1 files changed, 19 insertions, 0 deletions

diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index affd5b19b86c..b96600786913 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -39,6 +39,16 @@ extern unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan,
                                         struct mem_cgroup *mem_cont,
                                         int active, int file);
 
+struct memcg_scanrecord {
+        struct mem_cgroup *mem; /* scanend memory cgroup */
+        struct mem_cgroup *root; /* scan target hierarchy root */
+        int context;            /* scanning context (see memcontrol.c) */
+        unsigned long nr_scanned[2]; /* the number of scanned pages */
+        unsigned long nr_rotated[2]; /* the number of rotated pages */
+        unsigned long nr_freed[2]; /* the number of freed pages */
+        unsigned long elapsed; /* nsec of time elapsed while scanning */
+};
+
 #ifdef CONFIG_CGROUP_MEM_RES_CTLR
 /*
  * All "charge" functions with gfp_mask should use GFP_KERNEL or
@@ -119,6 +129,15 @@ mem_cgroup_get_reclaim_stat_from_page(struct page *page);
 extern void mem_cgroup_print_oom_info(struct mem_cgroup *memcg,
                                         struct task_struct *p);
 
+extern unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *mem,
+                                                  gfp_t gfp_mask, bool noswap,
+                                                  struct memcg_scanrecord *rec);
+extern unsigned long mem_cgroup_shrink_node_zone(struct mem_cgroup *mem,
+                                                gfp_t gfp_mask, bool noswap,
+                                                struct zone *zone,
+                                                struct memcg_scanrecord *rec,
+                                                unsigned long *nr_scanned);
+
 #ifdef CONFIG_CGROUP_MEM_RES_CTLR_SWAP
 extern int do_swap_account;
 #endif