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authorZhang Yanfei <zhangyanfei@cn.fujitsu.com>2013-11-12 15:07:42 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-11-13 12:09:06 +0900
commit85b35feaecd4d2284505b22708795bc1f03fc897 (patch)
tree0160ae1452e94c2fcaf5f20b84c0f4b39a6882d2 /include
parent071aee138410210e3764f3ae8d37ef46dc6d3b42 (diff)
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 'include')
-rw-r--r--include/linux/memory_hotplug.h3
1 files changed, 1 insertions, 2 deletions
diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index 22203c293f07..4ca3d951fe91 100644
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -268,8 +268,7 @@ extern int arch_add_memory(int nid, u64 start, u64 size);
extern int offline_pages(unsigned long start_pfn, unsigned long nr_pages);
extern bool is_memblock_offlined(struct memory_block *mem);
extern void remove_memory(int nid, u64 start, u64 size);
-extern int sparse_add_one_section(struct zone *zone, unsigned long start_pfn,
- int nr_pages);
+extern int sparse_add_one_section(struct zone *zone, unsigned long start_pfn);
extern void sparse_remove_one_section(struct zone *zone, struct mem_section *ms);
extern struct page *sparse_decode_mem_map(unsigned long coded_mem_map,
unsigned long pnum);