linux-kernel - [PATCH mm] mm: memcg: remove unused node/section info from pc->flags fix

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Date:	Tue, 8 Nov 2011 21:18:10 -0800 (PST)
From:	Hugh Dickins <hughd@...gle.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
cc:	Johannes Weiner <jweiner@...hat.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Michal Hocko <mhocko@...e.cz>,
	"Kirill A. Shutemov" <kirill@...temov.name>,
	Daisuke Nishimura <nishimura@....nes.nec.co.jp>,
	Balbir Singh <bsingharora@...il.com>,
	Ying Han <yinghan@...gle.com>,
	Greg Thelen <gthelen@...gle.com>,
	Michel Lespinasse <walken@...gle.com>,
	Rik van Riel <riel@...hat.com>,
	Minchan Kim <minchan.kim@...il.com>,
	Christoph Hellwig <hch@...radead.org>,
	Stephen Rothwell <sfr@...b.auug.org.au>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH mm] mm: memcg: remove unused node/section info from pc->flags
 fix

Fix non-CONFIG_SPARSEMEM build, which failed with
mm/page_cgroup.c: In function `alloc_node_page_cgroup':
mm/page_cgroup.c:44: error: `start_pfn' undeclared (first use in this function)

Signed-off-by: Hugh Dickins <hughd@...gle.com>
---
For folding into mm-memcg-remove-unused-node-section-info-from-pc-flags.patch

 mm/page_cgroup.c |    2 --
 1 file changed, 2 deletions(-)

Hannes: heartfelt thanks to you for this great work - Hugh

--- 3.2-rc1-jw/mm/page_cgroup.c	2011-11-08 20:25:24.678395000 -0800
+++ linux/mm/page_cgroup.c	2011-11-08 20:42:05.687358464 -0800
@@ -41,9 +41,7 @@ static int __init alloc_node_page_cgroup
 	unsigned long table_size;
 	unsigned long nr_pages;
 
-	start_pfn = NODE_DATA(nid)->node_start_pfn;
 	nr_pages = NODE_DATA(nid)->node_spanned_pages;
-
 	if (!nr_pages)
 		return 0;
 
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