From fad02c2de0623fc6d4ff12ca72b60ea521118681 Mon Sep 17 00:00:00 2001
From: Johannes Weiner <hannes@cmpxchg.org>
Date: Tue, 29 May 2012 15:07:07 -0700
Subject: mm: memcg: group swapped-out statistics counter logically

The counter of currently swapped out pages in a memcg (hierarchy) is
sitting amidst ever-increasing event counters.  Move this item to the
other counters that reflect current state rather than history.

This technically breaks the kernel ABI, but hopefully nobody relies on the
order of items in memory.stat.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Ying Han <yinghan@google.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 mm/memcontrol.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index b7b230606f2c..1118e02a40b6 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -4043,9 +4043,9 @@ enum {
 	MCS_CACHE,
 	MCS_RSS,
 	MCS_FILE_MAPPED,
+	MCS_SWAP,
 	MCS_PGPGIN,
 	MCS_PGPGOUT,
-	MCS_SWAP,
 	MCS_PGFAULT,
 	MCS_PGMAJFAULT,
 	MCS_INACTIVE_ANON,
@@ -4064,9 +4064,9 @@ static const char *memcg_stat_strings[NR_MCS_STAT] = {
 	"cache",
 	"rss",
 	"mapped_file",
+	"swap",
 	"pgpgin",
 	"pgpgout",
-	"swap",
 	"pgfault",
 	"pgmajfault",
 	"inactive_anon",
-- 
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