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| author | Christoph Lameter <clameter@sgi.com> | 2006-09-25 23:31:11 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-09-26 08:48:46 -0700 |
| commit | c1f60a5a419cc60aff27daffb150f5a3a3a79ef4 (patch) | |
| tree | 8ae176462d6f220cd744ae6c3454113eebda02a8 /mm/highmem.c | |
| parent | 182e8e237349e7b6354f45aee4780b6423fd6a50 (diff) | |
| download | lwn-c1f60a5a419cc60aff27daffb150f5a3a3a79ef4.tar.gz lwn-c1f60a5a419cc60aff27daffb150f5a3a3a79ef4.zip | |
[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.c | 13 |
1 files changed, 13 insertions, 0 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); |