mm/memcontrol.c: suppress uninitialized-var warning with older gcc's

mm/memcontrol.c: In function 'mem_cgroup_force_empty':
mm/memcontrol.c:2280: warning: 'flags' may be used uninitialized in this function

It's a false positive.

Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: Greg Thelen <gthelen@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index e5759b51f37e..61ffe712afe0 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -2334,7 +2334,7 @@ static int mem_cgroup_move_parent(struct page *page,
         struct cgroup *pcg = cg->parent;
         struct mem_cgroup *parent;
         unsigned int nr_pages;
-        unsigned long flags;
+        unsigned long uninitialized_var(flags);
         int ret;
 
         /* Is ROOT ? */