diff options
| author | Mike Snitzer <snitzer@redhat.com> | 2020-09-23 23:06:51 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-09-25 17:20:03 +0300 |
| commit | 021a24460dc28e7412aecfae89f60e1847e685c0 (patch) | |
| tree | 14e5d8d9a110a92135fcb31457a906ca2e85cac3 /block | |
| parent | 700cd59db518edc2028df7c830d6cb6f7164573b (diff) | |
| download | linux-021a24460dc28e7412aecfae89f60e1847e685c0.tar.xz | |
block: add QUEUE_FLAG_NOWAIT
Add QUEUE_FLAG_NOWAIT to allow a block device to advertise support for
REQ_NOWAIT. Bio-based devices may set QUEUE_FLAG_NOWAIT where
applicable.
Update QUEUE_FLAG_MQ_DEFAULT to include QUEUE_FLAG_NOWAIT. Also
update submit_bio_checks() to verify it is set for REQ_NOWAIT bios.
Reported-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-core.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 1cc4fa6bc7fe..4884f1e7451b 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -814,9 +814,9 @@ static noinline_for_stack bool submit_bio_checks(struct bio *bio) /* * For a REQ_NOWAIT based request, return -EOPNOTSUPP - * if queue is not a request based queue. + * if queue does not support NOWAIT. */ - if ((bio->bi_opf & REQ_NOWAIT) && !queue_is_mq(q)) + if ((bio->bi_opf & REQ_NOWAIT) && !blk_queue_nowait(q)) goto not_supported; if (should_fail_bio(bio)) |