The patch titled
Subject: mm/memory.c: clarify a confusing comment for vm_iomap_memory
has been added to the -mm tree. Its filename is
mm-clarify-a-confusing-comment-for-vm_iomap_memory.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-clarify-a-confusing-comment-for-vm_iomap_memory.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-clarify-a-confusing-comment-for-vm_iomap_memory.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Wang Wenhu <wenhu.wang@xxxxxxxx>
Subject: mm/memory.c: clarify a confusing comment for vm_iomap_memory
The param "start" actually referes to the physical memory start, which is
to be mapped into virtual area vma. And it is the field vma->vm_start
which stands for the start of the area.
Most of the time, we do not read through whole implementation of a
function but only the definition and essential comments. Accurate
comments are definitely the base stone.
Link: http://lkml.kernel.org/r/20200318052206.105104-1-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-for-vm_iomap_memory
+++ a/mm/memory.c
@@ -2009,7 +2009,7 @@ EXPORT_SYMBOL(remap_pfn_range);
/**
* vm_iomap_memory - remap memory to userspace
* @vma: user vma to map to
- * @start: start of area
+ * @start: start of the physical memory to be mapped
* @len: size of area
*
* This is a simplified io_remap_pfn_range() for common driver use. The
_
Patches currently in -mm which might be from wenhu.wang@xxxxxxxx are
mm-clarify-a-confusing-comment-of-remap_pfn_range.patch
mm-clarify-a-confusing-comment-for-vm_iomap_memory.patch
