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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 /mm/memory_hotplug.c
parent674470d97958a0ec72f72caf7f6451da40159cc7 (diff)
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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 'mm/memory_hotplug.c')
-rw-r--r--mm/memory_hotplug.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 8e333f953f08..9eadad626d64 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -229,7 +229,7 @@ static void grow_zone_span(struct zone *zone, unsigned long start_pfn,
zone_span_writelock(zone);
- old_zone_end_pfn = zone->zone_start_pfn + zone->spanned_pages;
+ old_zone_end_pfn = zone_end_pfn(zone);
if (!zone->spanned_pages || start_pfn < zone->zone_start_pfn)
zone->zone_start_pfn = start_pfn;
@@ -514,8 +514,9 @@ static int find_biggest_section_pfn(int nid, struct zone *zone,
static void shrink_zone_span(struct zone *zone, unsigned long start_pfn,
unsigned long end_pfn)
{
- unsigned long zone_start_pfn = zone->zone_start_pfn;
- unsigned long zone_end_pfn = zone->zone_start_pfn + zone->spanned_pages;
+ unsigned long zone_start_pfn = zone->zone_start_pfn;
+ unsigned long z = zone_end_pfn(zone); /* zone_end_pfn namespace clash */
+ unsigned long zone_end_pfn = z;
unsigned long pfn;
struct mem_section *ms;
int nid = zone_to_nid(zone);