tree 60f4a8ce1278a861ff530885353da74d1cf0bdb4
parent 18f59ea7de08db2449ba99185e8d8cc30e7acac5
author Lai Jiangshan <laijs@cn.fujitsu.com> 1231380487 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1231432266 -0800

memcontrol: rcu_read_lock() to protect mm_match_cgroup()

mm_match_cgroup() calls cgroup_subsys_state().

We must use rcu_read_lock() to protect cgroup_subsys_state().

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Paul Menage <menage@google.com>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Pavel Emelyanov <xemul@openvz.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>