commit 66a550308b8e4cbaba185d0326cb05d1bd758101
author Christoph Lameter <clameter@sgi.com> Wed Sep 27 01:50:09 2006 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> Wed Sep 27 08:26:13 2006 -0700
tree e0ac829da7702413e57c7de288ce27398f32cfdb
parent d5f541ed6e31518508c688912e7464facf253c87

[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>

mm/page_alloc.c

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 @@
 
 	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))