[PATCH v2 0/8] memcg, cgroup: kill css_id

[Li Zefan]

This patchset converts memcg to use cgroup->id, and then we can remove
cgroup css_id.

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

The patchset is based on Tejun's cgroup tree.

Li Zefan (8):
      cgroup: convert cgroup_ida to cgroup_idr
      cgroup: document how cgroup IDs are assigned
      cgroup: implement cgroup_from_id()
      memcg: convert to use cgroup_is_descendant()
      memcg: convert to use cgroup id
      memcg: fail to create cgroup if the cgroup id is too big
      memcg: stop using css id
      cgroup: kill css_id
--
 include/linux/cgroup.h |  49 ++-------
 kernel/cgroup.c        | 308 ++++++++-----------------------------------------------
 mm/memcontrol.c        |  59 ++++++-----
 3 files changed, 90 insertions(+), 326 deletions(-)
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