3 files changed, 38 insertions, 0 deletions

diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index f5b47efab48b..9c3c1c97c197 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -32,6 +32,13 @@ extern void page_assign_page_cgroup(struct page *page,
 extern struct page_cgroup *page_get_page_cgroup(struct page *page);
 extern int mem_cgroup_charge(struct page *page, struct mm_struct *mm);
 extern void mem_cgroup_uncharge(struct page_cgroup *pc);
+extern void mem_cgroup_move_lists(struct page_cgroup *pc, bool active);
+extern unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan,
+                                        struct list_head *dst,
+                                        unsigned long *scanned, int order,
+                                        int mode, struct zone *z,
+                                        struct mem_cgroup *mem_cont,
+                                        int active);
 
 static inline void mem_cgroup_uncharge_page(struct page *page)
 {
@@ -71,6 +78,11 @@ static inline void mem_cgroup_uncharge_page(struct page *page)
 {
 }
 
+static inline void mem_cgroup_move_lists(struct page_cgroup *pc,
+                                                bool active)
+{
+}
+
 #endif /* CONFIG_CGROUP_MEM_CONT */
 
 #endif /* _LINUX_MEMCONTROL_H */
diff --git a/include/linux/res_counter.h b/include/linux/res_counter.h
index eeb3f7749772..5e60a4f34243 100644
--- a/include/linux/res_counter.h
+++ b/include/linux/res_counter.h
@@ -99,4 +99,27 @@ int res_counter_charge(struct res_counter *counter, unsigned long val);
 void res_counter_uncharge_locked(struct res_counter *counter, unsigned long val);
 void res_counter_uncharge(struct res_counter *counter, unsigned long val);
 
+static inline bool res_counter_limit_check_locked(struct res_counter *cnt)
+{
+        if (cnt->usage < cnt->limit)
+                return true;
+
+        return false;
+}
+
+/*
+ * Helper function to detect if the cgroup is within it's limit or
+ * not. It's currently called from cgroup_rss_prepare()
+ */
+static inline bool res_counter_check_under_limit(struct res_counter *cnt)
+{
+        bool ret;
+        unsigned long flags;
+
+        spin_lock_irqsave(&cnt->lock, flags);
+        ret = res_counter_limit_check_locked(cnt);
+        spin_unlock_irqrestore(&cnt->lock, flags);
+        return ret;
+}
+
 #endif
diff --git a/include/linux/swap.h b/include/linux/swap.h
index 353153ea0bd5..4d91bc0e0fd5 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -5,6 +5,7 @@
 #include <linux/linkage.h>
 #include <linux/mmzone.h>
 #include <linux/list.h>
+#include <linux/memcontrol.h>
 #include <linux/sched.h>
 
 #include <asm/atomic.h>
@@ -182,6 +183,8 @@ extern void swap_setup(void);
 /* linux/mm/vmscan.c */
 extern unsigned long try_to_free_pages(struct zone **zones, int order,
                                         gfp_t gfp_mask);
+extern unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *mem);
+extern int __isolate_lru_page(struct page *page, int mode);
 extern unsigned long shrink_all_memory(unsigned long nr_pages);
 extern int vm_swappiness;
 extern int remove_mapping(struct address_space *mapping, struct page *page);