1 files changed, 5 insertions, 1 deletions

diff --git a/include/linux/shrinker.h b/include/linux/shrinker.h
index f4aee75f00b1..4fcacd915d45 100644
--- a/include/linux/shrinker.h
+++ b/include/linux/shrinker.h
@@ -20,6 +20,9 @@ struct shrink_control {
 
         /* current node being shrunk (for NUMA aware shrinkers) */
         int nid;
+
+        /* current memcg being shrunk (for memcg aware shrinkers) */
+        struct mem_cgroup *memcg;
 };
 
 #define SHRINK_STOP (~0UL)
@@ -61,7 +64,8 @@ struct shrinker {
 #define DEFAULT_SEEKS 2 /* A good number if you don't know better. */
 
 /* Flags */
-#define SHRINKER_NUMA_AWARE (1 << 0)
+#define SHRINKER_NUMA_AWARE     (1 << 0)
+#define SHRINKER_MEMCG_AWARE    (1 << 1)
 
 extern int register_shrinker(struct shrinker *);
 extern void unregister_shrinker(struct shrinker *);