[mm v2 0/3] Support memory cgroup hotplug

[Balbir Singh <bsingharora@gmail.com>]

In the absence of hotplug we use extra memory proportional to
(possible_nodes - online_nodes) * number_of_cgroups. PPC64 has a patch
to disable large consumption with large number of cgroups. This patch
adds hotplug support to memory cgroups and reverts the commit that
limited possible nodes to online nodes.

Cc: Tejun Heo <tj@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org> 
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>

I've tested this patches under a VM with two nodes and movable
nodes enabled. I've offlined nodes and checked that the system
and cgroups with tasks deep in the hierarchy continue to work
fine.

These patches are on top of linux-next (20161117)

Changelog v2:
	Add get/put_online_mems() around node iteration
	Use MEM_OFFLINE/MEM_ONLINE instead of MEM_GOING_OFFLINE/ONLINE

Balbir Singh (3):
  mm: Add basic infrastructure for memcg hotplug support
  mm: Move operations to hotplug callbacks
  powerpc/mm: fix node_possible_map limitations

 arch/powerpc/mm/numa.c |   7 ----
 mm/memcontrol.c        | 107 +++++++++++++++++++++++++++++++++++++++++++------
 2 files changed, 94 insertions(+), 20 deletions(-)

-- 
2.5.5

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>