Re: [PATCH v9 02/13] mm/gup: drop secretmem optimization from gup_fast_folio_allowed

[David Hildenbrand (Red Hat)]

On 1/14/26 14:45, Kalyazin, Nikita wrote:
> From: Patrick Roy <patrick.roy@xxxxxxxxx>
>
> This drops an optimization in gup_fast_folio_allowed() where
> secretmem_mapping() was only called if CONFIG_SECRETMEM=y. secretmem is
> enabled by default since commit b758fe6df50d ("mm/secretmem: make it on
> by default"), so the secretmem check did not actually end up elided in
> most cases anymore anyway.
>
> This is in preparation of the generalization of handling mappings where
> direct map entries of folios are set to not present.  Currently,
> mappings that match this description are secretmem mappings
> (memfd_secret()).  Later, some guest_memfd configurations will also fall
> into this category.
>
> Signed-off-by: Patrick Roy <patrick.roy@xxxxxxxxx>
> Acked-by: Vlastimil Babka <vbabka@xxxxxxx>
> Signed-off-by: Nikita Kalyazin <kalyazin@xxxxxxxxxx>

Acked-by: David Hildenbrand (Red Hat) <david@xxxxxxxxxx>

--
Cheers

David