On the default hierarchy, all memory consumption will be accounted
together and controlled by the same set of limits. Always enable
kmemcg on the default hierarchy.
Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
---
mm/memcontrol.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index c94b686..8a5dd01 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -4362,6 +4362,13 @@ mem_cgroup_css_online(struct cgroup_subsys_state *css)
if (ret)
return ret;
+ /* kmem is always accounted together on the default hierarchy */
+ if (cgroup_on_dfl(css->cgroup)) {
+ ret = memcg_activate_kmem(memcg, PAGE_COUNTER_MAX);
+ if (ret)
+ return ret;
+ }
+
/*
* Make sure the memcg is initialized: mem_cgroup_iter()
* orders reading memcg->initialized against its callers
--
2.4.3
--
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