Re: The future of PageAnonExclusive

Matthew Wilcox
2024-12-11T16:12:00Z

On Wed, Dec 11, 2024 at 04:50:12PM +0100, David Hildenbrand wrote:
> On 11.12.24 16:45, Matthew Wilcox wrote:
> > [1] https://kernelnewbies.org/MatthewWilcox/Memdescs
> >
> > Don't get too excited about "we're almost out of types". The "managed"
> > type has subtypes. We could also collapse "file" and "anon" into a
> > single type and distinguish between them with a bit in the folio.
> >
> > Anyway, yes, we can do one per-page flag. Two per-page flags starts to
> > get dicey.
>
> hwpoison? :/

type 9! My thinking is that the hwpoison type contains an orig_memdesc
field, as well as whatever else is needed to describe the hwpoison that
was discovered (start, length, what else?)