1 files changed, 17 insertions, 41 deletions

diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 19df5d857411..6b75640ef5ab 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -139,48 +139,23 @@ static inline bool mem_cgroup_disabled(void)
         return false;
 }
 
-void __mem_cgroup_begin_update_page_stat(struct page *page, bool *locked,
-                                         unsigned long *flags);
-
-extern atomic_t memcg_moving;
-
-static inline void mem_cgroup_begin_update_page_stat(struct page *page,
-                                        bool *locked, unsigned long *flags)
-{
-        if (mem_cgroup_disabled())
-                return;
-        rcu_read_lock();
-        *locked = false;
-        if (atomic_read(&memcg_moving))
-                __mem_cgroup_begin_update_page_stat(page, locked, flags);
-}
-
-void __mem_cgroup_end_update_page_stat(struct page *page,
-                                unsigned long *flags);
-static inline void mem_cgroup_end_update_page_stat(struct page *page,
-                                        bool *locked, unsigned long *flags)
-{
-        if (mem_cgroup_disabled())
-                return;
-        if (*locked)
-                __mem_cgroup_end_update_page_stat(page, flags);
-        rcu_read_unlock();
-}
-
-void mem_cgroup_update_page_stat(struct page *page,
-                                 enum mem_cgroup_stat_index idx,
-                                 int val);
-
-static inline void mem_cgroup_inc_page_stat(struct page *page,
+struct mem_cgroup *mem_cgroup_begin_page_stat(struct page *page, bool *locked,
+                                              unsigned long *flags);
+void mem_cgroup_end_page_stat(struct mem_cgroup *memcg, bool locked,
+                              unsigned long flags);
+void mem_cgroup_update_page_stat(struct mem_cgroup *memcg,
+                                 enum mem_cgroup_stat_index idx, int val);
+
+static inline void mem_cgroup_inc_page_stat(struct mem_cgroup *memcg,
                                             enum mem_cgroup_stat_index idx)
 {
-        mem_cgroup_update_page_stat(page, idx, 1);
+        mem_cgroup_update_page_stat(memcg, idx, 1);
 }
 
-static inline void mem_cgroup_dec_page_stat(struct page *page,
+static inline void mem_cgroup_dec_page_stat(struct mem_cgroup *memcg,
                                             enum mem_cgroup_stat_index idx)
 {
-        mem_cgroup_update_page_stat(page, idx, -1);
+        mem_cgroup_update_page_stat(memcg, idx, -1);
 }
 
 unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order,
@@ -315,13 +290,14 @@ mem_cgroup_print_oom_info(struct mem_cgroup *memcg, struct task_struct *p)
 {
 }
 
-static inline void mem_cgroup_begin_update_page_stat(struct page *page,
+static inline struct mem_cgroup *mem_cgroup_begin_page_stat(struct page *page,
                                         bool *locked, unsigned long *flags)
 {
+        return NULL;
 }
 
-static inline void mem_cgroup_end_update_page_stat(struct page *page,
-                                        bool *locked, unsigned long *flags)
+static inline void mem_cgroup_end_page_stat(struct mem_cgroup *memcg,
+                                        bool locked, unsigned long flags)
 {
 }
 
@@ -343,12 +319,12 @@ static inline bool mem_cgroup_oom_synchronize(bool wait)
         return false;
 }
 
-static inline void mem_cgroup_inc_page_stat(struct page *page,
+static inline void mem_cgroup_inc_page_stat(struct mem_cgroup *memcg,
                                             enum mem_cgroup_stat_index idx)
 {
 }
 
-static inline void mem_cgroup_dec_page_stat(struct page *page,
+static inline void mem_cgroup_dec_page_stat(struct mem_cgroup *memcg,
                                             enum mem_cgroup_stat_index idx)
 {
 }