tree 70c49b4cb52406ea1d8c60f73ad7733f60f9cee9
parent 61f2e7b0f474225b4226772830ae4b29a3a21f8d
author KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> 1300923738 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1300934782 -0700

memcg: res_counter_read_u64(): fix potential races on 32-bit machines

res_counter_read_u64 reads u64 value without lock.  It's dangerous in a
32bit environment.  Add locking.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Greg Thelen <gthelen@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: David Rientjes <rientjes@google.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>