From: Bart Van Assche <bart.vanassche@xxxxxxxxxxx> commit 2e91c3694181dc500faffec16c5aaa0ac5e15449 upstream. 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@xxxxxxxxxxx> Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx> Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/md/dm.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -2939,9 +2939,7 @@ static void __dm_destroy(struct mapped_d 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) flush_kthread_worker(&md->kworker);
