On Fri, Apr 9, 2021 at 5:32 AM Muchun Song <songmuc...@bytedance.com> wrote: > > When mm is NULL, we do not need to hold rcu lock and call css_tryget for > the root memcg. And we also do not need to check !mm in every loop of > while. So bail out early when !mm. > > Signed-off-by: Muchun Song <songmuc...@bytedance.com> > Acked-by: Johannes Weiner <han...@cmpxchg.org>
Reviewed-by: Shakeel Butt <shake...@google.com>
