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| author | Christoph Hellwig <hch@infradead.org> | 2014-02-11 16:27:14 (GMT) |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-02-11 16:34:08 (GMT) |
| commit | 49f5baa5109897b8cee491e8a7c4d74052b6bc1e (patch) | |
| tree | 9e0cf5285be207bde015af948e8fd7b89760ffcd /drivers/block/xen-blkback | |
| parent | 1e93b8c274268038c93763dca65a73b42a081e10 (diff) | |
| download | linux-49f5baa5109897b8cee491e8a7c4d74052b6bc1e.tar.xz | |
blk-mq: pair blk_mq_start_request / blk_mq_requeue_request
Make sure we have a proper pairing between starting and requeueing
requests. Move the dma drain and REQ_END setup into blk_mq_start_request,
and make sure blk_mq_requeue_request properly undoes them, giving us
a pair of function to prepare and unprepare a request without leaving
side effects.
Together this ensures we always clean up properly after
BLK_MQ_RQ_QUEUE_BUSY returns from ->queue_rq.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/block/xen-blkback')
0 files changed, 0 insertions, 0 deletions