,6 +3299,16 @@ static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); } +static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) +{ + if (nfs4_setup_sequence(NFS_SERVER(data->inode), + &data->args.seq_args, + &data->res.seq_res, + task)) + return; + rpc_call_start(task); +} + /* Reset the the nfs_read_data to send the read to the MDS. */ void nfs4_reset_read(struct rpc_task *task, struct nfs_read_data *data) { @@ -6457,6 +6467,7 @@ const struct nfs_rpc_ops nfs_v4_clientops = { .set_capabilities = nfs4_server_capabilities, .decode_dirent = nfs4_decode_dirent, .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, diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c index 8069b41e7f2..a8df70742d0 100644 --- a/fs/nfs/proc.c +++ b/fs/nfs/proc.c @@ -651,6 +651,11 @@ static void nfs_proc_read_setup(struct nfs_read_data *data, struct rpc_message * msg->rpc_proc = &nfs_procedures[NFSPROC_READ]; } +static void nfs_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) +{ + rpc_call_start(task); +} + static int nfs_write_done(struct rpc_task *task, struct nfs_write_data *data) { if (nfs_async_handle_expired_key(task)) @@ -741,6 +746,7 @@ const struct nfs_rpc_ops nfs_v2_clientops = { .pathconf = nfs_proc_pathconf, .decode_dirent = nfs2_decode_dirent, .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, diff --git a/fs/nfs/read.c b/fs/nfs/read.c index 2662c0298dd..cc1f758a7ee 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -464,23 +464,14 @@ static void nfs_readpage_release_partial(void *calldata) nfs_readdata_release(calldata); } -#if defined(CONFIG_NFS_V4_1) void nfs_read_prepare(struct rpc_task *task, void *calldata) { struct nfs_read_data *data = calldata; - - if (nfs4_setup_sequence(NFS_SERVER(data->inode), - &data->args.seq_args, &data->res.seq_res, - task)) - return; - rpc_call_start(task); + NFS_PROTO(data->inode)->read_rpc_prepare(task, data); } -#endif /* CONFIG_NFS_V4_1 */ static const struct rpc_call_ops nfs_read_partial_ops = { -#if defined(CONFIG_NFS_V4_1) .rpc_call_prepare = nfs_read_prepare, -#endif /* CONFIG_NFS_V4_1 */ .rpc_call_done = nfs_readpage_result_partial, .rpc_release = nfs_readpage_release_partial, }; @@ -544,9 +535,7 @@ static void nfs_readpage_release_full(void *calldata) } static const struct rpc_call_ops nfs_read_full_ops = { -#if defined(CONFIG_NFS_V4_1) .rpc_call_prepare = nfs_read_prepare, -#endif /* CONFIG_NFS_V4_1 */ .rpc_call_done = nfs_readpage_result_full, .rpc_release = nfs_readpage_release_full, }; diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index b02a5f9eb21..286d74dde05 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1244,6 +1244,7 @@ struct nfs_rpc_ops { 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 *); + void (*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_rpc_prepare)(struct rpc_task *, struct nfs_write_data *); -- cgit v1.2.3-70-g09d2 From 34e137cc7e3b63c254875e59cd48dcbe6757fe6c Mon Sep 17 00:00:00 2001 From: Bryan Schumaker Date: Mon, 19 Mar 2012 14:54:41 -0400 Subject: NFS: Remove nfs4_setup_sequence from generic unlink code This is an NFS v4 specific operation, so it belongs in the NFS v4 code and not the generic client. Signed-off-by: Bryan Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/nfs3proc.c | 6 ++++++ fs/nfs/nfs4proc.c | 11 +++++++++++ fs/nfs/proc.c | 6 ++++++ fs/nfs/unlink.c | 20 +------------------- include/linux/nfs_xdr.h | 10 ++++++++++ 5 files changed, 34 insertions(+), 19 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c index 9d9b239329d..7f3f957f677 100644 --- a/fs/nfs/nfs3proc.c +++ b/fs/nfs/nfs3proc.c @@ -428,6 +428,11 @@ nfs3_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE]; } +static void nfs3_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) +{ + rpc_call_start(task); +} + static int nfs3_proc_unlink_done(struct rpc_task *task, struct inode *dir) { @@ -874,6 +879,7 @@ const struct nfs_rpc_ops nfs_v3_clientops = { .create = nfs3_proc_create, .remove = nfs3_proc_remove, .unlink_setup = nfs3_proc_unlink_setup, + .unlink_rpc_prepare = nfs3_proc_unlink_rpc_prepare, .unlink_done = nfs3_proc_unlink_done, .rename = nfs3_proc_rename, .rename_setup = nfs3_proc_rename_setup, diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 915385fcf53..9c247fa7915 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2779,6 +2779,16 @@ static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); } +static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) +{ + if (nfs4_setup_sequence(NFS_SERVER(data->dir), + &data->args.seq_args, + &data->res.seq_res, + task)) + return; + rpc_call_start(task); +} + static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) { struct nfs_removeres *res = task->tk_msg.rpc_resp; @@ -6451,6 +6461,7 @@ const struct nfs_rpc_ops nfs_v4_clientops = { .create = nfs4_proc_create, .remove = nfs4_proc_remove, .unlink_setup = nfs4_proc_unlink_setup, + .