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authorCon Kolivas <kernel@kolivas.org>2006-01-06 00:11:15 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-06 08:33:28 -0800
commitf3fe65122da05e1cd4c9140340d96ea2f95d0c49 (patch)
tree65f2bcdb0a9665123b5083d3aea7dae483593cbc /include
parent80bfed904c690642db9d4178950735299160950b (diff)
[PATCH] mm: add populated_zone() helper
There are numerous places we check whether a zone is populated or not. Provide a helper function to check for populated zones and convert all checks for zone->present_pages. Signed-off-by: Con Kolivas <kernel@kolivas.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/mmzone.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 8d6caa414c4..c34f4a2c62f 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -388,6 +388,11 @@ static inline struct zone *next_zone(struct zone *zone)
#define for_each_zone(zone) \
for (zone = pgdat_list->node_zones; zone; zone = next_zone(zone))
+static inline int populated_zone(struct zone *zone)
+{
+ return (!!zone->present_pages);
+}
+
static inline int is_highmem_idx(int idx)
{
return (idx == ZONE_HIGHMEM);