diff options
Diffstat (limited to 'drivers/block/drbd/drbd_main.c')
| -rw-r--r-- | drivers/block/drbd/drbd_main.c | 302 |
1 files changed, 125 insertions, 177 deletions
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c index 960645c26e6..9b465bb6848 100644 --- a/drivers/block/drbd/drbd_main.c +++ b/drivers/block/drbd/drbd_main.c @@ -26,7 +26,10 @@ */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/module.h> +#include <linux/jiffies.h> #include <linux/drbd.h> #include <asm/uaccess.h> #include <asm/types.h> @@ -54,16 +57,14 @@ #include "drbd_int.h" #include "drbd_protocol.h" #include "drbd_req.h" /* only for _req_mod in tl_release and tl_clear */ - #include "drbd_vli.h" +#include "drbd_debugfs.h" static DEFINE_MUTEX(drbd_main_mutex); static int drbd_open(struct block_device *bdev, fmode_t mode); static void drbd_release(struct gendisk *gd, fmode_t mode); -static int w_md_sync(struct drbd_work *w, int unused); static void md_sync_timer_fn(unsigned long data); static int w_bitmap_io(struct drbd_work *w, int unused); -static int w_go_diskless(struct drbd_work *w, int unused); MODULE_AUTHOR("Philipp Reisner <phil@linbit.com>, " "Lars Ellenberg <lars@linbit.com>"); @@ -264,7 +265,7 @@ bail: /** * _tl_restart() - Walks the transfer log, and applies an action to all requests - * @device: DRBD device. + * @connection: DRBD connection to operate on. * @what: The action/event to perform with all request objects * * @what might be one of CONNECTION_LOST_WHILE_PENDING, RESEND, FAIL_FROZEN_DISK_IO, @@ -662,6 +663,11 @@ static int __send_command(struct drbd_connection *connection, int vnr, msg_flags); if (data && !err) err = drbd_send_all(connection, sock->socket, data, size, 0); + /* DRBD protocol "pings" are latency critical. + * This is supposed to trigger tcp_push_pending_frames() */ + if (!err && (cmd == P_PING || cmd == P_PING_ACK)) + drbd_tcp_nodelay(sock->socket); + return err; } @@ -1636,7 +1642,10 @@ int drbd_send_dblock(struct drbd_peer_device *peer_device, struct drbd_request * if (peer_device->connection->agreed_pro_version >= 100) { if (req->rq_state & RQ_EXP_RECEIVE_ACK) dp_flags |= DP_SEND_RECEIVE_ACK; - if (req->rq_state & RQ_EXP_WRITE_ACK) + /* During resync, request an explicit write ack, + * even in protocol != C */ + if (req->rq_state & RQ_EXP_WRITE_ACK + || (dp_flags & DP_MAY_SET_IN_SYNC)) dp_flags |= DP_SEND_WRITE_ACK; } p->dp_flags = cpu_to_be32(dp_flags); @@ -1900,6 +1909,7 @@ void drbd_init_set_defaults(struct drbd_device *device) drbd_set_defaults(device); atomic_set(&device->ap_bio_cnt, 0); + atomic_set(&device->ap_actlog_cnt, 0); atomic_set(&device->ap_pending_cnt, 0); atomic_set(&device->rs_pending_cnt, 0); atomic_set(&device->unacked_cnt, 0); @@ -1908,7 +1918,7 @@ void drbd_init_set_defaults(struct drbd_device *device) atomic_set(&device->rs_sect_in, 0); atomic_set(&device->rs_sect_ev, 0); atomic_set(&device->ap_in_flight, 0); - atomic_set(&device->md_io_in_use, 0); + atomic_set(&device->md_io.in_use, 0); mutex_init(&device->own_state_mutex); device->state_mutex = &device->own_state_mutex; @@ -1924,17 +1934,15 @@ void drbd_init_set_defaults(struct drbd_device *device) INIT_LIST_HEAD(&device->resync_reads); INIT_LIST_HEAD(&device->resync_work.list); INIT_LIST_HEAD(&device->unplug_work.list); - INIT_LIST_HEAD(&device->go_diskless.list); - INIT_LIST_HEAD(&device->md_sync_work.list); - INIT_LIST_HEAD(&device->start_resync_work.list); INIT_LIST_HEAD(&device->bm_io_work.w.list); + INIT_LIST_HEAD(&device->pending_master_completion[0]); + INIT_LIST_HEAD(&device->pending_master_completion[1]); + INIT_LIST_HEAD(&device->pending_completion[0]); + INIT_LIST_HEAD(&device->pending_completion[1]); device->resync_work.cb = w_resync_timer; device->unplug_work.cb = w_send_write_hint; - device->go_diskless.cb = w_go_diskless; - device->md_sync_work.cb = w_md_sync; device->bm_io_work.w.cb = w_bitmap_io; - device->start_resync_work.cb = w_start_resync; init_timer(&device->resync_timer); init_timer(&device->md_sync_timer); @@ -1992,7 +2000,7 @@ void drbd_device_cleanup(struct drbd_device *device) drbd_bm_cleanup(device); } - drbd_free_bc(device->ldev); + drbd_free_ldev(device->ldev); device->ldev = NULL; clear_bit(AL_SUSPENDED, &device->flags); @@ -2006,7 +2014,6 @@ void drbd_device_cleanup(struct drbd_device *device) D_ASSERT(device, list_empty(&first_peer_device(device)->connection->sender_work.q)); D_ASSERT(device, list_empty(&device->resync_work.list)); D_ASSERT(device, list_empty(&device->unplug_work.list)); - D_ASSERT(device, list_empty(&device->go_diskless.list)); drbd_set_defaults(device); } @@ -2129,20 +2136,6 @@ Enomem: return -ENOMEM; } -static int drbd_notify_sys(struct notifier_block *this, unsigned long code, - void *unused) -{ - /* just so we have it. you never know what interesting things we - * might want to do here some day... - */ - - return NOTIFY_DONE; -} - -static struct notifier_block drbd_notifier = { - .notifier_call = drbd_notify_sys, -}; - static void drbd_release_all_peer_reqs(struct drbd_device *device) { int rr; @@ -2173,7 +2166,7 @@ void drbd_destroy_device(struct kref *kref) { struct drbd_device *device = container_of(kref, struct drbd_device, kref); struct drbd_resource *resource = device->resource; - struct drbd_connection *connection; + struct drbd_peer_device *peer_device, *tmp_peer_device; del_timer_sync(&device->request_timer); @@ -2187,7 +2180,7 @@ void drbd_destroy_device(struct kref *kref) if (device->this_bdev) bdput(device->this_bdev); - drbd_free_bc(device->ldev); + drbd_free_ldev(device->ldev); device->ldev = NULL; drbd_release_all_peer_reqs(device); @@ -2200,15 +2193,20 @@ void drbd_destroy_device(struct kref *kref) if (device->bitmap) /* should no longer be there. */ drbd_bm_cleanup(device); - __free_page(device->md_io_page); + __free_page(device->md_io.page); put_disk(device->vdisk); blk_cleanup_queue(device->rq_queue); kfree(device->rs_plan_s); - kfree(first_peer_device(device)); - kfree(device); - for_each_connection(connection, resource) - kref_put(&connection->kref, drbd_destroy_connection); + /* not for_each_connection(connection, resource): + * those may have been cleaned up and disassociated already. + */ + for_each_peer_device_safe(peer_device, tmp_peer_device, device) { + kref_put(&peer_device->connection->kref, drbd_destroy_connection); + kfree(peer_device); + } + memset(device, 0xfd, sizeof(*device)); + kfree(device); kref_put(&resource->kref, drbd_destroy_resource); } @@ -2236,7 +2234,7 @@ static void do_retry(struct work_struct *ws) list_for_each_entry_safe(req, tmp, &writes, tl_requests) { struct drbd_device *device = req->device; struct bio *bio = req->master_bio; - unsigned long start_time = req->start_time; + unsigned long start_jif = req->start_jif; bool expected; expected = @@ -2271,10 +2269,12 @@ static void do_retry(struct work_struct *ws) /* We are not just doing generic_make_request(), * as we want to keep the start_time information. */ inc_ap_bio(device); - __drbd_make_request(device, bio, start_time); + __drbd_make_request(device, bio, start_jif); } } +/* called via drbd_req_put_completion_ref(), + * holds resource->req_lock */ void drbd_restart_request(struct drbd_request *req) { unsigned long flags; @@ -2298,6 +2298,7 @@ void drbd_destroy_resource(struct kref *kref) idr_destroy(&resource->devices); free_cpumask_var(resource->cpu_mask); kfree(resource->name); + memset(resource, 0xf2, sizeof(*resource)); kfree(resource); } @@ -2307,8 +2308,10 @@ void drbd_free_resource(struct drbd_resource *resource) for_each_connection_safe(connection, tmp, resource) { list_del(&connection->connections); + drbd_debugfs_connection_cleanup(connection); kref_put(&connection->kref, drbd_destroy_connection); } + drbd_debugfs_resource_cleanup(resource); kref_put(&resource->kref, drbd_destroy_resource); } @@ -2318,8 +2321,6 @@ static void drbd_cleanup(void) struct drbd_device *device; struct drbd_resource *resource, *tmp; - unregister_reboot_notifier(&drbd_notifier); - /* first remove proc, * drbdsetup uses it's presence to detect * whether DRBD is loaded. @@ -2335,6 +2336,7 @@ static void drbd_cleanup(void) destroy_workqueue(retry.wq); drbd_genl_unregister(); + drbd_debugfs_cleanup(); idr_for_each_entry(&drbd_devices, device, i) drbd_delete_device(device); @@ -2350,7 +2352,7 @@ static void drbd_cleanup(void) idr_destroy(&drbd_devices); - printk(KERN_INFO "drbd: module cleanup done.\n"); + pr_info("module cleanup done.\n"); } /** @@ -2539,6 +2541,20 @@ int set_resource_options(struct drbd_resource *resource, struct res_opts *res_op if (nr_cpu_ids > 1 && res_opts->cpu_mask[0] != 0) { err = bitmap_parse(res_opts->cpu_mask, DRBD_CPU_MASK_SIZE, cpumask_bits(new_cpu_mask), nr_cpu_ids); + if (err == -EOVERFLOW) { + /* So what. mask it out. */ + cpumask_var_t tmp_cpu_mask; + if (zalloc_cpumask_var(&tmp_cpu_mask, GFP_KERNEL)) { + cpumask_setall(tmp_cpu_mask); + cpumask_and(new_cpu_mask, new_cpu_mask, tmp_cpu_mask); + drbd_warn(resource, "Overflow in bitmap_parse(%.12s%s), truncating to %u bits\n", + res_opts->cpu_mask, + strlen(res_opts->cpu_mask) > 12 ? "..." : "", + nr_cpu_ids); + free_cpumask_var(tmp_cpu_mask); + err = 0; + } + } if (err) { drbd_warn(resource, "bitmap_parse() failed with %d\n", err); /* retcode = ERR_CPU_MASK_PARSE; */ @@ -2579,10 +2595,12 @@ struct drbd_resource *drbd_create_resource(const char *name) kref_init(&resource->kref); idr_init(&resource->devices); INIT_LIST_HEAD(&resource->connections); + resource->write_ordering = WO_bdev_flush; list_add_tail_rcu(&resource->resources, &drbd_resources); mutex_init(&resource->conf_update); mutex_init(&resource->adm_mutex); spin_lock_init(&resource->req_lock); + drbd_debugfs_resource_add(resource); return resource; fail_free_name: @@ -2593,7 +2611,7 @@ fail: return NULL; } -/* caller must be under genl_lock() */ +/* caller must be under adm_mutex */ struct drbd_connection *conn_create(const char *name, struct res_opts *res_opts) { struct drbd_resource *resource; @@ -2617,7 +2635,6 @@ struct drbd_connection *conn_create(const char *name, struct res_opts *res_opts) INIT_LIST_HEAD(&connection->current_epoch->list); connection->epochs = 1; spin_lock_init(&connection->epoch_lock); - connection->write_ordering = WO_bdev_flush; connection->send.seen_any_write_yet = false; connection->send.current_epoch_nr = 0; @@ -2652,6 +2669,7 @@ struct drbd_connection *conn_create(const char *name, struct res_opts *res_opts) kref_get(&resource->kref); list_add_tail_rcu(&connection->connections, &resource->connections); + drbd_debugfs_connection_add(connection); return connection; fail_resource: @@ -2680,6 +2698,7 @@ void drbd_destroy_connection(struct kref *kref) drbd_free_socket(&connection->data); kfree(connection->int_dig_in); kfree(connection->int_dig_vv); + memset(connection, 0xfc, sizeof(*connection)); kfree(connection); kref_put(&resource->kref, drbd_destroy_resource); } @@ -2694,7 +2713,6 @@ static int init_submitter(struct