Messages in this thread Patch in this message |  | | From | Joonsoo Kim <> | Subject | [RFC 03/16] mm/highmem: make nr_free_highpages() handles all highmem zones by itself | Date | Thu, 12 Feb 2015 16:32:07 +0900 |
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nr_free_highpages() manually add statistics per each highmem zone and return total value for them. Whenever we add a new highmem zone, we need to consider this function and it's really troublesome. Make it handles all highmem zones by itself.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> --- mm/highmem.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/mm/highmem.c b/mm/highmem.c index 123bcd3..50b4ca6 100644 --- a/mm/highmem.c +++ b/mm/highmem.c @@ -112,16 +112,12 @@ EXPORT_PER_CPU_SYMBOL(__kmap_atomic_idx); unsigned int nr_free_highpages (void) { - pg_data_t *pgdat; + struct zone *zone; unsigned int pages = 0; - for_each_online_pgdat(pgdat) { - pages += zone_page_state(&pgdat->node_zones[ZONE_HIGHMEM], - NR_FREE_PAGES); - if (zone_movable_is_highmem()) - pages += zone_page_state( - &pgdat->node_zones[ZONE_MOVABLE], - NR_FREE_PAGES); + for_each_populated_zone(zone) { + if (is_highmem(zone)) + pages += zone_page_state(zone, NR_FREE_PAGES); } return pages; -- 1.7.9.5
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