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authorXishi Qiu <qiuxishi@huawei.com>2013-09-11 14:21:44 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-09-11 15:57:36 -0700
commitc33bc315fd921b1179a1d3df5756e0da6fb73944 (patch)
tree7130a2ac95c993aebb19d4a5e777f761744a06ac /kernel
parent674470d97958a0ec72f72caf7f6451da40159cc7 (diff)
mm: use zone_end_pfn() instead of zone_start_pfn+spanned_pages
Use "zone_end_pfn()" instead of "zone->zone_start_pfn + zone->spanned_pages". Simplify the code, no functional change. [akpm@linux-foundation.org: fix build] Signed-off-by: Xishi Qiu <qiuxishi@huawei.com> Cc: Cody P Schafer <cody@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/power/snapshot.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index 349587bb03e1..358a146fd4da 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -352,7 +352,7 @@ static int create_mem_extents(struct list_head *list, gfp_t gfp_mask)
struct mem_extent *ext, *cur, *aux;
zone_start = zone->zone_start_pfn;
- zone_end = zone->zone_start_pfn + zone->spanned_pages;
+ zone_end = zone_end_pfn(zone);
list_for_each_entry(ext, list, hook)
if (zone_start <= ext->end)
@@ -884,7 +884,7 @@ static unsigned int count_highmem_pages(void)
continue;
mark_free_pages(zone);
- max_zone_pfn = zone->zone_start_pfn + zone->spanned_pages;
+ max_zone_pfn = zone_end_pfn(zone);
for (pfn = zone->zone_start_pfn; pfn < max_zone_pfn; pfn++)
if (saveable_highmem_page(zone, pfn))
n++;
@@ -948,7 +948,7 @@ static unsigned int count_data_pages(void)
continue;
mark_free_pages(zone);
- max_zone_pfn = zone->zone_start_pfn + zone->spanned_pages;
+ max_zone_pfn = zone_end_pfn(zone);
for (pfn = zone->zone_start_pfn; pfn < max_zone_pfn; pfn++)
if (saveable_page(zone, pfn))
n++;
@@ -1041,7 +1041,7 @@ copy_data_pages(struct memory_bitmap *copy_bm, struct memory_bitmap *orig_bm)
unsigned long max_zone_pfn;
mark_free_pages(zone);
- max_zone_pfn = zone->zone_start_pfn + zone->spanned_pages;
+ max_zone_pfn = zone_end_pfn(zone);
for (pfn = zone->zone_start_pfn; pfn < max_zone_pfn; pfn++)
if (page_is_saveable(zone, pfn))
memory_bm_set_bit(orig_bm, pfn);
@@ -1093,7 +1093,7 @@ void swsusp_free(void)
unsigned long pfn, max_zone_pfn;
for_each_populated_zone(zone) {
- max_zone_pfn = zone->zone_start_pfn + zone->spanned_pages;
+ max_zone_pfn = zone_end_pfn(zone);
for (pfn = zone->zone_start_pfn; pfn < max_zone_pfn; pfn++)
if (pfn_valid(pfn)) {
struct page *page = pfn_to_page(pfn);
@@ -1755,7 +1755,7 @@ static int mark_unsafe_pages(struct memory_bitmap *bm)
/* Clear page flags */
for_each_populated_zone(zone) {
- max_zone_pfn = zone->zone_start_pfn + zone->spanned_pages;
+ max_zone_pfn = zone_end_pfn(zone);
for (pfn = zone->zone_start_pfn; pfn < max_zone_pfn; pfn++)
if (pfn_valid(pfn))
swsusp_unset_page_free(pfn_to_page(pfn));