Re: [PATCH v1 0/4] mm: move vma_(kernel|mmu)_pagesize() out of hugetlb.c

[Pedro Falcato]

On Fri, Mar 06, 2026 at 11:15:56AM +0100, David Hildenbrand (Arm) wrote:
> Looking into vma_(kernel|mmu)_pagesize(), I realized that there is one
> scenario where DAX would not do the right thing when the kernel is
> not compiled with hugetlb support.
> 
> Without hugetlb support, vma_(kernel|mmu)_pagesize() will always return
> PAGE_SIZE instead of using the ->pagesize() result provided by dax-device
> code.
> 
> Fix that by moving vma_kernel_pagesize() to core MM code, where it belongs.
> I don't think this is stable material, but am not 100% sure.
> 
> Also, move vma_mmu_pagesize() while at it. Remove the unnecessary hugetlb.h
> inclusion from KVM code.
> 
> Cross-compiled heavily.
> 
> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> Cc: Madhavan Srinivasan <maddy@xxxxxxxxxxxxx>
> Cc: Nicholas Piggin <npiggin@xxxxxxxxx>
> Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
> Cc: "Christophe Leroy (CS GROUP)" <chleroy@xxxxxxxxxx>
> Cc: Muchun Song <muchun.song@xxxxxxxxx>
> Cc: Oscar Salvador <osalvador@xxxxxxx>
> Cc: Lorenzo Stoakes <ljs@xxxxxxxxxx>
> Cc: "Liam R. Howlett" <Liam.Howlett@xxxxxxxxxx>
> Cc: Vlastimil Babka <vbabka@xxxxxxxxxx>
> Cc: Mike Rapoport <rppt@xxxxxxxxxx>
> Cc: Suren Baghdasaryan <surenb@xxxxxxxxxx>
> Cc: Michal Hocko <mhocko@xxxxxxxx>
> Cc: Jann Horn <jannh@xxxxxxxxxx>
> Cc: Pedro Falcato <pfalcato@xxxxxxx>
> Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
> Cc: Dan Williams <dan.j.williams@xxxxxxxxx>

Although we all love less mail, FYI it seems like this didn't work properly
for the patches (no CC's on there).

Did you try git-email --cc-cover?

-- 
Pedro