From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> mem_cgroup_disabled() should be checked at splitting. If diabled, no heavy work is necesary. Acked-by: Daisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx> Reviewed-by: Johannes Weiner <hannes@xxxxxxxxxxx> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> --- mm/memcontrol.c | 2 ++ 1 file changed, 2 insertions(+) Index: linux-2.6.38-rc2/mm/memcontrol.c =================================================================== --- linux-2.6.38-rc2.orig/mm/memcontrol.c +++ linux-2.6.38-rc2/mm/memcontrol.c @@ -2145,6 +2145,8 @@ void mem_cgroup_split_huge_fixup(struct 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. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>