[PATCH v6 1/5] mm/zone_device: Reinitialize large zone device private folios

[Alistair Popple]

On 2026-01-23 at 08:41 +1100, Andrew Morton <akpm at linux-foundation.org> wrote...
> On Thu, 22 Jan 2026 20:10:44 +1100 Balbir Singh <balbirs at nvidia.com> wrote:
> 
> > >> - Intel has demonstrated that this works and is still getting blocked.
> > >>
> > >> - This entire thread is about a fixes patch for large device pages.
> > >>   Changing prep_compound_page is completely out of scope for a fixes
> > >>   patch, and honestly so is most of the rest of what’s being proposed.
> > > 
> > > FWIW I'm ok if this lands as a fix patch, and perceived the discussion to be
> > > about how refactor things more properly afterwards, going forward.
> > > 
> > 
> > I've said the same thing and I concur, we can use the patch as-is and
> > change this to set the relevant identified fields after 6.19
> 
> So the plan is to add this patch to 6.19-rc and take another look at
> patches [2-5] during next -rc cycle?

I'm ok with this as a a quick fix, and happy to take a look at cleaning this up
in the next cycle or two as it's been on my TODO list for a while anyway.

> I think the plan is to take Matthew's work via the DRM tree?  But if people
> want me to patchbunny this fix then please lmk.
> 
> I presently have
> 
> Signed-off-by: Matthew Brost <matthew.brost at intel.com>
> Signed-off-by: Francois Dugast <francois.dugast at intel.com>
> Acked-by: Felix Kuehling <felix.kuehling at amd.com>
> Reviewed-by: Balbir Singh <balbirs at nvidia.com>
> 
> If people wish to add to this then please do so.
> 
> I'll restore this patch into mm.git's hotfix branch (and hence
> linux-next) because testing.