Re: [PATCH v2 20/28] gup: Convert gup_pte_range() to use a folio

[Christoph Hellwig]

On Mon, Jan 10, 2022 at 04:23:58AM +0000, Matthew Wilcox (Oracle) wrote:
> We still call try_grab_folio() once per PTE; a future patch could
> optimise to just adjust the reference count for each page within
> the folio.

Looks good,

Reviewed-by: Christoph Hellwig <hch@xxxxxx>