[PATCH] reduce MAX_NR_ZONES: move HIGHMEM counters into highmem.c/.h

Move totalhigh_pages and nr_free_highpages() into highmem.c/.h

Move the totalhigh_pages definition into highmem.c/.h.  Move the
nr_free_highpages function into highmem.c

[yoichi_yuasa@tripeaks.co.jp: build fix]
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

3 files changed, 14 insertions, 15 deletions

diff --git a/mm/highmem.c b/mm/highmem.c
index 9b2a5403c447..ee5519b176ee 100644
--- a/mm/highmem.c
+++ b/mm/highmem.c
@@ -46,6 +46,19 @@ static void *mempool_alloc_pages_isa(gfp_t gfp_mask, void *data)
  */
 #ifdef CONFIG_HIGHMEM
 
+unsigned long totalhigh_pages __read_mostly;
+
+unsigned int nr_free_highpages (void)
+{
+        pg_data_t *pgdat;
+        unsigned int pages = 0;
+
+        for_each_online_pgdat(pgdat)
+                pages += pgdat->node_zones[ZONE_HIGHMEM].free_pages;
+
+        return pages;
+}
+
 static int pkmap_count[LAST_PKMAP];
 static unsigned int last_pkmap_nr;
 static  __cacheline_aligned_in_smp DEFINE_SPINLOCK(kmap_lock);
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index e26491cb5a27..5cde54695cfb 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -51,7 +51,6 @@ 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;
-unsigned long totalhigh_pages __read_mostly;
 unsigned long totalreserve_pages __read_mostly;
 long nr_swap_pages;
 int percpu_pagelist_fraction;
@@ -1185,20 +1184,6 @@ unsigned int nr_free_pagecache_pages(void)
 {
         return nr_free_zone_pages(gfp_zone(GFP_HIGHUSER));
 }
-
-#ifdef CONFIG_HIGHMEM
-unsigned int nr_free_highpages (void)
-{
-        pg_data_t *pgdat;
-        unsigned int pages = 0;
-
-        for_each_online_pgdat(pgdat)
-                pages += pgdat->node_zones[ZONE_HIGHMEM].free_pages;
-
-        return pages;
-}
-#endif
-
 #ifdef CONFIG_NUMA
 static void show_node(struct zone *zone)
 {
diff --git a/mm/shmem.c b/mm/shmem.c
index db21c51531ca..8631be45b40d 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -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>