linux-kernel - [PATCH 38/49] mm: numa: migrate: Set last

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Date:	Fri,  7 Dec 2012 10:23:41 +0000
From:	Mel Gorman <mgorman@...e.de>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Ingo Molnar <mingo@...nel.org>
Cc:	Rik van Riel <riel@...hat.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Hugh Dickins <hughd@...gle.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Paul Turner <pjt@...gle.com>, Hillf Danton <dhillf@...il.com>,
	David Rientjes <rientjes@...gle.com>,
	Lee Schermerhorn <Lee.Schermerhorn@...com>,
	Alex Shi <lkml.alex@...il.com>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Aneesh Kumar <aneesh.kumar@...ux.vnet.ibm.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux-MM <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>, Mel Gorman <mgorman@...e.de>
Subject: [PATCH 38/49] mm: numa: migrate: Set last_nid on newly allocated page

From: Hillf Danton <dhillf@...il.com>

Pass last_nid from misplaced page to newly allocated migration target page.

Signed-off-by: Hillf Danton <dhillf@...il.com>
Signed-off-by: Mel Gorman <mgorman@...e.de>
---
 mm/migrate.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/mm/migrate.c b/mm/migrate.c
index 2c8310c..6bc9745 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -1457,6 +1457,9 @@ static struct page *alloc_misplaced_dst_page(struct page *page,
 					  __GFP_NOMEMALLOC | __GFP_NORETRY |
 					  __GFP_NOWARN) &
 					 ~GFP_IOFS, 0);
+	if (newpage)
+		page_xchg_last_nid(newpage, page_last_nid(page));
+
 	return newpage;
 }
 
-- 
1.7.9.2

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