diff --git a/block/blk-core.c b/block/blk-core.c
index 7afe44d09741355f6bdde8d236589ee1c97b1e19..ba3b7ac5b47823c9fe53ce3fb6b95816c65c96e1 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1802,6 +1802,7 @@ bool bio_attempt_back_merge(struct request_queue *q, struct request *req,
 		return false;
 
 	trace_block_bio_backmerge(q, req, bio);
+	rq_qos_merge(req->q, req, bio);
 
 	if ((req->cmd_flags & REQ_FAILFAST_MASK) != ff)
 		blk_rq_set_mixed_merge(req);
@@ -1824,6 +1825,7 @@ bool bio_attempt_front_merge(struct request_queue *q, struct request *req,
 		return false;
 
 	trace_block_bio_frontmerge(q, req, bio);
+	rq_qos_merge(req->q, req, bio);
 
 	if ((req->cmd_flags & REQ_FAILFAST_MASK) != ff)
 		blk_rq_set_mixed_merge(req);
@@ -1850,6 +1852,8 @@ bool bio_attempt_discard_merge(struct request_queue *q, struct request *req,
 	    blk_rq_get_max_sectors(req, blk_rq_pos(req)))
 		goto no_merge;
 
+	rq_qos_merge(q, req, bio);
+
 	req->biotail->bi_next = bio;
 	req->biotail = bio;
 	req->__data_len += bio->bi_iter.bi_size;
diff --git a/block/blk-rq-qos.c b/block/blk-rq-qos.c
index 43bcd4e7a7f9ae5da1fa005b5bca0110e7be9aa9..7600c36f81220f25985ef380bde40dfc381308b0 100644
--- a/block/blk-rq-qos.c
+++ b/block/blk-rq-qos.c
@@ -88,6 +88,17 @@ void rq_qos_track(struct request_queue *q, struct request *rq, struct bio *bio)
 	}
 }
 
+void rq_qos_merge(struct request_queue *q, struct request *rq, struct bio *bio)
+{
+	struct rq_qos *rqos;
+
+	for (rqos = q->rq_qos; rqos; rqos = rqos->next) {
+		if (rqos->ops->merge)
+			rqos->ops->merge(rqos, rq, bio);
+	}
+}
+
+
 void rq_qos_done_bio(struct request_queue *q, struct bio *bio)
 {
 	struct rq_qos *rqos;
diff --git a/block/blk-rq-qos.h b/block/blk-rq-qos.h
index 98caba3e962eeb63bd9bbdc78ce0398d6fa414ca..c4d798543f1a7841cb4409f79f4eed9c740b8f7d 100644
--- a/block/blk-rq-qos.h
+++ b/block/blk-rq-qos.h
@@ -27,6 +27,7 @@ struct rq_qos {
 struct rq_qos_ops {
 	void (*throttle)(struct rq_qos *, struct bio *, spinlock_t *);
 	void (*track)(struct rq_qos *, struct request *, struct bio *);
+	void (*merge)(struct rq_qos *, struct request *, struct bio *);
 	void (*issue)(struct rq_qos *, struct request *);
 	void (*requeue)(struct rq_qos *, struct request *);
 	void (*done)(struct rq_qos *, struct request *);
@@ -102,5 +103,6 @@ void rq_qos_requeue(struct request_queue *, struct request *);
 void rq_qos_done_bio(struct request_queue *q, struct bio *bio);
 void rq_qos_throttle(struct request_queue *, struct bio *, spinlock_t *);
 void rq_qos_track(struct request_queue *q, struct request *, struct bio *);
+void rq_qos_merge(struct request_queue *q, struct request *rq, struct bio *bio);
 void rq_qos_exit(struct request_queue *);
 #endif