linux-kernel - [PATCH 07/22] mm: page allocator: Do not lookup the pageblock migratetype during allocation

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Date:	Wed,  8 May 2013 17:02:52 +0100
From:	Mel Gorman <mgorman@...e.de>
To:	Linux-MM <linux-mm@...ck.org>
Cc:	Johannes Weiner <hannes@...xchg.org>, Dave Hansen <dave@...1.net>,
	Christoph Lameter <cl@...ux.com>,
	LKML <linux-kernel@...r.kernel.org>, Mel Gorman <mgorman@...e.de>
Subject: [PATCH 07/22] mm: page allocator: Do not lookup the pageblock migratetype during allocation

The pageblock migrate type is checked during allocation in case it's CMA
but using get_freepage_migratetype() should be sufficient as the
magazines would have been drained prior to a CMA allocation attempt.

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 f74e16f..8867937 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1523,7 +1523,7 @@ again:
 		if (!page)
 			goto failed;
 		__mod_zone_freepage_state(zone, -(1 << order),
-					  get_pageblock_migratetype(page));
+					  get_freepage_migratetype(page));
 	}
 
 	__count_zone_vm_events(PGALLOC, zone, 1 << order);
-- 
1.8.1.4

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