tree 9e22cc47f6a22f8536ae40ec76aff6611f0c8414
parent 9dc6c806b3c4812619e305685b3c86835bf784ab
author Ming Lei <ming.lei@canonical.com> 1430826594 +0800
committer Jens Axboe <axboe@fb.com> 1430855213 -0600

block: loop: convert to per-device workqueue

Documentation/workqueue.txt:
	If there is dependency among multiple work items used
	during memory reclaim, they should be queued to separate
	wq each with WQ_MEM_RECLAIM.

Loop devices can be stacked, so we have to convert to per-device
workqueue. One example is Fedora live CD.

Fixes: b5dd2f6047ca108001328aac0e8588edd15f1778
Cc: stable@vger.kernel.org (v4.0)
Cc: Justin M. Forbes <jforbes@fedoraproject.org>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@fb.com>