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| author | Kemeng Shi <shikemeng@huaweicloud.com> | 2023-01-18 17:37:17 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-02-06 09:22:28 -0700 |
| commit | 08e3599e7401a7eae5e68f5e2601cc4a4e53951b (patch) | |
| tree | 719fe83bc55c037fe277f6cb6fda6961b9d4d910 /block | |
| parent | 47df9ce95cd568d3f84218c4f65e9fbd4dfeda55 (diff) | |
| download | linux-stable-08e3599e7401a7eae5e68f5e2601cc4a4e53951b.tar.gz linux-stable-08e3599e7401a7eae5e68f5e2601cc4a4e53951b.tar.bz2 linux-stable-08e3599e7401a7eae5e68f5e2601cc4a4e53951b.zip | |
blk-mq: remove unnecessary list_empty check in blk_mq_try_issue_list_directly
We only break the list walk if we get 'BLK_STS_*RESOURCE'. We also
count errors for 'BLK_STS_*RESOURCE' error. If list is not empty,
errors will always be non-zero. So we can remove unnecessary list_empty
check. This will remove redundant list_empty check for case that
error happened at sending last request in list.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-mq.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 3ac732368866..b764bdd6fd81 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -2839,8 +2839,7 @@ void blk_mq_try_issue_list_directly(struct blk_mq_hw_ctx *hctx, * the driver there was more coming, but that turned out to * be a lie. */ - if ((!list_empty(list) || errors) && - hctx->queue->mq_ops->commit_rqs && queued) + if (errors && hctx->queue->mq_ops->commit_rqs && queued) hctx->queue->mq_ops->commit_rqs(hctx); } |