[PATCH] memcg updates (2008/12/16)

[KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>]

This is just for dumping my queue and sharing what is planned.

Including Paul Menage's "RFC" patches (because my patches uses them.)

Some are new and others are not. All are against mmotm-Dec-15.

[1/9] Bug fix for mem_cgroup_create() error path and simplify refcnt handling.
      (maybe it's better to divide this into bugfix and clean up.)
[2/9] Paul Menage's cgroup_hierarchy_mutex()
[3/9] Paul Menage's hierarchy_mutex_in_memcg
[4/9] Paul Menage's css_tryget()
[5/9] Add css_is_removed()
[6/9] Use css_tryget() in memcg to remove memcg->obsolete
[7/9] Add css_id support.
      A new implementation of cgroup ID I posted. IDs are per-CSS.
[8/9] Recalim memory in hierarchy withoug mutex of cgroups.
      Recalim memory in round-robin under hierarchy by CSS ID.
[9/9] Fix OOM killer bug under hierarchy.
      Current memcg' oom-killer is broken under hierarchy. This is a fix.

I wonder I have to keep 6-9 in my queue until the next year.
(2-5 aren't under my control.)

Piled up patches from memcg onto mmotm seems like a card tower ;)
So, I don't want to be aggressive.
If anyone interested in, fix 9/9 without 2-8.

Thanks,
-Kame

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