The patch titled
Subject: mm: accurately document nr_free_*_pages functions with code comments
has been removed from the -mm tree. Its filename was
mm-accurately-document-nr_free__pages-functions-with-code-comments.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Zhang Yanfei <zhangyanfei@xxxxxxxxxxxxxx>
Subject: mm: accurately document nr_free_*_pages functions with code comments
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.
[akpm@xxxxxxxxxxxxxxxxxxxx: tweak comments]
Reviewed-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Signed-off-by: Zhang Yanfei <zhangyanfei@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_alloc.c | 23 +++++++++++++++++++----
1 file changed, 19 insertions(+), 4 deletions(-)
diff -puN mm/page_alloc.c~mm-accurately-document-nr_free__pages-functions-with-code-comments mm/page_alloc.c
--- a/mm/page_alloc.c~mm-accurately-document-nr_free__pages-functions-with-code-comments
+++ a/mm/page_alloc.c
@@ -2813,6 +2813,15 @@ void free_pages_exact(void *virt, size_t
}
EXPORT_SYMBOL(free_pages_exact);
+/**
+ * nr_free_zone_pages - count number of pages beyond high watermark
+ * @offset: The zone index of the highest zone
+ *
+ * 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)
{
struct zoneref *z;
@@ -2833,8 +2842,11 @@ static unsigned long nr_free_zone_pages(
return sum;
}
-/*
- * Amount of free RAM allocatable within ZONE_DMA and ZONE_NORMAL
+/**
+ * nr_free_buffer_pages - count number of pages beyond high watermark
+ *
+ * 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)
{
@@ -2842,8 +2854,11 @@ unsigned long nr_free_buffer_pages(void)
}
EXPORT_SYMBOL_GPL(nr_free_buffer_pages);
-/*
- * Amount of free RAM allocatable within all zones
+/**
+ * nr_free_pagecache_pages - count number of pages beyond high watermark
+ *
+ * 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)
{
_
Patches currently in -mm which might be from zhangyanfei@xxxxxxxxxxxxxx are
origin.patch
ipvs-change-type-of-netns_ipvs-sysctl_sync_qlen_max.patch
fs-proc-vmcorec-put-if-tests-in-the-top-of-the-while-loop-to-reduce-duplication.patch
fs-proc-vmcorec-put-if-tests-in-the-top-of-the-while-loop-to-reduce-duplication-fix.patch
fs-proc-vmcorec-put-if-tests-in-the-top-of-the-while-loop-to-reduce-duplication-fix-fix.patch
kexec-get-rid-of-duplicate-check-for-hole_end.patch
kexec-prevent-double-free-on-image-allocation-failure.patch
kexec-fix-memory-leak-in-function-kimage_normal_alloc.patch
kexec-avoid-freeing-null-pointer-in-function-kimage_crash_alloc.patch
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