[PATCH 1/3] page_isolation: codeclean fix comment and rm unneeded val init

[Bob Liu <lliubbo@gmail.com>]

function __test_page_isolated_in_pageblock() return 1 if all pages
in the range is isolated, so fix the comment.
value pfn will be init in the following loop so rm it.

Signed-off-by: Bob Liu <lliubbo@gmail.com>
---
 mm/page_isolation.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/mm/page_isolation.c b/mm/page_isolation.c
index 5e0ffd9..4ae42bb 100644
--- a/mm/page_isolation.c
+++ b/mm/page_isolation.c
@@ -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.
-- 
1.5.6.3

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