drbd_device *device) return -ENOMEM; INIT_WORK(&device->submit.worker, do_submit); - spin_lock_init(&device->submit.lock); INIT_LIST_HEAD(&device->submit.writes); return 0; } @@ -2764,8 +2782,8 @@ enum drbd_ret_code drbd_create_device(struct drbd_config_context *adm_ctx, unsig blk_queue_merge_bvec(q, drbd_merge_bvec); q->queue_lock = &resource->req_lock; - device->md_io_page = alloc_page(GFP_KERNEL); - if (!device->md_io_page) + device->md_io.page = alloc_page(GFP_KERNEL); + if (!device->md_io.page) goto out_no_io_page; if (drbd_bm_init(device)) @@ -2794,6 +2812,7 @@ enum drbd_ret_code drbd_create_device(struct drbd_config_context *adm_ctx, unsig kref_get(&device->kref); INIT_LIST_HEAD(&device->peer_devices); + INIT_LIST_HEAD(&device->pending_bitmap_io); for_each_connection(connection, resource) { peer_device = kzalloc(sizeof(struct drbd_peer_device), GFP_KERNEL); if (!peer_device) @@ -2829,7 +2848,10 @@ enum drbd_ret_code drbd_create_device(struct drbd_config_context *adm_ctx, unsig for_each_peer_device(peer_device, device) drbd_connected(peer_device); } - + /* move to create_peer_device() */ + for_each_peer_device(peer_device, device) + drbd_debugfs_peer_device_add(peer_device); + drbd_debugfs_device_add(device); return NO_ERROR; out_idr_remove_vol: @@ -2853,7 +2875,7 @@ out_idr_remove_minor: out_no_minor_idr: drbd_bm_cleanup(device); out_no_bitmap: - __free_page(device->md_io_page); + __free_page(device->md_io.page); out_no_io_page: put_disk(disk); out_no_disk: @@ -2868,8 +2890,13 @@ void drbd_delete_device(struct drbd_device *device) { struct drbd_resource *resource = device->resource; struct drbd_connection *connection; + struct drbd_peer_device *peer_device; int refs = 3; + /* move to free_peer_device() */ + for_each_peer_device(peer_device, device) + drbd_debugfs_peer_device_cleanup(peer_device); + drbd_debugfs_device_cleanup(device); for_each_connection(connection, resource) { idr_remove(&connection->peer_devices, device->vnr); refs++; @@ -2881,13 +2908,12 @@ void drbd_delete_device(struct drbd_device *device) kref_sub(&device->kref, refs, drbd_destroy_device); } -int __init drbd_init(void) +static int __init drbd_init(void) { int err; if (minor_count < DRBD_MINOR_COUNT_MIN || minor_count > DRBD_MINOR_COUNT_MAX) { - printk(KERN_ERR - "drbd: invalid minor_count (%d)\n", minor_count); + pr_err("invalid minor_count (%d)\n", minor_count); #ifdef MODULE return -EINVAL; #else @@ -2897,14 +2923,11 @@ int __init drbd_init(void) err = register_blkdev(DRBD_MAJOR, "drbd"); if (err) { - printk(KERN_ERR - "drbd: unable to register block device major %d\n", + pr_err("unable to register block device major %d\n", DRBD_MAJOR); return err; } - register_reboot_notifier(&drbd_notifier); - /* * allocate all necessary structs */ @@ -2918,7 +2941,7 @@ int __init drbd_init(void) err = drbd_genl_register(); if (err) { - printk(KERN_ERR "drbd: unable to register generic netlink family\n"); + pr_err("unable to register generic netlink family\n"); goto fail; } @@ -2929,38 +2952,39 @@ int __init drbd_init(void) err = -ENOMEM; drbd_proc = proc_create_data("drbd", S_IFREG | S_IRUGO , NULL, &drbd_proc_fops, NULL); if (!drbd_proc) { - printk(KERN_ERR "drbd: unable to register proc file\n"); + pr_err("unable to register proc file\n"); goto fail; } retry.wq = create_singlethread_workqueue("drbd-reissue"); if (!retry.wq) { - printk(KERN_ERR "drbd: unable to create retry workqueue\n"); + pr_err("unable to create retry workqueue\n"); goto fail; } INIT_WORK(&retry.worker, do_retry); spin_lock_init(&retry.lock); INIT_LIST_HEAD(&retry.writes); - printk(KERN_INFO "drbd: initialized. " + if (drbd_debugfs_init()) + pr_notice("failed