This is a note to let you know that I've just added the patch titled
mm: use __pfn_to_section() instead of open coding it
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mm-use-__pfn_to_section-instead-of-open-coding-it.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit dfd6261dddcc299b40b8d5cbe3e7023f2e295cee
Author: Rolf Eike Beer <eb@xxxxxxxxx>
Date: Fri Nov 5 13:38:15 2021 -0700
mm: use __pfn_to_section() instead of open coding it
[ Upstream commit f1dc0db296bd25960273649fc6ef2ecbf5aaa0e0 ]
It is defined in the same file just a few lines above.
Link: https://lkml.kernel.org/r/4598487.Rc0NezkW7i@xxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Rolf Eike Beer <eb@xxxxxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Stable-dep-of: 5ec8e8ea8b77 ("mm/sparsemem: fix race in accessing memory_section->usage")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 6ba100216530..9e1485083398 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -1493,7 +1493,7 @@ static inline int pfn_valid(unsigned long pfn)
if (pfn_to_section_nr(pfn) >= NR_MEM_SECTIONS)
return 0;
- ms = __nr_to_section(pfn_to_section_nr(pfn));
+ ms = __pfn_to_section(pfn);
if (!valid_section(ms))
return 0;
/*
@@ -1508,7 +1508,7 @@ static inline int pfn_in_present_section(unsigned long pfn)
{
if (pfn_to_section_nr(pfn) >= NR_MEM_SECTIONS)
return 0;
- return present_section(__nr_to_section(pfn_to_section_nr(pfn)));
+ return present_section(__pfn_to_section(pfn));
}
static inline unsigned long next_present_section_nr(unsigned long section_nr)
