The patch titled
Subject: mm: clarify a confusing comment for remap_pfn_range()
has been added to the -mm tree. Its filename is
mm-clarify-a-confusing-comment-of-remap_pfn_range.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-clarify-a-confusing-comment-of-remap_pfn_range.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-clarify-a-confusing-comment-of-remap_pfn_range.patch
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------------------------------------------------------
From: WANG Wenhu <wenhu.wang@xxxxxxxx>
Subject: mm: clarify a confusing comment for remap_pfn_range()
It really made me scratch my head. Replace the comment with an accurate
and consistent description.
The parameter pfn actually refers to the page frame number which is
right-shifted by PAGE_SHIFT from the physical address.
Link: http://lkml.kernel.org/r/20200310073955.43415-1-wenhu.wang@xxxxxxxx
Signed-off-by: WANG Wenhu <wenhu.wang@xxxxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/memory.c~mm-clarify-a-confusing-comment-of-remap_pfn_range
+++ a/mm/memory.c
@@ -1939,7 +1939,7 @@ static inline int remap_p4d_range(struct
* remap_pfn_range - remap kernel memory to userspace
* @vma: user vma to map to
* @addr: target user address to start at
- * @pfn: physical address of kernel memory
+ * @pfn: page frame number of kernel physical memory address
* @size: size of map area
* @prot: page protection flags for this mapping
*
_
Patches currently in -mm which might be from wenhu.wang@xxxxxxxx are
mm-clarify-a-confusing-comment-of-remap_pfn_range.patch
