On Mon 01-08-16 16:26:24, Vladimir Davydov wrote:
[...]
> +static struct mem_cgroup *mem_cgroup_id_get_active(struct mem_cgroup *memcg)
> +{
> + while (!atomic_inc_not_zero(&memcg->id.ref))
> + memcg = parent_mem_cgroup(memcg);
> + return memcg;
> +}Does this actually work properly? Say we have root -> A so parent is NULL if root (use_hierarchy == false). -- Michal Hocko SUSE Labs
