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| author | Jeff Garzik <jeff@garzik.org> | 2006-09-26 13:13:19 -0400 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2006-09-26 13:13:19 -0400 |
| commit | c226951b93f7cd7c3a10b17384535b617bd43fd0 (patch) | |
| tree | 07b8796a5c99fbbf587b8d0dbcbc173cfe5e381e /mm/highmem.c | |
| parent | b0df3bd1e553e901ec7297267611a5db88240b38 (diff) | |
| parent | e8216dee838c09776680a6f1a2e54d81f3cdfa14 (diff) | |
| download | lwn-c226951b93f7cd7c3a10b17384535b617bd43fd0.tar.gz lwn-c226951b93f7cd7c3a10b17384535b617bd43fd0.zip | |
Merge branch 'master' into upstream
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); |