diff options
Diffstat (limited to 'drivers/md/raid1.c')
| -rw-r--r-- | drivers/md/raid1.c | 29 |
1 files changed, 14 insertions, 15 deletions
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index c2a21ae56d97..2b7a7ff401dc 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -565,12 +565,6 @@ static void flush_pending_writes(conf_t *conf) spin_unlock_irq(&conf->device_lock); } -static void md_kick_device(mddev_t *mddev) -{ - blk_flush_plug(current); - md_wakeup_thread(mddev->thread); -} - /* Barriers.... * Sometimes we need to suspend IO while we do something else, * either some resync/recovery, or reconfigure the array. @@ -600,7 +594,7 @@ static void raise_barrier(conf_t *conf) /* Wait until no block IO is waiting */ wait_event_lock_irq(conf->wait_barrier, !conf->nr_waiting, - conf->resync_lock, md_kick_device(conf->mddev)); + conf->resync_lock, ); /* block any new IO from starting */ conf->barrier++; @@ -608,7 +602,7 @@ static void raise_barrier(conf_t *conf) /* Now wait for all pending IO to complete */ wait_event_lock_irq(conf->wait_barrier, !conf->nr_pending && conf->barrier < RESYNC_DEPTH, - conf->resync_lock, md_kick_device(conf->mddev)); + conf->resync_lock, ); spin_unlock_irq(&conf->resync_lock); } @@ -630,7 +624,7 @@ static void wait_barrier(conf_t *conf) conf->nr_waiting++; wait_event_lock_irq(conf->wait_barrier, !conf->barrier, conf->resync_lock, - md_kick_device(conf->mddev)); + ); conf->nr_waiting--; } conf->nr_pending++; @@ -666,8 +660,7 @@ static void freeze_array(conf_t *conf) wait_event_lock_irq(conf->wait_barrier, conf->nr_pending == conf->nr_queued+1, conf->resync_lock, - ({ flush_pending_writes(conf); - md_kick_device(conf->mddev); })); + flush_pending_writes(conf)); spin_unlock_irq(&conf->resync_lock); } static void unfreeze_array(conf_t *conf) @@ -729,6 +722,7 @@ static int make_request(mddev_t *mddev, struct bio * bio) const unsigned long do_sync = (bio->bi_rw & REQ_SYNC); const unsigned long do_flush_fua = (bio->bi_rw & (REQ_FLUSH | REQ_FUA)); mdk_rdev_t *blocked_rdev; + int plugged; /* * Register the new request and wait if the reconstruction @@ -820,6 +814,8 @@ static int make_request(mddev_t *mddev, struct bio * bio) * inc refcount on their rdev. Record them by setting * bios[x] to bio */ + plugged = mddev_check_plugged(mddev); + disks = conf->raid_disks; retry_write: blocked_rdev = NULL; @@ -925,7 +921,7 @@ static int make_request(mddev_t *mddev, struct bio * bio) /* In case raid1d snuck in to freeze_array */ wake_up(&conf->wait_barrier); - if (do_sync || !bitmap) + if (do_sync || !bitmap || !plugged) md_wakeup_thread(mddev->thread); return 0; @@ -1516,13 +1512,16 @@ static void raid1d(mddev_t *mddev) conf_t *conf = mddev->private; struct list_head *head = &conf->retry_list; mdk_rdev_t *rdev; + struct blk_plug plug; md_check_recovery(mddev); - + + blk_start_plug(&plug); for (;;) { char b[BDEVNAME_SIZE]; - flush_pending_writes(conf); + if (atomic_read(&mddev->plug_cnt) == 0) + flush_pending_writes(conf); spin_lock_irqsave(&conf->device_lock, flags); if (list_empty(head)) { @@ -1593,6 +1592,7 @@ static void raid1d(mddev_t *mddev) } cond_resched(); } + blk_finish_plug(&plug); } @@ -2039,7 +2039,6 @@ static int stop(mddev_t *mddev) md_unregister_thread(mddev->thread); mddev->thread = NULL; - blk_sync_queue(mddev->queue); /* the unplug fn references 'conf'*/ if (conf->r1bio_pool) mempool_destroy(conf->r1bio_pool); kfree(conf->mirrors); |
