Re: [PATCH v2 8/9] mm: introduce and use vm_normal_page_pud()

[David Hildenbrand]

On 17.07.25 22:03, Lorenzo Stoakes wrote:
> On Thu, Jul 17, 2025 at 01:52:11PM +0200, David Hildenbrand wrote:
> > Let's introduce vm_normal_page_pud(), which ends up being fairly simple
> > because of our new common helpers and there not being a PUD-sized zero
> > folio.
> >
> > Use vm_normal_page_pud() in folio_walk_start() to resolve a TODO,
> > structuring the code like the other (pmd/pte) cases. Defer
> > introducing vm_normal_folio_pud() until really used.
>
> I mean fine :P but does anybody really use this?

This is a unified PFN walker (!hugetlb + hugetlb), so you can easily run 
into hugetlb PUDs, DAX PUDs and huge pfnmap (vfio) PUDs :)

--
Cheers,

David / dhildenb