[PATCH 0/8] memcg, cgroup: kill css_id

[Li Zefan <lizefan-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>]

(This patchset depends on "memcg: make memcg's life cycle the same as cgroup")

This patchset converts memcg to always use cgroup->id, and then kills
css_id.

As we've removed memcg's own refcnt, converting memcg to use cgroup->id
is very straight-forward.

Li Zefan (8):
      cgroup: implement cgroup_is_ancestor()
      cgroup: implement cgroup_from_id()
      memcg: convert to use cgroup_is_ancestor()
      memcg: convert to use cgroup_from_id()
      memcg: convert to use cgroup->id
      memcg: fail to create cgroup if the cgroup id is too big
      memcg: don't use css_id any more
      cgroup: kill css_id

--
 include/linux/cgroup.h |  44 ++-------
 kernel/cgroup.c        | 302 +++++++++-----------------------------------------------------
 mm/memcontrol.c        |  53 ++++++-----
 3 files changed, 77 insertions(+), 322 deletions(-)