Re: [PATCH bpf] lib/buildid: handle memfd_secret() files in build_id_parse()

[Yosry Ahmed <yosryahmed@xxxxxxxxxx>]

On Wed, Oct 16, 2024 at 11:39 AM Shakeel Butt <shakeel.butt@xxxxxxxxx> wrote:
>
> Ccing couple more folks who are doing similar work (ASI, guest_memfd)
>
> Folks, what is the generic way to check if a given mapping has folios
> unmapped from kernel address space?

I suppose you mean specifically if a folio is not mapped in the direct
map, because a folio can also be mapped in other regions of the kernel
address space (e.g. vmalloc).