[PATCH 08/12] mm/pgtable: add pte_free_defer() for pgtable as page

[Jason Gunthorpe]

On Thu, Jun 01, 2023 at 11:03:11PM -0700, Hugh Dickins wrote:
> > I was hoping Mathew's folio conversion would help clarify this..
> 
> I doubt that: what we have for use today is pages, however they are
> dressed up.

I mean the part where Matthew is going and splitting the types and
making it much clearer and type safe how the memory is layed out. eg
no more guessing if the arch code is overlaying something else onto
the rcu_head.

Then the hope against hope is that after doing all this we can find
enough space for everything including the rcu heads..

Jason