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dm: use blk_set_queue_dying() in __dm_destroy()

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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@sandisk.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Bart Van Assche 2016-11-18 14:26:47 -08:00 committed by Greg Kroah-Hartman
parent 56f7de7b6d
commit 4a5bdc546a
1 changed files with 1 additions and 3 deletions
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4
drivers/md/dm.c
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@ -2939,9 +2939,7 @@ 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)
flush_kthread_worker(&md->kworker);