diff options
| author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2011-01-25 15:07:28 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-26 10:50:03 +1000 |
| commit | 3d37c4a9199920964ffdfaec6335d93b9dcf9ca5 (patch) | |
| tree | ee37989687d869817aa870a7fb4c405b7907c030 | |
| parent | 01c88e2d6b7330c0cc5867fe2297e7d826e1337d (diff) | |
memcg: bugfix check mem_cgroup_disabled() at split fixup
mem_cgroup_disabled() should be checked at splitting. If disabled, no
heavy work is necesary.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Reviewed-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Balbir Singh <balbir@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/memcontrol.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 1eb1a04f874..8ab1d42664f 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -2145,6 +2145,8 @@ void mem_cgroup_split_huge_fixup(struct page *head, struct page *tail) struct page_cgroup *tail_pc = lookup_page_cgroup(tail); unsigned long flags; + if (mem_cgroup_disabled()) + return; /* * We have no races with charge/uncharge but will have races with * page state accounting. |