Move highmem counters into highmem.c/.h

Move the totalhigh_pages definition into highmem.c/.h

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

Index: linux-2.6.17/include/linux/highmem.h
===================================================================
--- linux-2.6.17.orig/include/linux/highmem.h	2006-07-03 12:49:31.000000000 -0700
+++ linux-2.6.17/include/linux/highmem.h	2006-07-03 12:50:34.000000000 -0700
@@ -24,11 +24,14 @@
 
 /* declarations for linux/mm/highmem.c */
 unsigned int nr_free_highpages(void);
+extern unsigned long totalhigh_pages;
 
 #else /* CONFIG_HIGHMEM */
 
 static inline unsigned int nr_free_highpages(void) { return 0; }
 
+#define totalhigh_pages 0
+
 static inline void *kmap(struct page *page)
 {
 	might_sleep();
Index: linux-2.6.17/include/linux/swap.h
===================================================================
--- linux-2.6.17.orig/include/linux/swap.h	2006-07-03 12:49:32.000000000 -0700
+++ linux-2.6.17/include/linux/swap.h	2006-07-03 12:50:34.000000000 -0700
@@ -162,7 +162,6 @@
 
 /* linux/mm/page_alloc.c */
 extern unsigned long totalram_pages;
-extern unsigned long totalhigh_pages;
 extern unsigned long totalreserve_pages;
 extern long nr_swap_pages;
 extern unsigned int nr_free_pages(void);
Index: linux-2.6.17/mm/page_alloc.c
===================================================================
--- linux-2.6.17.orig/mm/page_alloc.c	2006-07-03 12:50:29.000000000 -0700
+++ linux-2.6.17/mm/page_alloc.c	2006-07-03 12:50:34.000000000 -0700
@@ -51,7 +51,6 @@
 nodemask_t node_possible_map __read_mostly = NODE_MASK_ALL;
 EXPORT_SYMBOL(node_possible_map);
 unsigned long totalram_pages __read_mostly;
-unsigned long totalhigh_pages __read_mostly;
 unsigned long totalreserve_pages __read_mostly;
 long nr_swap_pages;
 int percpu_pagelist_fraction;
@@ -1399,7 +1398,7 @@
 		" (%ukB HighMem)"
 #endif
 		"\n",
-		K(nr_free_pages()),
+		K(nr_free_pages())
 #ifdef CONFIG_HIGHMEM
 		, K(nr_free_highpages())
 #endif
Index: linux-2.6.17/mm/shmem.c
===================================================================
--- linux-2.6.17.orig/mm/shmem.c	2006-07-03 12:49:33.000000000 -0700
+++ linux-2.6.17/mm/shmem.c	2006-07-03 12:50:34.000000000 -0700
@@ -45,6 +45,7 @@
 #include <linux/namei.h>
 #include <linux/ctype.h>
 #include <linux/migrate.h>
+#include <linux/highmem.h>
 
 #include <asm/uaccess.h>
 #include <asm/div64.h>
Index: linux-2.6.17/mm/highmem.c
===================================================================
--- linux-2.6.17.orig/mm/highmem.c	2006-07-03 12:49:33.000000000 -0700
+++ linux-2.6.17/mm/highmem.c	2006-07-03 12:50:34.000000000 -0700
@@ -46,6 +46,7 @@
  */
 #ifdef CONFIG_HIGHMEM
 
+unsigned long totalhigh_pages __read_mostly;
 static int pkmap_count[LAST_PKMAP];
 static unsigned int last_pkmap_nr;
 static  __cacheline_aligned_in_smp DEFINE_SPINLOCK(kmap_lock);