linux-kernel - [PATCH] splitlru: memcg swapbacked pages active

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Date:	Sun, 29 Jun 2008 01:22:22 +0100 (BST)
From:	Hugh Dickins <hugh@...itas.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
cc:	Rik van Riel <riel@...hat.com>,
	Lee Schermerhorn <lee.schermerhorn@...com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Balbir Singh <balbir@...ibm.com>, linux-kernel@...r.kernel.org
Subject: [PATCH] splitlru: memcg swapbacked pages active

add_to_page_cache_lru puts PageSwapBacked pages on the active_anon lru,
so shouldn't mem_cgroup_charge_common mirror that by setting FLAG_ACTIVE?

Signed-off-by: Hugh Dickins <hugh@...itas.com>
---
Should follow mmotm's vmscan-split-lru-lists-into-anon-file-sets.patch

 mm/memcontrol.c |    2 ++
 1 file changed, 2 insertions(+)

--- mmotm/mm/memcontrol.c	2008-06-27 13:39:20.000000000 +0100
+++ linux/mm/memcontrol.c	2008-06-27 17:32:29.000000000 +0100
@@ -560,6 +560,8 @@ static int mem_cgroup_charge_common(stru
 		pc->flags = PAGE_CGROUP_FLAG_CACHE;
 		if (page_is_file_cache(page))
 			pc->flags |= PAGE_CGROUP_FLAG_FILE;
+		else
+			pc->flags |= PAGE_CGROUP_FLAG_ACTIVE;
 	} else
 		pc->flags = PAGE_CGROUP_FLAG_ACTIVE;
 
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