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| author | Mike Snitzer <snitzer@redhat.com> | 2015-05-27 15:25:27 -0400 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2015-05-27 17:37:23 -0400 |
| commit | 45714fbed4556149d7f1730f5bae74f81d5e2cd5 (patch) | |
| tree | 7bebdecc13511fc03de8b4d08e98d967c45d5d3b /block/ioprio.c | |
| parent | 4c6dd53dd3674c310d7379c6b3273daa9fd95c79 (diff) | |
| download | linux-stable-45714fbed4556149d7f1730f5bae74f81d5e2cd5.tar.gz | |
dm: requeue from blk-mq dm_mq_queue_rq() using BLK_MQ_RQ_QUEUE_BUSY
Use BLK_MQ_RQ_QUEUE_BUSY to requeue a blk-mq request directly from the
DM blk-mq device's .queue_rq. This cleans up the previous convoluted
handling of request requeueing that would return BLK_MQ_RQ_QUEUE_OK
(even though it wasn't) and then run blk_mq_requeue_request() followed
by blk_mq_kick_requeue_list().
Also, document that DM blk-mq ontop of old request_fn devices cannot
fail in clone_rq() since the clone request is preallocated as part of
the pdu.
Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'block/ioprio.c')
0 files changed, 0 insertions, 0 deletions