mm/page_isolation.c: fix the function comments

Neil Zhang · torvalds · commit ec3b68825091 · 2016-04-01T17:03:37.000-05:00
Commit fea85cf ("mm/page_isolation.c: return last tested pfn rather than failure indicator") changed the meaning of the return value. Let's change the function comments as well. Signed-off-by: Neil Zhang <neilzhang1123@hotmail.com> Cc: Joonsoo Kim <js1304@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/page_isolation.c b/mm/page_isolation.c
@@ -215,7 +215,7 @@ int 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 1 if all pages in the range are isolated.
+ * Returns the last tested pfn.
  */
 static unsigned long
 __test_page_isolated_in_pageblock(unsigned long pfn, unsigned long end_pfn,

Original file line number	Diff line number	Diff line change
`@@ -215,7 +215,7 @@ int undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,`
`215`	`215`	`* all pages in [start_pfn...end_pfn) must be in the same zone.`
`216`	`216`	`* zone->lock must be held before call this.`
`217`	`217`	`*`
`218`		`- * Returns 1 if all pages in the range are isolated.`
	`218`	`+ * Returns the last tested pfn.`
`219`	`219`	`*/`
`220`	`220`	`static unsigned long`
`221`	`221`	`__test_page_isolated_in_pageblock(unsigned long pfn, unsigned long end_pfn,`