[Devel] [PATCH rh7 0/3] memcg: implement oomguarpages

[Vladimir Davydov]

This patch set adds memory.oom_guarantee file to memory cgroup which
allows to protect a memory cgroup from OOM killer. It works as follows:
OOM killer first selects from processes in cgroups that are above their
OOM guarantee, and only if there is no such it switches to scanning
processes from all cgroups. This behavior is similar to UB_OOMGUARPAGES.

It also adds OOM kills counter to each memory cgroup and synchronizes
beancounters' UB_OOMGUARPAGES resource with oom_guarantee/oom_kill_cnt
obtained from mem_cgroup.

Related to https://jira.sw.ru/browse/PSBM-20089

Vladimir Davydov (3):
  memcg: add oom_guarantee
  memcg: count oom kills
  memcg: sync UB_OOMGUARPAGES

 include/linux/memcontrol.h |   13 ++++
 include/linux/oom.h        |    2 +-
 mm/memcontrol.c            |  141 ++++++++++++++++++++++++++++++++++++++++++--
 mm/oom_kill.c              |   15 ++++-
 4 files changed, 164 insertions(+), 7 deletions(-)

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1.7.10.4