[PATCH -mm 0/8] memcg: reparent kmem on css offline

Vladimir Davydov
2014-07-07T12:00:30Z

Hi,

This patch set introduces re-parenting of kmem charges on memcg css
offline. The idea lying behind it is very simple - instead of pointing
from kmem objects (kmem caches, non-slab kmem pages) directly to the
memcg which they are charged against, we make them point to a proxy
object, mem_cgroup_kmem_context, which, in turn, points to the memcg
which it belongs to. As a result on memcg offline, it's enough to only
re-parent the memcg's mem_cgroup_kmem_context.

Note, reparented kmem contexts will hang around until there is at least
one object accounted to them, but since they are small (especially
comparing to struct mem_cgroup), it's no big deal.

Reviews are appreciated.

Thanks,

Vladimir Davydov (8):
memcg: add pointer from memcg_cache_params to owner cache
memcg: keep all children of each root cache on a list
slab: guarantee unique kmem cache naming
slub: remove kmemcg id from create_unique_id
memcg: rework non-slab kmem pages charge path
memcg: introduce kmem context
memcg: move some kmem definitions upper
memcg: reparent kmem context on memcg offline

include/linux/memcontrol.h | 88 ++++-----
include/linux/mm_types.h | 6 +
include/linux/slab.h | 17 +-
mm/memcontrol.c | 468 +++++++++++++++++++++-----------------------
mm/page_alloc.c | 22 ++-
mm/slab.c | 40 ++--
mm/slab_common.c | 64 ++++--
mm/slub.c | 45 ++---
8 files changed, 382 insertions(+), 368 deletions(-)

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1.7.10.4