diff options
| author | Kemeng Shi <shikemeng@huaweicloud.com> | 2023-01-18 17:37:22 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-02-06 09:22:28 -0700 |
| commit | e4ef2e05e0020db0d61b2cf451ef38a2bba33910 (patch) | |
| tree | ead5c330bfc8397c92cc5141468726ee2750ce38 /block/blk-mq.c | |
| parent | 984ce0a7d75b577fd84f2cc7a83e6e2d2503f90e (diff) | |
blk-mq: simplify flush check in blk_mq_dispatch_rq_list
1. Remove check of needs_resource and ret == BLK_STS_DEV_RESOURCE.
For busy error BLK_STS*_RESOURCE, request will always be added
back to list, so need_resource will not be true and ret will
not be == BLK_STS_DEV_RESOURCE if list is empty. We could remove
these dead check.
2. Check ret of last request instead of errors
If list is empty, we only need to explicitly commit_rqs
if error happens at last request which is stored in ret. So check
ret of last request instead of errors to remove unnecessary
commit_rqs triggered by errors returned from previous request.
Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-mq.c')
| -rw-r--r-- | block/blk-mq.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index a032d7243c67..07256cdb3d2d 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -2108,9 +2108,9 @@ out: /* If we didn't flush the entire list, we could have told the driver * there was more coming, but that turned out to be a lie. */ - if ((!list_empty(list) || errors || needs_resource || - ret == BLK_STS_DEV_RESOURCE) && q->mq_ops->commit_rqs && queued) - q->mq_ops->commit_rqs(hctx); + if (!list_empty(list) || ret != BLK_STS_OK) + blk_mq_commit_rqs(hctx, queued, false); + /* * Any items that need requeuing? Stuff them into hctx->dispatch, * that is where we will continue on next queue run. |