[PATCHSET] memcg: improve high limit behavior and always enable kmemcg on dfl hier

[Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>]

Hello,

This patchset contains the following four patches.

 0001-memcg-fix-over-high-reclaim-amount.patch
 0002-memcg-flatten-task_struct-memcg_oom.patch
 0003-memcg-punt-high-overage-reclaim-to-return-to-userlan.patch
 0004-memcg-always-enable-kmemcg-on-the-default-hierarchy.patch

0001-0002 are simple fix and prep patches.  0003 makes memcg alwyas
punt direct reclaim of high limit overages to return-to-user path.
0004 always enables kmemcg on the default hierarchy.

This patchset is on top of next/akpm 1f3bd508da15
("drivers/w1/w1_int.c: call put_device if device_register fails") and
also available in the following git branch.

 git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git review-memcg-dfl

diffstat follows.  Thanks.

 include/linux/memcontrol.h |   16 +++++---
 include/linux/sched.h      |   14 +++----
 include/linux/tracehook.h  |    3 +
 mm/memcontrol.c            |   88 +++++++++++++++++++++++++++++++++++----------
 4 files changed, 91 insertions(+), 30 deletions(-)

--
tejun