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authorZhang Yanfei <zhangyanfei@cn.fujitsu.com>2013-11-13 03:07:42 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2013-11-13 07:09:06 +0400
commit85b35feaecd4d2284505b22708795bc1f03fc897 (patch)
tree0160ae1452e94c2fcaf5f20b84c0f4b39a6882d2 /mm/memory_hotplug.c
parent071aee138410210e3764f3ae8d37ef46dc6d3b42 (diff)
downloadlinux-85b35feaecd4d2284505b22708795bc1f03fc897.tar.xz
mm/sparsemem: use PAGES_PER_SECTION to remove redundant nr_pages parameter
For below functions, - sparse_add_one_section() - kmalloc_section_memmap() - __kmalloc_section_memmap() - __kfree_section_memmap() they are always invoked to operate on one memory section, so it is redundant to always pass a nr_pages parameter, which is the page numbers in one section. So we can directly use predefined macro PAGES_PER_SECTION instead of passing the parameter. Signed-off-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com> Cc: Wen Congyang <wency@cn.fujitsu.com> Cc: Tang Chen <tangchen@cn.fujitsu.com> Cc: Toshi Kani <toshi.kani@hp.com> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Yasunori Goto <y-goto@jp.fujitsu.com> Cc: Andy Whitcroft <apw@shadowen.org> 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.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 8285346be663..1b6fe8ca71e6 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -401,13 +401,12 @@ static int __meminit __add_zone(struct zone *zone, unsigned long phys_start_pfn)
static int __meminit __add_section(int nid, struct zone *zone,
unsigned long phys_start_pfn)
{
- int nr_pages = PAGES_PER_SECTION;
int ret;
if (pfn_valid(phys_start_pfn))
return -EEXIST;
- ret = sparse_add_one_section(zone, phys_start_pfn, nr_pages);
+ ret = sparse_add_one_section(zone, phys_start_pfn);
if (ret < 0)
return ret;