mm/memcg: remove unused definitions

Some definitions are left unused, just clean them.

Link: https://lkml.kernel.org/r/20201108003834.12669-1-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Reviewed-by: Roman Gushchin <guro@fb.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 08ed57e..196441f 100644 (file)
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -913,41 +913,6 @@ static inline void mod_memcg_state(struct mem_cgroup *memcg,
        local_irq_restore(flags);
 }
 
-/**
- * mod_memcg_page_state - update page state statistics
- * @page: the page
- * @idx: page state item to account
- * @val: number of pages (positive or negative)
- *
- * The @page must be locked or the caller must use lock_page_memcg()
- * to prevent double accounting when the page is concurrently being
- * moved to another memcg:
- *
- *   lock_page(page) or lock_page_memcg(page)
- *   if (TestClearPageState(page))
- *     mod_memcg_page_state(page, state, -1);
- *   unlock_page(page) or unlock_page_memcg(page)
- *
- * Kernel pages are an exception to this, since they'll never move.
- */
-static inline void __mod_memcg_page_state(struct page *page,
-                                         int idx, int val)
-{
-       struct mem_cgroup *memcg = page_memcg(page);
-
-       if (memcg)
-               __mod_memcg_state(memcg, idx, val);
-}
-
-static inline void mod_memcg_page_state(struct page *page,
-                                       int idx, int val)
-{
-       struct mem_cgroup *memcg = page_memcg(page);
-
-       if (memcg)
-               mod_memcg_state(memcg, idx, val);
-}
-
 static inline unsigned long lruvec_page_state(struct lruvec *lruvec,
                                              enum node_stat_item idx)
 {
@@ -1395,18 +1360,6 @@ static inline void mod_memcg_state(struct mem_cgroup *memcg,
 {
 }
 
-static inline void __mod_memcg_page_state(struct page *page,
-                                         int idx,
-                                         int nr)
-{
-}
-
-static inline void mod_memcg_page_state(struct page *page,
-                                       int idx,
-                                       int nr)
-{
-}
-
 static inline unsigned long lruvec_page_state(struct lruvec *lruvec,
                                              enum node_stat_item idx)
 {
@@ -1479,34 +1432,6 @@ static inline void lruvec_memcg_debug(struct lruvec *lruvec, struct page *page)
 }
 #endif /* CONFIG_MEMCG */
 
-/* idx can be of type enum memcg_stat_item or node_stat_item */
-static inline void __inc_memcg_state(struct mem_cgroup *memcg,
-                                    int idx)
-{
-       __mod_memcg_state(memcg, idx, 1);
-}
-
-/* idx can be of type enum memcg_stat_item or node_stat_item */
-static inline void __dec_memcg_state(struct mem_cgroup *memcg,
-                                    int idx)
-{
-       __mod_memcg_state(memcg, idx, -1);
-}
-
-/* idx can be of type enum memcg_stat_item or node_stat_item */
-static inline void __inc_memcg_page_state(struct page *page,
-                                         int idx)
-{
-       __mod_memcg_page_state(page, idx, 1);
-}
-
-/* idx can be of type enum memcg_stat_item or node_stat_item */
-static inline void __dec_memcg_page_state(struct page *page,
-                                         int idx)
-{
-       __mod_memcg_page_state(page, idx, -1);
-}
-
 static inline void __inc_lruvec_kmem_state(void *p, enum node_stat_item idx)
 {
        __mod_lruvec_kmem_state(p, idx, 1);
@@ -1517,34 +1442,6 @@ static inline void __dec_lruvec_kmem_state(void *p, enum node_stat_item idx)
        __mod_lruvec_kmem_state(p, idx, -1);
 }
 
-/* idx can be of type enum memcg_stat_item or node_stat_item */
-static inline void inc_memcg_state(struct mem_cgroup *memcg,
-                                  int idx)
-{
-       mod_memcg_state(memcg, idx, 1);
-}
-
-/* idx can be of type enum memcg_stat_item or node_stat_item */
-static inline void dec_memcg_state(struct mem_cgroup *memcg,
-                                  int idx)
-{
-       mod_memcg_state(memcg, idx, -1);
-}
-
-/* idx can be of type enum memcg_stat_item or node_stat_item */
-static inline void inc_memcg_page_state(struct page *page,
-                                       int idx)
-{
-       mod_memcg_page_state(page, idx, 1);
-}
-
-/* idx can be of type enum memcg_stat_item or node_stat_item */
-static inline void dec_memcg_page_state(struct page *page,
-                                       int idx)
-{
-       mod_memcg_page_state(page, idx, -1);
-}
-
 static inline struct lruvec *parent_lruvec(struct lruvec *lruvec)
 {
        struct mem_cgroup *memcg;
@@ -1733,21 +1630,6 @@ static inline void memcg_kmem_uncharge_page(struct page *page, int order)
                __memcg_kmem_uncharge_page(page, order);
 }
 
-static inline int memcg_kmem_charge(struct mem_cgroup *memcg, gfp_t gfp,
-                                   unsigned int nr_pages)
-{
-       if (memcg_kmem_enabled())
-               return __memcg_kmem_charge(memcg, gfp, nr_pages);
-       return 0;
-}
-
-static inline void memcg_kmem_uncharge(struct mem_cgroup *memcg,
-                                      unsigned int nr_pages)
-{
-       if (memcg_kmem_enabled())
-               __memcg_kmem_uncharge(memcg, nr_pages);
-}
-
 /*
  * A helper for accessing memcg's kmem_id, used for getting
  * corresponding LRU lists.