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, .unlink_done = nfs4_proc_unlink_done, .rename = nfs4_proc_rename, .rename_setup = nfs4_proc_rename_setup, diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c index a8df70742d0..528b9a2fae0 100644 --- a/fs/nfs/proc.c +++ b/fs/nfs/proc.c @@ -358,6 +358,11 @@ nfs_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) msg->rpc_proc = &nfs_procedures[NFSPROC_REMOVE]; } +static void nfs_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) +{ + rpc_call_start(task); +} + static int nfs_proc_unlink_done(struct rpc_task *task, struct inode *dir) { if (nfs_async_handle_expired_key(task)) @@ -731,6 +736,7 @@ const struct nfs_rpc_ops nfs_v2_clientops = { .create = nfs_proc_create, .remove = nfs_proc_remove, .unlink_setup = nfs_proc_unlink_setup, + .unlink_rpc_prepare = nfs_proc_unlink_rpc_prepare, .unlink_done = nfs_proc_unlink_done, .rename = nfs_proc_rename, .rename_setup = nfs_proc_rename_setup, diff --git a/fs/nfs/unlink.c b/fs/nfs/unlink.c index fae71c9f505..9c5a7980e24 100644 --- a/fs/nfs/unlink.c +++ b/fs/nfs/unlink.c @@ -20,15 +20,6 @@ #include "iostat.h" #include "delegation.h" -struct nfs_unlinkdata { - struct hlist_node list; - struct nfs_removeargs args; - struct nfs_removeres res; - struct inode *dir; - struct rpc_cred *cred; - struct nfs_fattr dir_attr; -}; - /** * nfs_free_unlinkdata - release data from a sillydelete operation. * @data: pointer to unlink structure. @@ -107,25 +98,16 @@ static void nfs_async_unlink_release(void *calldata) nfs_sb_deactive(sb); } -#if defined(CONFIG_NFS_V4_1) static void nfs_unlink_prepare(struct rpc_task *task, void *calldata) { struct nfs_unlinkdata *data = calldata; - struct nfs_server *server = NFS_SERVER(data->dir); - - if (nfs4_setup_sequence(server, &data->args.seq_args, - &data->res.seq_res, task)) - return; - rpc_call_start(task); + NFS_PROTO(data->dir)->unlink_rpc_prepare(task, data); } -#endif /* CONFIG_NFS_V4_1 */ static const struct rpc_call_ops nfs_unlink_ops = { .rpc_call_done = nfs_async_unlink_done, .rpc_release = nfs_async_unlink_release, -#if defined(CONFIG_NFS_V4_1) .rpc_call_prepare = nfs_unlink_prepare, -#endif /* CONFIG_NFS_V4_1 */ }; static int nfs_do_call_unlink(struct dentry *parent, struct inode *dir, struct nfs_unlinkdata *data) diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 286d74dde05..8d93e688188 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1192,6 +1192,15 @@ struct nfs_write_data { struct page *page_array[NFS_PAGEVEC_SIZE]; }; +struct nfs_unlinkdata { + struct hlist_node list; + struct nfs_removeargs args; + struct nfs_removeres res; + struct inode *dir; + struct rpc_cred *cred; + struct nfs_fattr dir_attr; +}; + struct nfs_access_entry; struct nfs_client; struct rpc_timeout; @@ -1221,6 +1230,7 @@ struct nfs_rpc_ops { struct iattr *, int, struct nfs_open_context *); int (*remove) (struct inode *, struct qstr *); void (*unlink_setup) (struct rpc_message *, struct inode *dir); + void (*unlink_rpc_prepare) (struct rpc_task *, struct nfs_unlinkdata *); int (*unlink_done) (struct rpc_task *, struct inode *); int (*rename) (struct inode *, struct qstr *, struct inode *, struct qstr *); -- cgit v1.2.3-70-g09d2 From c6bfa1a16377b42496ecc0490a33516c0e414e7b Mon Sep 17 00:00:00 2001 From: Bryan Schumaker Date: Mon, 19 Mar 2012 14:54:42 -0400 Subject: NFS: Remove nfs4_setup_sequence from generic rename code This is an NFS v4 specific operation, so it belongs in the NFS v4 code and not the generic client. Signed-off-by: Bryan Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/nfs3proc.c | 6 ++++++ fs/nfs/nfs4proc.c | 11 +++++++++++ fs/nfs/proc.c | 6 ++++++ fs/nfs/unlink.c | 23 +---------------------- include/linux/nfs_xdr.h | 13 +++++++++++++ 5 files changed, 37 insertions(+), 22 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c index 7f3f957f677..5242eae6711 100644 --- a/fs/nfs/nfs3proc.c +++ b/fs/nfs/nfs3proc.c @@ -450,6 +450,11 @@ nfs3_proc_rename_setup(struct rpc_message *msg, struct inode *dir) msg->rpc_proc = &nfs3_procedures[NFS3PROC_RENAME]; } +static void