--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/include/linux/memcontrol.h	Sun Jan 11 20:20:11 2009 +0100
@@ -0,0 +1,158 @@
+/* memcontrol.h - Memory Controller
+ *
+ * Copyright IBM Corporation, 2007
+ * Author Balbir Singh <balbir@linux.vnet.ibm.com>
+ *
+ * Copyright 2007 OpenVZ SWsoft Inc
+ * Author: Pavel Emelianov <xemul@openvz.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _LINUX_MEMCONTROL_H
+#define _LINUX_MEMCONTROL_H
+
+struct mem_cgroup;
+struct page_cgroup;
+struct page;
+struct mm_struct;
+
+#ifdef CONFIG_CGROUP_MEM_RES_CTLR
+
+extern int mem_cgroup_charge(struct page *page, struct mm_struct *mm,
+				gfp_t gfp_mask);
+extern int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm,
+					gfp_t gfp_mask);
+extern void mem_cgroup_move_lists(struct page *page, enum lru_list lru);
+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 mm_struct *mm, gfp_t gfp_mask);
+
+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, int file);
+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 *mem_cgroup_from_task(struct task_struct *p);
+
+#define mm_match_cgroup(mm, cgroup)	\
+	((cgroup) == mem_cgroup_from_task((mm)->owner))
+
+extern int
+mem_cgroup_prepare_migration(struct page *page, struct page *newpage);
+extern void mem_cgroup_end_migration(struct page *page);
+
+/*
+ * For memory reclaim.
+ */
+extern int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem);
+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);
+
+extern long mem_cgroup_calc_reclaim(struct mem_cgroup *mem, struct zone *zone,
+					int priority, enum lru_list lru);
+
+
+#else /* CONFIG_CGROUP_MEM_RES_CTLR */
+static inline int mem_cgroup_charge(struct page *page,
+					struct mm_struct *mm, gfp_t gfp_mask)
+{
+	return 0;
+}
+
+static inline int mem_cgroup_cache_charge(struct page *page,
+					struct mm_struct *mm, gfp_t gfp_mask)
+{
+	return 0;
+}
+
+static inline void mem_cgroup_uncharge_page(struct page *page)
+{
+}
+
+static inline void mem_cgroup_uncharge_cache_page(struct page *page)
+{
+}
+
+static inline int mem_cgroup_shrink_usage(struct mm_struct *mm, gfp_t gfp_mask)
+{
+	return 0;
+}
+
+static inline void mem_cgroup_move_lists(struct page *page, bool active)
+{
+}
+
+static inline int mm_match_cgroup(struct mm_struct *mm, struct mem_cgroup *mem)
+{
+	return 1;
+}
+
+static inline int task_in_mem_cgroup(struct task_struct *task,
+				     const struct mem_cgroup *mem)
+{
+	return 1;
+}
+
+static inline int
+mem_cgroup_prepare_migration(struct page *page, struct page *newpage)
+{
+	return 0;
+}
+
+static inline void mem_cgroup_end_migration(struct page *page)
+{
+}
+
+static inline int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem)
+{
+	return 0;
+}
+
+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;
+}
+
+static inline void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem,
+						int priority)
+{
+}
+
+static inline void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem,
+						int priority)
+{
+}
+
+static inline long mem_cgroup_calc_reclaim(struct mem_cgroup *mem,
+					struct zone *zone, int priority,
+					enum lru_list lru)
+{
+	return 0;
+}
+#endif /* CONFIG_CGROUP_MEM_CONT */
+
+#endif /* _LINUX_MEMCONTROL_H */
+