From: Christoph Lameter <clameter@sgi.com>
Date: Wed, 27 Sep 2006 08:50:09 +0000 (-0700)
Subject: [PATCH] Do not allocate pagesets for unpopulated zones.
X-Git-Tag: v3.12-rc1~33738
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=66a550308b8e4cbaba185d0326cb05d1bd758101;p=kernel%2Fkernel-generic.git

[PATCH] Do not allocate pagesets for unpopulated zones.

We do not need to allocate pagesets for unpopulated zones.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index d0432e4..490aee1 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1829,6 +1829,9 @@ static int __cpuinit process_zones(int cpu)
 
 	for_each_zone(zone) {
 
+		if (!populated_zone(zone))
+			continue;
+
 		zone_pcp(zone, cpu) = kmalloc_node(sizeof(struct per_cpu_pageset),
 					 GFP_KERNEL, cpu_to_node(cpu));
 		if (!zone_pcp(zone, cpu))