lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

mm: introduce for_each_populated_zone() macro

Browse Source 
Impact: cleanup

In almost cases, for_each_zone() is used with populated_zone().  It's
because almost function doesn't need memoryless node information.
Therefore, for_each_populated_zone() can help to make code simplify.

This patch has no functional change.

[akpm@linux-foundation.org: small cleanup]
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Reviewed-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
KOSAKI Motohiro
2009-03-31 15:19:31 -07:00
committed by Linus Torvalds
parent a6dc60f897
commit ee99c71c59
6 changed files with 27 additions and 48 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
kernel/power/snapshot.c
View File

@@ -321,13 +321,10 @@ static int create_mem_extents(struct list_head *list, gfp_t gfp_mask)
INIT_LIST_HEAD(list);
for_each_zone(zone) {
for_each_populated_zone(zone) {
unsigned long zone_start, zone_end;
struct mem_extent *ext, *cur, *aux;
if (!populated_zone(zone))
continue;
zone_start = zone->zone_start_pfn;
zone_end = zone->zone_start_pfn + zone->spanned_pages;
@@ -804,8 +801,8 @@ static unsigned int count_free_highmem_pages(void)
struct zone *zone;
unsigned int cnt = 0;
for_each_zone(zone)
if (populated_zone(zone) && is_highmem(zone))
for_each_populated_zone(zone)
if (is_highmem(zone))
cnt += zone_page_state(zone, NR_FREE_PAGES);
return cnt;