[PATCH 0/12][V2] memcg: make memcg's life cycle the same as cgroup

Changes since v1: - wrote better changelog and added acked-by and reviewed-by tags - revised some comments as suggested by Michal - added a wmb() in kmem_cgroup_css_offline(), pointed out by Michal - fixed a bug which causes a css_put() never be called Now memcg has its own refcnt, so when a

[PATCH 0/12][V2] memcg: make memcg's life cycle the same as cgroup

Changes since v1: - wrote better changelog and added acked-by and reviewed-by tags - revised some comments as suggested by Michal - added a wmb() in kmem_cgroup_css_offline(), pointed out by Michal - fixed a bug which causes a css_put() never be called Now memcg has its own refcnt, so when a