memcg: bad page if page_cgroup when free

[linux-2.6-omap-h63xx.git] / include / linux / memcontrol.h

diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 9815951ec995d43f02ad87ce78f1c0fbf5ecdb2b..70789df7dab429c2fb4056793c53a7b3580a5e65 100644 (file)
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -20,26 +20,24 @@
 #ifndef _LINUX_MEMCONTROL_H
 #define _LINUX_MEMCONTROL_H
 
-#include <linux/rcupdate.h>
-#include <linux/mm.h>
-
 struct mem_cgroup;
 struct page_cgroup;
 struct page;
 struct mm_struct;
 
-#ifdef CONFIG_CGROUP_MEM_CONT
+#ifdef CONFIG_CGROUP_MEM_RES_CTLR
 
 extern void mm_init_cgroup(struct mm_struct *mm, struct task_struct *p);
 extern void mm_free_cgroup(struct mm_struct *mm);
-extern void page_assign_page_cgroup(struct page *page,
-                                       struct page_cgroup *pc);
+
+#define page_reset_bad_cgroup(page)    ((page)->page_cgroup = 0)
+
 extern struct page_cgroup *page_get_page_cgroup(struct page *page);
 extern int mem_cgroup_charge(struct page *page, struct mm_struct *mm,
                                gfp_t gfp_mask);
 extern void mem_cgroup_uncharge(struct page_cgroup *pc);
 extern void mem_cgroup_uncharge_page(struct page *page);
-extern void mem_cgroup_move_lists(struct page_cgroup *pc, bool active);
+extern void mem_cgroup_move_lists(struct page *page, bool active);
 extern unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan,
                                        struct list_head *dst,
                                        unsigned long *scanned, int order,
@@ -51,10 +49,8 @@ extern int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm,
                                        gfp_t gfp_mask);
 int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *mem);
 
-static inline struct mem_cgroup *mm_cgroup(const struct mm_struct *mm)
-{
-       return rcu_dereference(mm->mem_cgroup);
-}
+#define mm_match_cgroup(mm, cgroup)    \
+       ((cgroup) == rcu_dereference((mm)->mem_cgroup))
 
 extern int mem_cgroup_prepare_migration(struct page *page);
 extern void mem_cgroup_end_migration(struct page *page);
@@ -77,7 +73,7 @@ extern long mem_cgroup_calc_reclaim_active(struct mem_cgroup *mem,
 extern long mem_cgroup_calc_reclaim_inactive(struct mem_cgroup *mem,
                                struct zone *zone, int priority);
 
-#else /* CONFIG_CGROUP_MEM_CONT */
+#else /* CONFIG_CGROUP_MEM_RES_CTLR */
 static inline void mm_init_cgroup(struct mm_struct *mm,
                                        struct task_struct *p)
 {
@@ -87,8 +83,7 @@ static inline void mm_free_cgroup(struct mm_struct *mm)
 {
 }
 
-static inline void page_assign_page_cgroup(struct page *page,
-                                               struct page_cgroup *pc)
+static inline void page_reset_bad_cgroup(struct page *page)
 {
 }
 
@@ -111,8 +106,7 @@ static inline void mem_cgroup_uncharge_page(struct page *page)
 {
 }
 
-static inline void mem_cgroup_move_lists(struct page_cgroup *pc,
-                                               bool active)
+static inline void mem_cgroup_move_lists(struct page *page, bool active)
 {
 }
 
@@ -123,9 +117,9 @@ static inline int mem_cgroup_cache_charge(struct page *page,
        return 0;
 }
 
-static inline struct mem_cgroup *mm_cgroup(const struct mm_struct *mm)
+static inline int mm_match_cgroup(struct mm_struct *mm, struct mem_cgroup *mem)
 {
-       return NULL;
+       return 1;
 }
 
 static inline int task_in_mem_cgroup(struct task_struct *task,