| From 92143b29f5d514da5f02bb3cb05f29e9e54aabec Mon Sep 17 00:00:00 2001 |
| From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> |
| Date: Tue, 26 Oct 2010 14:21:10 -0700 |
| Subject: [PATCH] mm: fix return value of scan_lru_pages in memory unplug |
| |
| commit f8f72ad5396987e05a42cf7eff826fb2a15ff148 upstream. |
| |
| 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> |
| Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
| Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
| Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> |
| |
| diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c |
| index 91f7c26..a577318 100644 |
| --- a/mm/memory_hotplug.c |
| +++ b/mm/memory_hotplug.c |
| @@ -633,7 +633,7 @@ 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; |
| -- |
| 1.7.4.4 |
| |
