tree 2903dc5ef15fd9f447b3445e4b2e98be24c587c9
parent 83114df32ae779df57e0af99a8ba6c3968b2ba3d
author Yu Kuai <yukuai3@huawei.com> 1643160092 +0800
committer Jens Axboe <axboe@kernel.dk> 1643204081 -0700

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>