From: Johannes Weiner <hannes@cmpxchg.org>
Date: Wed, 3 Jul 2013 22:04:51 +0000 (-0700)
Subject: mm: memcontrol: factor out reclaim iterator loading and updating
X-Git-Tag: omap-for-v3.11/fixes-for-merge-window~17^2~265
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=519ebea3bf6df45439e79c54bda1d9e29fe13a64;p=pandora-kernel.git

mm: memcontrol: factor out reclaim iterator loading and updating

mem_cgroup_iter() is too hard to follow.  Factor out the lockless reclaim
iterator loading and updating so it's easier to follow the big picture.

Also document the iterator invalidation mechanism a bit more extensively.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reported-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Tejun Heo <tj@kernel.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Glauber Costa <glommer@parallels.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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