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[PATCH v2 0/6] mm: workingset: make shadow node shrinker memcg aware

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Hi,

Workingset code was recently made memcg aware, but shadow node shrinker
is still global. As a result, one small cgroup can consume all memory
available for shadow nodes, possibly hurting other cgroups by reclaiming
their shadow nodes, even though reclaim distances stored in its shadow
nodes have no effect. To avoid this, we need to make shadow node
shrinker memcg aware.

The actual work is done in patch 6 of the series. Patches 1 and 2
prepare memcg/shrinker infrastructure for the change. Patch 3 is just a
collateral cleanup. Patch 4 makes radix_tree_node accounted, which is
necessary for making shadow node shrinker memcg aware. Patch 5 reduces
shadow nodes overhead in case workload mostly uses anonymous pages.

Changes in v2:
 - Use (FILE_ACTIVE+FILE_INACTIVE)/2 instead of FILE_ACTIVE for maximal
   refault distance (Johannes).

Thanks,

Vladimir Davydov (6):
  mm: memcontrol: enable kmem accounting for all cgroups in the legacy
    hierarchy
  mm: vmscan: pass root_mem_cgroup instead of NULL to memcg aware
    shrinker
  mm: memcontrol: zap memcg_kmem_online helper
  radix-tree: account radix_tree_node to memory cgroup
  mm: workingset: size shadow nodes lru basing on file cache size
  mm: workingset: make shadow node shrinker memcg aware

 include/linux/memcontrol.h | 20 +++++++++----------
 lib/radix-tree.c           | 16 +++++++++++++---
 mm/memcontrol.c            | 48 ++++++++--------------------------------------
 mm/slab_common.c           |  2 +-
 mm/vmscan.c                | 15 ++++++++++-----
 mm/workingset.c            | 10 ++++++++--
 6 files changed, 50 insertions(+), 61 deletions(-)

-- 
2.1.4

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[PATCH v2 0/6] mm: workingset: make shadow node shrinker memcg aware Vladimir Davydov <vdavydov@virtuozzo.com> - 2016-02-09 15:00 +0100
  [PATCH v2 4/6] radix-tree: account radix_tree_node to memory cgroup Vladimir Davydov <vdavydov@virtuozzo.com> - 2016-02-09 15:00 +0100
  [PATCH v2 5/6] mm: workingset: size shadow nodes lru basing on file cache size Vladimir Davydov <vdavydov@virtuozzo.com> - 2016-02-09 15:00 +0100
    Re: [PATCH v2 5/6] mm: workingset: size shadow nodes lru basing on  file cache size Johannes Weiner <hannes@cmpxchg.org> - 2016-02-10 00:20 +0100
  [PATCH v2 2/6] mm: vmscan: pass root_mem_cgroup instead of NULL to memcg aware shrinker Vladimir Davydov <vdavydov@virtuozzo.com> - 2016-02-09 15:00 +0100
  [PATCH v2 3/6] mm: memcontrol: zap memcg_kmem_online helper Vladimir Davydov <vdavydov@virtuozzo.com> - 2016-02-09 15:00 +0100
  [PATCH v2 1/6] mm: memcontrol: enable kmem accounting for all cgroups in the legacy hierarchy Vladimir Davydov <vdavydov@virtuozzo.com> - 2016-02-09 15:00 +0100

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