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mm: page_isolation: codeclean fix comment and rm unneeded val init 

__test_page_isolated_in_pageblock() returns 1 if all pages in the range
are isolated, so fix the comment.  Variable `pfn' will be initialised in
the following loop so remove it.

Signed-off-by: Bob Liu <lliubbo@gmail.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Bob Liu 2010-10-26 14:22:09 -07:00 committed by Linus Torvalds
parent 572438f9b5
commit f6a3607e5f
1 changed files with 1 additions and 2 deletions
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mm/page_isolation.c
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@ -86,7 +86,7 @@ undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn)
* all pages in [start_pfn...end_pfn) must be in the same zone.
* zone->lock must be held before call this.
*
* Returns 0 if all pages in the range is isolated.
* Returns 1 if all pages in the range is isolated.
*/
static int
__test_page_isolated_in_pageblock(unsigned long pfn, unsigned long end_pfn)
@ -119,7 +119,6 @@ int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn)
struct zone *zone;
int ret;
pfn = start_pfn;
/*
* Note: pageblock_nr_page != MAX_ORDER. Then, chunks of free page
* is not aligned to pageblock_nr_pages.