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blk-mq: introduce blk_mq_set_request_complete

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nvme drivers need to set the state of request to MQ_RQ_COMPLETE when
directly complete request in queue_rq.
So add blk_mq_set_request_complete.

Signed-off-by: Chao Leng <lengchao@huawei.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Chao Leng
2021-02-01 11:49:38 +08:00
committed by Christoph Hellwig
parent f720a8edbc
commit 83fba8c811
1 changed files with 12 additions and 0 deletions
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12
include/linux/blk-mq.h
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@@ -490,6 +490,18 @@ static inline int blk_mq_request_completed(struct request *rq)
return blk_mq_rq_state(rq) == MQ_RQ_COMPLETE; return blk_mq_rq_state(rq) == MQ_RQ_COMPLETE;
} }
/*
*
* Set the state to complete when completing a request from inside ->queue_rq.
* This is used by drivers that want to ensure special complete actions that
* need access to the request are called on failure, e.g. by nvme for
* multipathing.
*/
static inline void blk_mq_set_request_complete(struct request *rq)
{
WRITE_ONCE(rq->state, MQ_RQ_COMPLETE);
}
void blk_mq_start_request(struct request *rq); void blk_mq_start_request(struct request *rq);
void blk_mq_end_request(struct request *rq, blk_status_t error); void blk_mq_end_request(struct request *rq, blk_status_t error);
void __blk_mq_end_request(struct request *rq, blk_status_t error); void __blk_mq_end_request(struct request *rq, blk_status_t error);