[PATCH 2/2] memcg: remove unused mod_memcg_page_state()

[Sang-Heon Jeon]

Since commit c466412c73c3 ("mm: memcontrol: switch to native NR_VMALLOC
vmstat counter"), mod_memcg_page_state() has no callers.

So remove it.

No functional change.

Signed-off-by: Sang-Heon Jeon <ekffu200098@xxxxxxxxx>
---
 include/linux/memcontrol.h | 20 --------------------
 1 file changed, 20 deletions(-)

diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index b57a74617b0b..c0557e1e3d21 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -949,21 +949,6 @@ void mem_cgroup_print_oom_group(struct mem_cgroup *memcg);
 void mod_memcg_state(struct mem_cgroup *memcg,
 		     enum memcg_stat_item idx, int val);
 
-static inline void mod_memcg_page_state(const struct page *page,
-					enum memcg_stat_item idx, int val)
-{
-	struct mem_cgroup *memcg;
-
-	if (mem_cgroup_disabled())
-		return;
-
-	rcu_read_lock();
-	memcg = folio_memcg(page_folio(page));
-	if (memcg)
-		mod_memcg_state(memcg, idx, val);
-	rcu_read_unlock();
-}
-
 unsigned long memcg_events(const struct mem_cgroup *memcg, int event);
 unsigned long memcg_page_state(const struct mem_cgroup *memcg, int idx);
 unsigned long memcg_page_state_output(const struct mem_cgroup *memcg, int item);
@@ -1396,11 +1381,6 @@ static inline void mod_memcg_state(struct mem_cgroup *memcg,
 {
 }
 
-static inline void mod_memcg_page_state(const struct page *page,
-					enum memcg_stat_item idx, int val)
-{
-}
-
 static inline unsigned long memcg_page_state(const struct mem_cgroup *memcg, int idx)
 {
 	return 0;
-- 
2.43.0