diff options
| -rw-r--r-- | drivers/md/dm-thin.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index 41c9e81ba74a..aeb9e20f5978 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -2676,10 +2676,13 @@ static int thin_endio(struct dm_target *ti, if (h->all_io_entry) { INIT_LIST_HEAD(&work); dm_deferred_entry_dec(h->all_io_entry, &work); - spin_lock_irqsave(&pool->lock, flags); - list_for_each_entry_safe(m, tmp, &work, list) - list_add(&m->list, &pool->prepared_discards); - spin_unlock_irqrestore(&pool->lock, flags); + if (!list_empty(&work)) { + spin_lock_irqsave(&pool->lock, flags); + list_for_each_entry_safe(m, tmp, &work, list) + list_add(&m->list, &pool->prepared_discards); + spin_unlock_irqrestore(&pool->lock, flags); + wake_worker(pool); + } } mempool_free(h, pool->endio_hook_pool); |