linux-kernel - [cleanup][PATCH] Kill anon local variable from migrate_page

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Date:	Wed, 20 Jan 2010 15:06:01 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Daisuke Nishimura <nishimura@....nes.nec.co.jp>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	kosaki.motohiro@...fujitsu.com
Subject: [cleanup][PATCH] Kill anon local variable from migrate_page_copy


commit 01b1ae63c2 (memcg: simple migration handling) removed
mem_cgroup_uncharge_cache_page() call from migrate_page_copy.
Then, now anon variable is unused.

This patch remove it.

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc: Daisuke Nishimura <nishimura@....nes.nec.co.jp>
---
 mm/migrate.c |    4 ----
 1 files changed, 0 insertions(+), 4 deletions(-)

diff --git a/mm/migrate.c b/mm/migrate.c
index efddbf0..9e4a13f 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -275,8 +275,6 @@ static int migrate_page_move_mapping(struct address_space *mapping,
  */
 static void migrate_page_copy(struct page *newpage, struct page *page)
 {
-	int anon;
-
 	copy_highpage(newpage, page);
 
 	if (PageError(page))
@@ -313,8 +311,6 @@ static void migrate_page_copy(struct page *newpage, struct page *page)
 	ClearPageSwapCache(page);
 	ClearPagePrivate(page);
 	set_page_private(page, 0);
-	/* page->mapping contains a flag for PageAnon() */
-	anon = PageAnon(page);
 	page->mapping = NULL;
 
 	/*
-- 
1.6.5.2



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