Re: [PATCH v3 5/6] mm: gup: introduce gup_unshared_pages()

[Yeoreum Yun <yeoreum.yun@arm.com>]

Hi Rik,

> On Mon, 2026-11-09 at 12:32 +0000, Yeoreum Yun wrote:
> > This is preparatory patch to make gup_fast_pte_range() batchable.
> > 
> > Introduce gup_unshared_pages() to count consecutive pages within a
> > folio
> > that do not require unsharing, and use it to implement
> > gup_must_unshare().
> > 
> Could gup_exclusive_pages() be a better name?

Yes. This seems much better for me. I'll change it in next-spin.

> 
> The code all looks good, though.

Thanks!

> 
> > Also add a folio argument to gup_must_unshare() so callers can reuse
> > an
> > existing folio and avoid the compound_head() call implicit in
> > PageAnon().
> 
> Does that count as a functional change? ;)

Right. I think it would be better to remove below sentence.
> 
> > 
> > There is no functional change.
> > 
> > Signed-off-by: Yeoreum Yun <yeoreum.yun@arm.com>
> 
> Reviewed-by: Rik van Riel <riel@surriel.com>

Thanks! :)

-- 
Sincerely,
Yeoreum Yun