On Thu, 12 Mar 2020 16:41:37 +0000 Chris Down <chris@xxxxxxxxxxxxxx> wrote: > The root of the hierarchy cannot have high set, so we will never reclaim > based on it. This makes that clearer and avoids another entry. > > ... > > --- a/mm/memcontrol.c > +++ b/mm/memcontrol.c > @@ -2232,7 +2232,8 @@ static void reclaim_high(struct mem_cgroup *memcg, > continue; > memcg_memory_event(memcg, MEMCG_HIGH); > try_to_free_mem_cgroup_pages(memcg, nr_pages, gfp_mask, true); > - } while ((memcg = parent_mem_cgroup(memcg))); > + } while ((memcg = parent_mem_cgroup(memcg)) && > + !mem_cgroup_is_root(memcg)); > } > > static void high_work_func(struct work_struct *work) Does someone have time to review this one? Thanks.
