diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h
index 864fad4a850b..b9e3265c1eb3 100644
--- a/block/blk-cgroup.h
+++ b/block/blk-cgroup.h
@@ -485,7 +485,6 @@ static inline void blkcg_deactivate_policy(struct gendisk *disk,
 static inline struct blkg_policy_data *blkg_to_pd(struct blkcg_gq *blkg,
 						  struct blkcg_policy *pol) { return NULL; }
 static inline struct blkcg_gq *pd_to_blkg(struct blkg_policy_data *pd) { return NULL; }
-static inline char *blkg_path(struct blkcg_gq *blkg) { return NULL; }
 static inline void blkg_get(struct blkcg_gq *blkg) { }
 static inline void blkg_put(struct blkcg_gq *blkg) { }
 static inline void blkcg_bio_issue_init(struct bio *bio) { }