Re: [PATCH V9 3/7] mm/filemap: Extend __filemap_get_folio() to support NUMA memory policies

From: David Hildenbrand
Date: Tue Jul 22 2025 - 11:23:45 EST


On 13.07.25 19:43, Shivank Garg wrote:
From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>

Extend __filemap_get_folio() to support NUMA memory policies by
renaming the implementation to __filemap_get_folio_mpol() and adding
a mempolicy parameter. The original function becomes a static inline
wrapper that passes NULL for the mempolicy.

This infrastructure will enable future support for NUMA-aware page cache
allocations in guest_memfd memory backend KVM guests.

Reviewed-by: Pankaj Gupta <pankaj.gupta@xxxxxxx>
Reviewed-by: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Signed-off-by: Shivank Garg <shivankg@xxxxxxx>
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Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>

--
Cheers,

David / dhildenb