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mm: fix return value of scan_lru_pages in memory unplug 

scan_lru_pages returns pfn. So, it's type should be "unsigned long"
not "int".

Note: I guess this has been work until now because memory hotplug tester's
      machine has not very big memory....
      physical address < 32bit << PAGE_SHIFT.

Reported-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
KAMEZAWA Hiroyuki 2010-10-26 14:21:10 -07:00 committed by Linus Torvalds
parent 45352bbf48
commit f8f72ad539
1 changed files with 1 additions and 1 deletions
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2
mm/memory_hotplug.c
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@ -659,7 +659,7 @@ static int test_pages_in_a_zone(unsigned long start_pfn, unsigned long end_pfn)
* Scanning pfn is much easier than scanning lru list.
* Scan pfn from start to end and Find LRU page.
*/
int scan_lru_pages(unsigned long start, unsigned long end)
unsigned long scan_lru_pages(unsigned long start, unsigned long end)
{
unsigned long pfn;
struct page *page;