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| author | Ming Lei <ming.lei@redhat.com> | 2018-01-18 07:06:59 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-01-18 07:38:52 +0300 |
| commit | 23d4ee19e789ae3dce3e04bd24e3d1537965475f (patch) | |
| tree | ce2feb7137e252bc89dfcd3c00f2f99ea5e0f15f /block/bfq-iosched.h | |
| parent | de99a346884f019387230bc549de74456daca248 (diff) | |
| download | linux-23d4ee19e789ae3dce3e04bd24e3d1537965475f.tar.xz | |
blk-mq: don't dispatch request in blk_mq_request_direct_issue if queue is busy
If we run into blk_mq_request_direct_issue(), when queue is busy, we
don't want to dispatch this request into hctx->dispatch_list, and
what we need to do is to return the queue busy info to caller, so
that caller can deal with it well.
Fixes: 396eaf21ee ("blk-mq: improve DM's blk-mq IO merging via blk_insert_cloned_request feedback")
Reported-by: Laurence Oberman <loberman@redhat.com>
Reviewed-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/bfq-iosched.h')
0 files changed, 0 insertions, 0 deletions