The usage of swap should be showed in bytes.

Signed-off-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

mm/memcontrol.c

@@ -2725,7 +2725,7 @@ static int mem_cgroup_get_local_stat(struct mem_cgroup *mem, void *data)
 	s->stat[MCS_PGPGOUT] += val;
 	if (do_swap_account) {
 		val = mem_cgroup_read_stat(&mem->stat, MEM_CGROUP_STAT_SWAPOUT);
-		s->stat[MCS_SWAP] += val;
+		s->stat[MCS_SWAP] += val * PAGE_SIZE;
 	}
 
 	/* per zone stat */