Re: [PATCH v2 0/3] mm: reject zone device folios in more folio walkers

[Gregory Price]

On Sun, Aug 30, 2026 at 03:47:51PM +0800, Lance Yang wrote:
> 
> If folks think it's worth having, I can send it as a follow-up :)
> 
> ---8<---
> Subject: [PATCH] mm/huge_memory: don't split device-coherent folios
> 

First - thank you for testing, I was struggling to figure out a way to
test this and I somehow missed your email where you managed it.

Second - I think the split checks are worth it.  As I've worked through
my private node series, I've learned there are at least a handful of
missing zone device hooks throughout mm - but there is a lot of nuance
between the modes that is frustrating to keep straight.

Every zone device patch helps clarify how coherent-link accelerators
might manage its memory as a numa node, so at the very least I
appreciate it.

~Gregory