to initialize debugfs -- will not be available\n"); + + pr_info("initialized. " "Version: " REL_VERSION " (api:%d/proto:%d-%d)\n", API_VERSION, PRO_VERSION_MIN, PRO_VERSION_MAX); - printk(KERN_INFO "drbd: %s\n", drbd_buildtag()); - printk(KERN_INFO "drbd: registered as block device major %d\n", - DRBD_MAJOR); - + pr_info("%s\n", drbd_buildtag()); + pr_info("registered as block device major %d\n", DRBD_MAJOR); return 0; /* Success! */ fail: drbd_cleanup(); if (err == -ENOMEM) - printk(KERN_ERR "drbd: ran out of memory\n"); + pr_err("ran out of memory\n"); else - printk(KERN_ERR "drbd: initialization failure\n"); + pr_err("initialization failure\n"); return err; } -void drbd_free_bc(struct drbd_backing_dev *ldev) +void drbd_free_ldev(struct drbd_backing_dev *ldev) { if (ldev == NULL) return; @@ -2972,24 +2996,29 @@ void drbd_free_bc(struct drbd_backing_dev *ldev) kfree(ldev); } -void drbd_free_sock(struct drbd_connection *connection) +static void drbd_free_one_sock(struct drbd_socket *ds) { - if (connection->data.socket) { - mutex_lock(&connection->data.mutex); - kernel_sock_shutdown(connection->data.socket, SHUT_RDWR); - sock_release(connection->data.socket); - connection->data.socket = NULL; - mutex_unlock(&connection->data.mutex); - } - if (connection->meta.socket) { - mutex_lock(&connection->meta.mutex); - kernel_sock_shutdown(connection->meta.socket, SHUT_RDWR); - sock_release(connection->meta.socket); - connection->meta.socket = NULL; - mutex_unlock(&connection->meta.mutex); + struct socket *s; + mutex_lock(&ds->mutex); + s = ds->socket; + ds->socket = NULL; + mutex_unlock(&ds->mutex); + if (s) { + /* so debugfs does not need to mutex_lock() */ + synchronize_rcu(); + kernel_sock_shutdown(s, SHUT_RDWR); + sock_release(s); } } +void drbd_free_sock(struct drbd_connection *connection) +{ + if (connection->data.socket) + drbd_free_one_sock(&connection->data); + if (connection->meta.socket) + drbd_free_one_sock(&connection->meta); +} + /* meta data management */ void conn_md_sync(struct drbd_connection *connection) @@ -3093,7 +3122,7 @@ void drbd_md_sync(struct drbd_device *device) if (!get_ldev_if_state(device, D_FAILED)) return; - buffer = drbd_md_get_buffer(device); + buffer = drbd_md_get_buffer(device, __func__); if (!buffer) goto out; @@ -3253,7 +3282,7 @@ int drbd_md_read(struct drbd_device *device, struct drbd_backing_dev *bdev) if (device->state.disk != D_DISKLESS) return ERR_DISK_CONFIGURED; - buffer = drbd_md_get_buffer(device); + buffer = drbd_md_get_buffer(device, __func__); if (!buffer) return ERR_NOMEM; @@ -3466,23 +3495,19 @@ void drbd_uuid_set_bm(struct drbd_device *device, u64 val) __must_hold(local) * * Sets all bits in the bitmap and writes the whole bitmap to stable storage. */ -int drbd_bmio_set_n_write(struct drbd_device *device) +int drbd_bmio_set_n_write(struct drbd_device *device) __must_hold(local) { int rv = -EIO; - if (get_ldev_if_state(device, D_ATTACHING)) { - drbd_md_set_flag(device, MDF_FULL_SYNC); - drbd_md_sync(device); - drbd_bm_set_all(device); - - rv = drbd_bm_write(device); + drbd_md_set_flag(device, MDF_FULL_SYNC); + drbd_md_sync(device); + drbd_bm_set_all(device); - if (!rv) { - drbd_md_clear_flag(device, MDF_FULL_SYNC); - drbd_md_sync(device); - } + rv = drbd_bm_write(device); - put_ldev(device); + if (!rv) { + drbd_md_clear_flag(device, MDF_FULL_SYNC); + drbd_md_sync(device); } return rv; @@ -3494,18 +3519,11 @@ int drbd_bmio_set_n_write(struct drbd_device *device) * * Clears all bits in the bitmap and writes the whole bitmap to stable storage. */ -int drbd_bmio_clear_n_write(struct drbd_device *device) +int