high: Do not define totalhigh_pages if CONFIG_HIGHMEM is off.

Signed-off-by: Christoph Lameter <clameter@sgi.com>

Index: linux-2.6.17-mm3/mm/page_alloc.c
===================================================================
--- linux-2.6.17-mm3.orig/mm/page_alloc.c	2006-06-28 12:59:28.921196945 -0700
+++ linux-2.6.17-mm3/mm/page_alloc.c	2006-06-28 13:07:37.098976698 -0700
@@ -52,7 +52,9 @@ EXPORT_SYMBOL(node_online_map);
 nodemask_t node_possible_map __read_mostly = NODE_MASK_ALL;
 EXPORT_SYMBOL(node_possible_map);
 unsigned long totalram_pages __read_mostly;
+#ifdef CONFIG_HIGHMEM
 unsigned long totalhigh_pages __read_mostly;
+#endif
 unsigned long totalreserve_pages __read_mostly;
 long nr_swap_pages;
 int percpu_pagelist_fraction;
Index: linux-2.6.17-mm3/include/linux/swap.h
===================================================================
--- linux-2.6.17-mm3.orig/include/linux/swap.h	2006-06-27 09:40:23.782822527 -0700
+++ linux-2.6.17-mm3/include/linux/swap.h	2006-06-28 13:07:37.099953200 -0700
@@ -162,7 +162,11 @@ extern void swapin_readahead(swp_entry_t
 
 /* linux/mm/page_alloc.c */
 extern unsigned long totalram_pages;
+#ifdef CONFIG_HIGHMEM
 extern unsigned long totalhigh_pages;
+#else
+#define totalhigh_pages 0
+#endif
 extern unsigned long totalreserve_pages;
 extern long nr_swap_pages;
 extern unsigned int nr_free_pages(void);