[PATCH V2 01/13] block: declare blkcg_[init|exit]_queue in private header

[Ming Lei <ming.lei@xxxxxxxxxx>]

Both two functions are used by block core code only, so move the
declaration into private header of block layer.

Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx>
---
 block/blk.h                | 8 ++++++++
 include/linux/blk-cgroup.h | 4 ----
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/block/blk.h b/block/blk.h
index 8bd43b3ad33d..7b0f12260ae6 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -406,6 +406,14 @@ extern int blk_iolatency_init(struct request_queue *q);
 static inline int blk_iolatency_init(struct request_queue *q) { return 0; }
 #endif
 
+#ifdef CONFIG_BLK_CGROUP
+int blkcg_init_queue(struct request_queue *q);
+void blkcg_exit_queue(struct request_queue *q);
+#else
+static inline int blkcg_init_queue(struct request_queue *q) { return 0; }
+static inline void blkcg_exit_queue(struct request_queue *q) { }
+#endif
+
 struct bio *blk_next_bio(struct bio *bio, unsigned int nr_pages, gfp_t gfp);
 
 #ifdef CONFIG_BLK_DEV_ZONED
diff --git a/include/linux/blk-cgroup.h b/include/linux/blk-cgroup.h
index b4de2010fba5..d9dcd18d77f4 100644
--- a/include/linux/blk-cgroup.h
+++ b/include/linux/blk-cgroup.h
@@ -182,8 +182,6 @@ extern bool blkcg_debug_stats;
 
 struct blkcg_gq *blkg_lookup_slowpath(struct blkcg *blkcg,
 				      struct request_queue *q, bool update_hint);
-int blkcg_init_queue(struct request_queue *q);
-void blkcg_exit_queue(struct request_queue *q);
 
 /* Blkio controller policy registration */
 int blkcg_policy_register(struct blkcg_policy *pol);
@@ -637,8 +635,6 @@ static inline void blkcg_schedule_throttle(struct request_queue *q, bool use_mem
 static inline struct blkcg_gq *blkg_lookup(struct blkcg *blkcg, void *key) { return NULL; }
 static inline struct blkcg_gq *blk_queue_root_blkg(struct request_queue *q)
 { return NULL; }
-static inline int blkcg_init_queue(struct request_queue *q) { return 0; }
-static inline void blkcg_exit_queue(struct request_queue *q) { }
 static inline int blkcg_policy_register(struct blkcg_policy *pol) { return 0; }
 static inline void blkcg_policy_unregister(struct blkcg_policy *pol) { }
 static inline int blkcg_activate_policy(struct request_queue *q,
-- 
2.31.1