nfs3_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) +{ + rpc_call_start(task); +} + static int nfs3_proc_rename_done(struct rpc_task *task, struct inode *old_dir, struct inode *new_dir) @@ -883,6 +888,7 @@ const struct nfs_rpc_ops nfs_v3_clientops = { .unlink_done = nfs3_proc_unlink_done, .rename = nfs3_proc_rename, .rename_setup = nfs3_proc_rename_setup, + .rename_rpc_prepare = nfs3_proc_rename_rpc_prepare, .rename_done = nfs3_proc_rename_done, .link = nfs3_proc_link, .symlink = nfs3_proc_symlink, diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 9c247fa7915..b76dd0efae7 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2814,6 +2814,16 @@ static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); } +static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) +{ + if (nfs4_setup_sequence(NFS_SERVER(data->old_dir), + &data->args.seq_args, + &data->res.seq_res, + task)) + return; + rpc_call_start(task); +} + static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, struct inode *new_dir) { @@ -6465,6 +6475,7 @@ const struct nfs_rpc_ops nfs_v4_clientops = { .unlink_done = nfs4_proc_unlink_done, .rename = nfs4_proc_rename, .rename_setup = nfs4_proc_rename_setup, + .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, .rename_done = nfs4_proc_rename_done, .link = nfs4_proc_link, .symlink = nfs4_proc_symlink, diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c index 528b9a2fae0..b63b6f4d14f 100644 --- a/fs/nfs/proc.c +++ b/fs/nfs/proc.c @@ -377,6 +377,11 @@ nfs_proc_rename_setup(struct rpc_message *msg, struct inode *dir) msg->rpc_proc = &nfs_procedures[NFSPROC_RENAME]; } +static void nfs_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) +{ + rpc_call_start(task); +} + static int nfs_proc_rename_done(struct rpc_task *task, struct inode *old_dir, struct inode *new_dir) @@ -740,6 +745,7 @@ const struct nfs_rpc_ops nfs_v2_clientops = { .unlink_done = nfs_proc_unlink_done, .rename = nfs_proc_rename, .rename_setup = nfs_proc_rename_setup, + .rename_rpc_prepare = nfs_proc_rename_rpc_prepare, .rename_done = nfs_proc_rename_done, .link = nfs_proc_link, .symlink = nfs_proc_symlink, diff --git a/fs/nfs/unlink.c b/fs/nfs/unlink.c index 9c5a7980e24..3210a03342f 100644 --- a/fs/nfs/unlink.c +++ b/fs/nfs/unlink.c @@ -323,18 +323,6 @@ nfs_cancel_async_unlink(struct dentry *dentry) spin_unlock(&dentry->d_lock); } -struct nfs_renamedata { - struct nfs_renameargs args; - struct nfs_renameres res; - struct rpc_cred *cred; - struct inode *old_dir; - struct dentry *old_dentry; - struct nfs_fattr old_fattr; - struct inode *new_dir; - struct dentry *new_dentry; - struct nfs_fattr new_fattr; -}; - /** * nfs_async_rename_done - Sillyrename post-processing * @task: rpc_task of the sillyrename @@ -385,25 +373,16 @@ static void nfs_async_rename_release(void *calldata) kfree(data); } -#if defined(CONFIG_NFS_V4_1) static void nfs_rename_prepare(struct rpc_task *task, void *calldata) { struct nfs_renamedata *data = calldata; - struct nfs_server *server = NFS_SERVER(data->old_dir); - - if (nfs4_setup_sequence(server, &data->args.seq_args, - &data->res.seq_res, task)) - return; - rpc_call_start(task); + NFS_PROTO(data->old_dir)->rename_rpc_prepare(task, data); } -#endif /* CONFIG_NFS_V4_1 */ static const struct rpc_call_ops nfs_rename_ops = { .rpc_call_done = nfs_async_rename_done, .rpc_release = nfs_async_rename_release, -#if defined(CONFIG_NFS_V4_1) .rpc_call_prepare = nfs_rename_prepare, -#endif /* CONFIG_NFS_V4_1 */ }; /** diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 8d93e688188..bfd0d1bf670 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1201,6 +1201,18 @@ struct nfs_unlinkdata { struct nfs_fattr dir_attr; }; +struct nfs_renamedata { + struct nfs_renameargs args; + struct nfs_renameres res; + struct rpc_cred *cred; + struct inode *old_dir; + struct dentry *old_dentry; + struct nfs_fattr old_fattr; + struct inode *new_dir; + struct dentry *new_dentry; + struct nfs_fattr new_fattr; +}; + struct nfs_access_entry; struct nfs_client; struct rpc_timeout; @@ -1235,6 +1247,7 @@ struct nfs_rpc_ops { int (*rename) (struct inode *, struct qstr *, struct inode *, struct qstr *); void (*rename_setup) (struct rpc_message *msg, struct inode *dir); + void (*rename_rpc_prepare)(struct rpc_task *task, struct nfs_renamedata *); int (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir); int (*link) (struct inode *, struct inode *, struct qstr *); int (*symlink) (struct inode *, struct dentry *, struct page *, -- cgit v1.2.3-70-g09d2