memcg: reparent list_lrus and free kmemcg_id on css offline

[cascardo/linux.git] / include / linux / list_lru.h

diff --git a/include/linux/list_lru.h b/include/linux/list_lru.h
index 7edf9c9..2a6b994 100644 (file)
--- a/include/linux/list_lru.h
+++ b/include/linux/list_lru.h
@@ -26,7 +26,7 @@ enum lru_status {
 
 struct list_lru_one {
        struct list_head        list;
-       /* kept as signed so we can catch imbalance bugs */
+       /* may become negative during memcg reparenting */
        long                    nr_items;
 };
 
@@ -62,6 +62,7 @@ int __list_lru_init(struct list_lru *lru, bool memcg_aware,
 #define list_lru_init_memcg(lru)       __list_lru_init((lru), true, NULL)
 
 int memcg_update_all_list_lrus(int num_memcgs);
+void memcg_drain_all_list_lrus(int src_idx, int dst_idx);
 
 /**
  * list_lru_add: add an element to the lru list's tail