On Tue, Jan 25, 2022 at 08:26:54PM +0800, Yu Kuai wrote: > 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. The patch looks good, but the subject is incorrect, this is not in dm-mpath but in the block layer.
