linux-kernel - [PATCH] mm: meminit: Reduce number of times pageblocks are set during struct page init -fix

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Message-ID: <20150501092330.GD2449@suse.de>
Date:	Fri, 1 May 2015 10:23:30 +0100
From:	Mel Gorman <mgorman@...e.de>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Nathan Zimmer <nzimmer@....com>,
	Dave Hansen <dave.hansen@...el.com>,
	Waiman Long <waiman.long@...com>,
	Scott Norton <scott.norton@...com>,
	Daniel J Blueman <daniel@...ascale.com>,
	Linux-MM <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH] mm: meminit: Reduce number of times pageblocks are set
 during struct page init -fix


The patch "mm: meminit: Reduce number of times pageblocks are
set during struct page init" is setting a pageblock before
the page is initialised. This is a fix for the mmotm patch
mm-meminit-reduce-number-of-times-pageblocks-are-set-during-struct-page-init.patch

Signed-off-by: Mel Gorman <mgorman@...e.de>
---
 mm/page_alloc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 19aac687963c..544edb3b8da2 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -4497,8 +4497,8 @@ void __meminit memmap_init_zone(unsigned long size, int nid, unsigned long zone,
 		if (!(pfn & (pageblock_nr_pages - 1))) {
 			struct page *page = pfn_to_page(pfn);
 
-			set_pageblock_migratetype(page, MIGRATE_MOVABLE);
 			__init_single_page(page, pfn, zone, nid);
+			set_pageblock_migratetype(page, MIGRATE_MOVABLE);
 		} else {
 			__init_single_pfn(pfn, zone, nid);
 		}
--
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