Commit 1eacb342 authored by Yu Kuai's avatar Yu Kuai Committed by Zheng Zengkai
Browse files

blk-mq: fix missing blk_account_io_done() in error path

mainline inclusion
from mainline-v5.15-rc1
commit 89f871af
category: bugfix
bugzilla: https://gitee.com/src-openeuler/kernel/issues/I60HCD
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=89f871af1b26d98d983cba7ed0e86effa45ba5f8



--------------------------------

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: default avatarYu Kuai <yukuai3@huawei.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20220126012132.3111551-1-yukuai3@huawei.com


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>

Conflict:
	block/blk-core.c
Signed-off-by: default avatarYu Kuai <yukuai3@huawei.com>
Reviewed-by: default avatarJason Yan <yanaijie@huawei.com>
Signed-off-by: default avatarZheng Zengkai <zhengzengkai@huawei.com>
parent 23e6f6ff
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