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authorChristoph Lameter <clameter@sgi.com>2006-09-25 23:31:11 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-09-26 08:48:46 -0700
commitc1f60a5a419cc60aff27daffb150f5a3a3a79ef4 (patch)
tree8ae176462d6f220cd744ae6c3454113eebda02a8 /mm/highmem.c
parent182e8e237349e7b6354f45aee4780b6423fd6a50 (diff)
downloadlinux-linaro-c1f60a5a419cc60aff27daffb150f5a3a3a79ef4.tar.gz
[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>
Diffstat (limited to 'mm/highmem.c')
-rw-r--r--mm/highmem.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/mm/highmem.c b/mm/highmem.c
index 9b2a5403c44..ee5519b176e 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);