[PATCH 1/2] memcg: remove unused page_memcg_check()

[Sang-Heon Jeon]

Since commit 90f095b816e2 ("mm/page_owner: use memcg_data snapshot to
avoid TOCTOU in print_page_owner_memcg()"), page_memcg_check() has no
callers.

So remove it.

No functional change.

Signed-off-by: Sang-Heon Jeon <ekffu200098@xxxxxxxxx>
---
 include/linux/memcontrol.h | 12 ------------
 1 file changed, 12 deletions(-)

diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 64c183be8cbf..b57a74617b0b 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -498,13 +498,6 @@ static inline struct mem_cgroup *folio_memcg_check(const struct folio *folio)
 	return obj_cgroup_memcg(objcg);
 }
 
-static inline struct mem_cgroup *page_memcg_check(const struct page *page)
-{
-	if (PageTail(page))
-		return NULL;
-	return folio_memcg_check((const struct folio *)page);
-}
-
 static inline struct mem_cgroup *get_mem_cgroup_from_objcg(const struct obj_cgroup *objcg)
 {
 	struct mem_cgroup *memcg;
@@ -1100,11 +1093,6 @@ static inline struct mem_cgroup *folio_memcg_check(const struct folio *folio)
 	return NULL;
 }
 
-static inline struct mem_cgroup *page_memcg_check(const struct page *page)
-{
-	return NULL;
-}
-
 static inline struct mem_cgroup *get_mem_cgroup_from_objcg(const struct obj_cgroup *objcg)
 {
 	return NULL;
-- 
2.43.0