NVMe needs this function to decide if one request to be aborted has
been completed in normal IO path already.
So introduce it.
Cc: Max Gurtovoy <maxg@xxxxxxxxxxxx>
Cc: Sagi Grimberg <sagi@xxxxxxxxxxx>
Cc: Keith Busch <keith.busch@xxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx>
---
block/blk-mq.c | 6 ++++++
include/linux/blk-mq.h | 1 +
2 files changed, 7 insertions(+)
diff --git a/block/blk-mq.c b/block/blk-mq.c
index b038ec680e84..e1d0b4567388 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -665,6 +665,12 @@ int blk_mq_request_started(struct request *rq)
}
EXPORT_SYMBOL_GPL(blk_mq_request_started);
+int blk_mq_request_completed(struct request *rq)
+{
+ return blk_mq_rq_state(rq) == MQ_RQ_COMPLETE;
+}
+EXPORT_SYMBOL_GPL(blk_mq_request_completed);
+
void blk_mq_start_request(struct request *rq)
{
struct request_queue *q = rq->q;
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index 3fa1fa59f9b2..baac2926e54a 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -296,6 +296,7 @@ static inline u16 blk_mq_unique_tag_to_tag(u32 unique_tag)
int blk_mq_request_started(struct request *rq);
+int blk_mq_request_completed(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);
--
2.20.1
