dm: use blk_set_queue_dying() in __dm_destroy()

After QUEUE_FLAG_DYING has been set any code that is waiting in
get_request() should be woken up.  But to get this behaviour
blk_set_queue_dying() must be used instead of only setting
QUEUE_FLAG_DYING.

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index ef7bf1dd6900893c8faf728cb57a93ad8b17af54..091eaa635645c72687ee3a7215612e2fd806fb70 100644 (file)
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -1886,9 +1886,7 @@ static void __dm_destroy(struct mapped_device *md, bool wait)
        set_bit(DMF_FREEING, &md->flags);
        spin_unlock(&_minor_lock);
 
-       spin_lock_irq(q->queue_lock);
-       queue_flag_set(QUEUE_FLAG_DYING, q);
-       spin_unlock_irq(q->queue_lock);
+       blk_set_queue_dying(q);
 
        if (dm_request_based(md) && md->kworker_task)
                kthread_flush_worker(&md->kworker);