linux-kernel - [PATCH v3 07/16] zsmalloc: remove page_mapcount

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Message-Id: <1459321935-3655-8-git-send-email-minchan@kernel.org>
Date:	Wed, 30 Mar 2016 16:12:06 +0900
From:	Minchan Kim <minchan@...nel.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	jlayton@...chiereds.net, bfields@...ldses.org,
	Vlastimil Babka <vbabka@...e.cz>,
	Joonsoo Kim <iamjoonsoo.kim@....com>, koct9i@...il.com,
	aquini@...hat.com, virtualization@...ts.linux-foundation.org,
	Mel Gorman <mgorman@...e.de>, Hugh Dickins <hughd@...gle.com>,
	Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
	Rik van Riel <riel@...hat.com>, rknize@...orola.com,
	Gioh Kim <gi-oh.kim@...fitbricks.com>,
	Sangseok Lee <sangseok.lee@....com>,
	Chan Gyun Jeong <chan.jeong@....com>,
	Al Viro <viro@...IV.linux.org.uk>,
	YiPing Xu <xuyiping@...ilicon.com>,
	Minchan Kim <minchan@...nel.org>
Subject: [PATCH v3 07/16] zsmalloc: remove page_mapcount_reset

We don't use page->_mapcount any more so no need to reset.

Signed-off-by: Minchan Kim <minchan@...nel.org>
---
 mm/zsmalloc.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 4dd72a803568..0f6cce9b9119 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -922,7 +922,6 @@ static void reset_page(struct page *page)
 	set_page_private(page, 0);
 	page->mapping = NULL;
 	page->freelist = NULL;
-	page_mapcount_reset(page);
 }
 
 static void free_zspage(struct page *first_page)
-- 
1.9.1