Re: [Patch v2] mm/khugepaged: unify pmd folio installation with map_anon_folio_pmd()

[Lance Yang <lance.yang@linux.dev>]

On 2025/10/7 17:54, Dev Jain wrote:
> 
> On 07/10/25 9:36 am, Anshuman Khandual wrote:
>>
>> On 07/10/25 6:20 AM, Wei Yang wrote:
>>> Currently we install pmd folio with map_anon_folio_pmd() in
>>> __do_huge_pmd_anonymous_page() and do_huge_zero_wp_pmd(). While in
>>> collapse_huge_page(), it is done with identical code except statistics
>>> adjustment.
>>>
>>> Unify the process with map_anon_folio_pmd() to install pmd folio. Split
>>> it to map_anon_folio_pmd_pf() and map_anon_folio_pmd_nopf() to be used
>>> in page fault or not respectively.
>>>
>>> No functional change is intended.
>>>
>>> Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
>>> Cc: David Hildenbrand <david@redhat.com>
>>> Cc: Lance Yang <lance.yang@linux.dev>
>>> Cc: Dev Jain <dev.jain@arm.com>
>>> Cc: Zi Yan <ziy@nvidia.com>
>>> Cc: Usama Arif <usamaarif642@gmail.com>
>>> Cc: Matthew Wilcox <willy@infradead.org>
>>>
>>> ---
>>> v2:
>>>    * split to map_anon_folio_pmd_[no]pf() suggested by Matthew
>> On which branch this patch applies against ?
> 
> +1, does not apply on mm-new for me. There have been multiple patches
> changing the same file so it will be beneficial to say what commit
> it applies against.

I think this patch applies on top of the patch[1], which is based on mm-new.

[1] 
https://lore.kernel.org/linux-mm/20251002013825.20448-1-richard.weiyang@gmail.com