[PATCH v5 2/5] memcg: convert to use cgroup id

Use cgroup id instead of css id. This is a preparation to kill css id. Note, as memcg treat 0 as an invalid id, while cgroup id starts with 0, we define memcg_id == cgroup_id + 1. Signed-off-by: Li Zefan Acked-by: Michal Hocko --- mm/memcontrol.c | 34 -- 1

[PATCH v5 2/5] memcg: convert to use cgroup id

Use cgroup id instead of css id. This is a preparation to kill css id. Note, as memcg treat 0 as an invalid id, while cgroup id starts with 0, we define memcg_id == cgroup_id + 1. Signed-off-by: Li Zefan lize...@huawei.com Acked-by: Michal Hocko mho...@suse.cz --- mm/memcontrol.c | 34