mm/page_alloc.c: update comments for get/set_pfnblock_flags_mask

These two functions changed many times and the comments are out of date.

Signed-off-by: Qiang Huang <h.huangqiang@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index fef9614b57c40eed1e813c6fc5211362ae9049d4..2727a425549d0a7fd19b76a1f8b18ceb52e4eb98 100644 (file)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6057,10 +6057,11 @@ static inline int pfn_to_bitidx(struct zone *zone, unsigned long pfn)
 }
 
 /**
- * get_pageblock_flags_group - Return the requested group of flags for the pageblock_nr_pages block of pages
+ * get_pfnblock_flags_mask - Return the requested group of flags for the pageblock_nr_pages block of pages
  * @page: The page within the block of interest
- * @start_bitidx: The first bit of interest to retrieve
+ * @pfn: Page Number of the page
  * @end_bitidx: The last bit of interest
+ * @mask: The mask for flags
  * returns pageblock_bits flags
  */
 unsigned long get_pfnblock_flags_mask(struct page *page, unsigned long pfn,
@@ -6086,9 +6087,10 @@ unsigned long get_pfnblock_flags_mask(struct page *page, unsigned long pfn,
 /**
  * set_pfnblock_flags_mask - Set the requested group of flags for a pageblock_nr_pages block of pages
  * @page: The page within the block of interest
- * @start_bitidx: The first bit of interest
- * @end_bitidx: The last bit of interest
  * @flags: The flags to set
+ * @pfn: Page Number of the page
+ * @end_bitidx: The last bit of interest
+ * @mask: The mask for flags
  */
 void set_pfnblock_flags_mask(struct page *page, unsigned long flags,
                                        unsigned long pfn,