Merge branch 'core-iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[safe/jmp/linux-2.6] / include / linux / memcontrol.h

diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 4562d09..44301c6 100644 (file)
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -54,9 +54,14 @@ extern void mem_cgroup_rotate_lru_list(struct page *page, enum lru_list lru);
 extern void mem_cgroup_del_lru(struct page *page);
 extern void mem_cgroup_move_lists(struct page *page,
                                  enum lru_list from, enum lru_list to);
+
+/* For coalescing uncharge for reducing memcg' overhead*/
+extern void mem_cgroup_uncharge_start(void);
+extern void mem_cgroup_uncharge_end(void);
+
 extern void mem_cgroup_uncharge_page(struct page *page);
 extern void mem_cgroup_uncharge_cache_page(struct page *page);
-extern int mem_cgroup_shrink_usage(struct page *page,
+extern int mem_cgroup_shmem_charge_fallback(struct page *page,
                        struct mm_struct *mm, gfp_t gfp_mask);
 
 extern unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan,
@@ -68,6 +73,7 @@ extern unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan,
 extern void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask);
 int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *mem);
 
+extern struct mem_cgroup *try_get_mem_cgroup_from_page(struct page *page);
 extern struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p);
 
 static inline
@@ -75,11 +81,13 @@ int mm_match_cgroup(const struct mm_struct *mm, const struct mem_cgroup *cgroup)
 {
        struct mem_cgroup *mem;
        rcu_read_lock();
-       mem = mem_cgroup_from_task((mm)->owner);
+       mem = mem_cgroup_from_task(rcu_dereference((mm)->owner));
        rcu_read_unlock();
        return cgroup == mem;
 }
 
+extern struct cgroup_subsys_state *mem_cgroup_css(struct mem_cgroup *mem);
+
 extern int
 mem_cgroup_prepare_migration(struct page *page, struct mem_cgroup **ptr);
 extern void mem_cgroup_end_migration(struct mem_cgroup *mem,
@@ -88,14 +96,13 @@ extern void mem_cgroup_end_migration(struct mem_cgroup *mem,
 /*
  * For memory reclaim.
  */
-extern long mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem);
-
 extern int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem);
 extern void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem,
                                                        int priority);
 extern void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem,
                                                        int priority);
 int mem_cgroup_inactive_anon_is_low(struct mem_cgroup *memcg);
+int mem_cgroup_inactive_file_is_low(struct mem_cgroup *memcg);
 unsigned long mem_cgroup_zone_nr_pages(struct mem_cgroup *memcg,
                                       struct zone *zone,
                                       enum lru_list lru);
@@ -117,8 +124,10 @@ static inline bool mem_cgroup_disabled(void)
        return false;
 }
 
-extern bool mem_cgroup_oom_called(struct task_struct *task);
-
+void mem_cgroup_update_file_mapped(struct page *page, int val);
+unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order,
+                                               gfp_t gfp_mask, int nid,
+                                               int zid);
 #else /* CONFIG_CGROUP_MEM_RES_CTLR */
 struct mem_cgroup;
 
@@ -149,6 +158,14 @@ static inline void mem_cgroup_cancel_charge_swapin(struct mem_cgroup *ptr)
 {
 }
 
+static inline void mem_cgroup_uncharge_start(void)
+{
+}
+
+static inline void mem_cgroup_uncharge_end(void)
+{
+}
+
 static inline void mem_cgroup_uncharge_page(struct page *page)
 {
 }
@@ -157,7 +174,7 @@ static inline void mem_cgroup_uncharge_cache_page(struct page *page)
 {
 }
 
-static inline int mem_cgroup_shrink_usage(struct page *page,
+static inline int mem_cgroup_shmem_charge_fallback(struct page *page,
                        struct mm_struct *mm, gfp_t gfp_mask)
 {
        return 0;
@@ -187,6 +204,11 @@ mem_cgroup_move_lists(struct page *page, enum lru_list from, enum lru_list to)
 {
 }
 
+static inline struct mem_cgroup *try_get_mem_cgroup_from_page(struct page *page)
+{
+       return NULL;
+}
+
 static inline int mm_match_cgroup(struct mm_struct *mm, struct mem_cgroup *mem)
 {
        return 1;
@@ -198,6 +220,11 @@ static inline int task_in_mem_cgroup(struct task_struct *task,
        return 1;
 }
 
+static inline struct cgroup_subsys_state *mem_cgroup_css(struct mem_cgroup *mem)
+{
+       return NULL;
+}
+
 static inline int
 mem_cgroup_prepare_migration(struct page *page, struct mem_cgroup **ptr)
 {
@@ -210,11 +237,6 @@ static inline void mem_cgroup_end_migration(struct mem_cgroup *mem,
 {
 }
 
-static inline int mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem)
-{
-       return 0;
-}
-
 static inline int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem)
 {
        return 0;
@@ -235,13 +257,14 @@ static inline bool mem_cgroup_disabled(void)
        return true;
 }
 
-static inline bool mem_cgroup_oom_called(struct task_struct *task)
+static inline int
+mem_cgroup_inactive_anon_is_low(struct mem_cgroup *memcg)
 {
-       return false;
+       return 1;
 }
 
 static inline int
-mem_cgroup_inactive_anon_is_low(struct mem_cgroup *memcg)
+mem_cgroup_inactive_file_is_low(struct mem_cgroup *memcg)
 {
        return 1;
 }
@@ -271,6 +294,18 @@ mem_cgroup_print_oom_info(struct mem_cgroup *memcg, struct task_struct *p)
 {
 }
 
+static inline void mem_cgroup_update_file_mapped(struct page *page,
+                                                       int val)
+{
+}
+
+static inline
+unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order,
+                                           gfp_t gfp_mask, int nid, int zid)
+{
+       return 0;
+}
+
 #endif /* CONFIG_CGROUP_MEM_CONT */
 
 #endif /* _LINUX_MEMCONTROL_H */