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| author | Yu Kuai <yukuai3@huawei.com> | 2022-01-26 09:21:32 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-01-26 06:34:41 -0700 |
| commit | 592ee1197f78b30bd60c87db9b6c8c045c8d8314 (patch) | |
| tree | 2903dc5ef15fd9f447b3445e4b2e98be24c587c9 /block | |
| parent | 83114df32ae779df57e0af99a8ba6c3968b2ba3d (diff) | |
| download | linux-592ee1197f78b30bd60c87db9b6c8c045c8d8314.tar.gz | |
blk-mq: fix missing blk_account_io_done() in error path
If blk_mq_request_issue_directly() failed from blk_insert_cloned_request(), the request will be accounted start. Currently, blk_insert_cloned_request() is only called by dm, and such request won't be accounted done by dm. In normal path, io will be accounted start from blk_mq_bio_to_request(), when the request is allocated, and such io will be accounted done from __blk_mq_end_request_acct() whether it succeeded or failed. Thus add blk_account_io_done() to fix the problem. Signed-off-by: Yu Kuai <yukuai3@huawei.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20220126012132.3111551-1-yukuai3@huawei.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-mq.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index f3bf3358a3bb..1adfe4824ef5 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -2922,6 +2922,8 @@ blk_status_t blk_insert_cloned_request(struct request_queue *q, struct request * */ blk_mq_run_dispatch_ops(rq->q, ret = blk_mq_request_issue_directly(rq, true)); + if (ret) + blk_account_io_done(rq, ktime_get_ns()); return ret; } EXPORT_SYMBOL_GPL(blk_insert_cloned_request); |