Patch "mm: use __pfn_to_section() instead of open coding it" has been added to the 5.10-stable tree

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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 5.10-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-5.10 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit b3c6ce29108eb706dc9a5440e6edd9596e779f5b
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 b2e4599b8883..11fa11c31fda 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -1369,7 +1369,7 @@ 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;
 	/*
@@ -1384,7 +1384,7 @@ 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)




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