drbd_bmio_clear_n_write(struct drbd_device *device) __must_hold(local) { - int rv = -EIO; - drbd_resume_al(device); - if (get_ldev_if_state(device, D_ATTACHING)) { - drbd_bm_clear_all(device); - rv = drbd_bm_write(device); - put_ldev(device); - } - - return rv; + drbd_bm_clear_all(device); + return drbd_bm_write(device); } static int w_bitmap_io(struct drbd_work *w, int unused) @@ -3537,61 +3555,6 @@ static int w_bitmap_io(struct drbd_work *w, int unused) return 0; } -void drbd_ldev_destroy(struct drbd_device *device) -{ - lc_destroy(device->resync); - device->resync = NULL; - lc_destroy(device->act_log); - device->act_log = NULL; - __no_warn(local, - drbd_free_bc(device->ldev); - device->ldev = NULL;); - - clear_bit(GO_DISKLESS, &device->flags); -} - -static int w_go_diskless(struct drbd_work *w, int unused) -{ - struct drbd_device *device = - container_of(w, struct drbd_device, go_diskless); - - D_ASSERT(device, device->state.disk == D_FAILED); - /* we cannot assert local_cnt == 0 here, as get_ldev_if_state will - * inc/dec it frequently. Once we are D_DISKLESS, no one will touch - * the protected members anymore, though, so once put_ldev reaches zero - * again, it will be safe to free them. */ - - /* Try to write changed bitmap pages, read errors may have just - * set some bits outside the area covered by the activity log. - * - * If we have an IO error during the bitmap writeout, - * we will want a full sync next time, just in case. - * (Do we want a specific meta data flag for this?) - * - * If that does not make it to stable storage either, - * we cannot do anything about that anymore. - * - * We still need to check if both bitmap and ldev are present, we may - * end up here after a failed attach, before ldev was even assigned. - */ - if (device->bitmap && device->ldev) { - /* An interrupted resync or similar is allowed to recounts bits - * while we detach. - * Any modifications would not be expected anymore, though. - */ - if (drbd_bitmap_io_from_worker(device, drbd_bm_write, - "detach", BM_LOCKED_TEST_ALLOWED)) { - if (test_bit(WAS_READ_ERROR, &device->flags)) { - drbd_md_set_flag(device, MDF_FULL_SYNC); - drbd_md_sync(device); - } - } - } - - drbd_force_state(device, NS(disk, D_DISKLESS)); - return 0; -} - /** * drbd_queue_bitmap_io() - Queues an IO operation on the whole bitmap * @device: DRBD device. @@ -3603,6 +3566,9 @@ static int w_go_diskless(struct drbd_work *w, int unused) * that drbd_set_out_of_sync() can not be called. This function MAY ONLY be * called from worker context. It MUST NOT be used while a previous such * work is still pending! + * + * Its worker function encloses the call of io_fn() by get_ldev() and + * put_ldev(). */ void drbd_queue_bitmap_io(struct drbd_device *device, int (*io_fn)(struct drbd_device *), @@ -3685,25 +3651,7 @@ int drbd_md_test_flag(struct drbd_backing_dev *bdev, int flag) static void md_sync_timer_fn(unsigned long data) { struct drbd_device *device = (struct drbd_device *) data; - - /* must not double-queue! */ - if (list_empty(&device->md_sync_work.list)) - drbd_queue_work_front(&first_peer_device(device)->connection->sender_work, - &device->md_sync_work); -} - -static int w_md_sync(struct drbd_work *w, int unused) -{ - struct drbd_device *device = - container_of(w, struct drbd_device, md_sync_work); - - drbd_warn(device, "md_sync_timer expired! Worker calls drbd_md_sync().\n"); -#ifdef DEBUG - drbd_warn(device, "last md_mark_dirty: %s:%u\n", - device->last_md_mark_dirty.func, device->last_md_mark_dirty.line); -#endif - drbd_md_sync(device); - return 0; + drbd_device_post_work(device, MD_SYNC); } const char *cmdname(enum drbd_packet cmd) |