On Thu, 07 Feb 2013 09:57:27 +0800
Zhang Yanfei <zhangyanfei@xxxxxxxxxxxxxx> wrote:
> Functions nr_free_zone_pages, nr_free_buffer_pages and nr_free_pagecache_pages
> are horribly badly named, so accurately document them with code comments
> in case of the misuse of them.
Looks OK. I fiddled with it a bit:
--- a/mm/page_alloc.c~mm-accurately-document-nr_free__pages-functions-with-code-comments-fix
+++ a/mm/page_alloc.c
@@ -2813,12 +2813,12 @@ void free_pages_exact(void *virt, size_t
EXPORT_SYMBOL(free_pages_exact);
/**
- * nr_free_zone_pages - get pages that is beyond high watermark
+ * nr_free_zone_pages - count number of pages beyond high watermark
* @offset: The zone index of the highest zone
*
- * The function counts pages which are beyond high watermark within
- * all zones at or below a given zone index. For each zone, the
- * amount of pages is calculated as:
+ * nr_free_zone_pages() counts the number of counts pages which are beyond the
+ * high watermark within all zones at or below a given zone index. For each
+ * zone, the number of pages is calculated as:
* present_pages - high_pages
*/
static unsigned long nr_free_zone_pages(int offset)
@@ -2842,10 +2842,10 @@ static unsigned long nr_free_zone_pages(
}
/**
- * nr_free_buffer_pages - get pages that is beyond high watermark
+ * nr_free_buffer_pages - count number of pages beyond high watermark
*
- * The function counts pages which are beyond high watermark within
- * ZONE_DMA and ZONE_NORMAL.
+ * nr_free_buffer_pages() counts the number of pages which are beyond the high
+ * watermark within ZONE_DMA and ZONE_NORMAL.
*/
unsigned long nr_free_buffer_pages(void)
{
@@ -2854,10 +2854,10 @@ unsigned long nr_free_buffer_pages(void)
EXPORT_SYMBOL_GPL(nr_free_buffer_pages);
/**
- * nr_free_pagecache_pages - get pages that is beyond high watermark
+ * nr_free_pagecache_pages - count number of pages beyond high watermark
*
- * The function counts pages which are beyond high watermark within
- * all zones.
+ * nr_free_pagecache_pages() counts the number of pages which are beyond the
+ * high watermark within all zones.
*/
unsigned long nr_free_pagecache_pages(void)
{
_
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