diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index fcc8c6b..73e4dba 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -999,19 +999,6 @@ struct bio *blk_map_user_io(struct request_queue *, blk_opf_t,
 int blk_rq_unmap_user(struct bio *);
 void blk_rq_attach_bios(struct request *, struct bio *);
 
-static inline int blk_rq_map_user(struct request_queue *q, struct request *rq,
-		    struct rq_map_data *map_data, void __user *ubuf,
-		    unsigned long len, gfp_t gfp_mask)
-{
-	struct bio *bio = blk_map_user(q, rq->cmd_flags, map_data,
-				       ubuf, len);
-
-	if (IS_ERR(bio))
-		return PTR_ERR(bio);
-	blk_rq_attach_bios(rq, bio);
-	return 0;
-}
-
 static inline bool blk_unmap_would_copy(struct bio *bio)
 {
 	if (!bio || !bio->bi_private)