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-rw-r--r--mm/memcontrol.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index d8cd6c39eca5..55c010a58535 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -422,6 +422,19 @@ unlock:
mutex_unlock(&memcg_shrinker_map_mutex);
return ret;
}
+
+void memcg_set_shrinker_bit(struct mem_cgroup *memcg, int nid, int shrinker_id)
+{
+ if (shrinker_id >= 0 && memcg && !mem_cgroup_is_root(memcg)) {
+ struct memcg_shrinker_map *map;
+
+ rcu_read_lock();
+ map = rcu_dereference(memcg->nodeinfo[nid]->shrinker_map);
+ set_bit(shrinker_id, map->map);
+ rcu_read_unlock();
+ }
+}
+
#else /* CONFIG_MEMCG_KMEM */
static int memcg_alloc_shrinker_maps(struct mem_cgroup *memcg)
{