linux-kernel - [PATCH 2/2] mm/cleanup: use pfn_to_nid() instead of page_to_nid(pfn_to

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Date:	Mon, 9 Sep 2013 11:27:56 +0800
From:	Xishi Qiu <qiuxishi@...wei.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Wen Congyang <wency@...fujitsu.com>,
	Tang Chen <tangchen@...fujitsu.com>,
	Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>,
	Toshi Kani <toshi.kani@...com>
CC:	<linux-mm@...ck.org>, LKML <linux-kernel@...r.kernel.org>,
	Xishi Qiu <qiuxishi@...wei.com>
Subject: [PATCH 2/2] mm/cleanup: use pfn_to_nid() instead of page_to_nid(pfn_to_page())

Use "pfn_to_nid(pfn)" instead of "page_to_nid(pfn_to_page(pfn))".

Signed-off-by: Xishi Qiu <qiuxishi@...wei.com>
---
 mm/memory_hotplug.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 85f80b7..a95dd28 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -937,7 +937,7 @@ int __ref online_pages(unsigned long pfn, unsigned long nr_pages, int online_typ
 	arg.nr_pages = nr_pages;
 	node_states_check_changes_online(nr_pages, zone, &arg);
 
-	nid = page_to_nid(pfn_to_page(pfn));
+	nid = pfn_to_nid(pfn);
 
 	ret = memory_notify(MEM_GOING_ONLINE, &arg);
 	ret = notifier_to_errno(ret);
-- 
1.7.1


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