dm: use blk_set_queue_dying() in __dm_destroy()
commit 2e91c369 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>
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