[patch 0/5] mm: memcontrol: eliminate charge reparenting v2

[Johannes Weiner]

Hi,

this series gets rid of charge reparenting at cgroup deletion, which
is possible now that the css can outlive the user-visible cgroup.  Any
cache charges left after cgroup deletion simply remain with their css,
where they continue to get reclaimed during pressure on the parent.

Version 2:

    - remove memcg->dead_count [vladimir]
    - restore iterator generations [vladimir]
    - restore memcg-initialized test [michal]
    - document shared walk lockless magic [michal]
    - split out sync stock draining removal [michal]

 include/linux/cgroup.h          |  26 ++
 include/linux/page_counter.h    |   4 +-
 include/linux/percpu-refcount.h |  47 ++-
 mm/memcontrol.c                 | 593 ++++++--------------------------------
 mm/page_counter.c               |  23 +-
 5 files changed, 163 insertions(+), 530 deletions(-)

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