Re: [PATCH v2 05/46] mm: Add arch_make_folio_accessible()

[Christoph Hellwig]

On Thu, Jun 24, 2021 at 04:57:29PM +0100, Matthew Wilcox wrote:
> On Wed, Jun 23, 2021 at 10:00:37AM +0200, Christoph Hellwig wrote:
> > On Tue, Jun 22, 2021 at 01:15:10PM +0100, Matthew Wilcox (Oracle) wrote:
> > > As a default implementation, call arch_make_page_accessible n times.
> > > If an architecture can do better, it can override this.
> > > 
> > > Also move the default implementation of arch_make_page_accessible()
> > > from gfp.h to mm.h.
> > 
> > Can we wait with introducing arch hooks until we have an actual user
> > lined up?
> 
> This one gets used in __folio_end_writeback() which is patch 24 in this
> series.

With arch hook I mean the ifdef to allow the architeture to override
the folio function.  Same for the previous patch, btw.