Re: [PATCH 6/9] iommufd: Have pfn_reader process DMABUF iopt_pages

[Nicolin Chen]

On Fri, Nov 07, 2025 at 12:49:38PM -0400, Jason Gunthorpe wrote:
> Make another sub implementation of pfn_reader for DMABUF. This version
> will fill the batch using the struct phys_vec recorded during the
> attachment.
> 
> Signed-off-by: Jason Gunthorpe <j...@nvidia.com>

Reviewed-by: Nicolin Chen <nicol...@nvidia.com>

> @@ -1687,6 +1737,12 @@ static void __iopt_area_unfill_domain(struct iopt_area 
> *area,
>  
>       lockdep_assert_held(&pages->mutex);
>  
> +     if (iopt_is_dmabuf(pages)) {
> +             iopt_area_unmap_domain_range(area, domain, start_index,
> +                                          last_index);
> +             return;
> +     }

Should it be:
        if (iopt_is_dmabuf(pages) && !iopt_dmabuf_revoked(pages)) {
?

Nicolin