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| author | Ming Lei <ming.lei@canonical.com> | 2015-05-05 19:49:54 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2015-05-05 13:46:53 -0600 |
| commit | f4aa4c7bbac6c4afdd4adccf90898c1a3685396d (patch) | |
| tree | 9e22cc47f6a22f8536ae40ec76aff6611f0c8414 /drivers/block/loop.h | |
| parent | 9dc6c806b3c4812619e305685b3c86835bf784ab (diff) | |
| download | lwn-f4aa4c7bbac6c4afdd4adccf90898c1a3685396d.tar.gz lwn-f4aa4c7bbac6c4afdd4adccf90898c1a3685396d.zip | |
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>
Diffstat (limited to 'drivers/block/loop.h')
| -rw-r--r-- | drivers/block/loop.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/block/loop.h b/drivers/block/loop.h index 301c27f8323f..49564edf5581 100644 --- a/drivers/block/loop.h +++ b/drivers/block/loop.h @@ -54,6 +54,7 @@ struct loop_device { gfp_t old_gfp_mask; spinlock_t lo_lock; + struct workqueue_struct *wq; struct list_head write_cmd_head; struct work_struct write_work; bool write_started; |