diff options
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/dm-thin.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index 85ada5ad2121..5a2c494cb552 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -882,12 +882,15 @@ static void cell_defer_no_holder(struct thin_c *tc, struct dm_bio_prison_cell *c { struct pool *pool = tc->pool; unsigned long flags; + int has_work; spin_lock_irqsave(&tc->lock, flags); cell_release_no_holder(pool, cell, &tc->deferred_bio_list); + has_work = !bio_list_empty(&tc->deferred_bio_list); spin_unlock_irqrestore(&tc->lock, flags); - wake_worker(pool); + if (has_work) + wake_worker(pool); } static void thin_defer_bio(struct thin_c *tc, struct bio *bio); |