[PATCH v4 02/14] iov_iter: add iterator type for dmabuf maps

[Christoph Hellwig]

On Tue, Jul 28, 2026 at 10:29:14PM +0100, Pavel Begunkov wrote:
> Introduce a new iterator type for dmabuf maps. The map in an opaque
> object with internals and format specific to the subsystem / driver, and
> only it can use that subsystem / driver for issuing IO. The task of the
> middle layers is to pass the map / iterator further down, maybe doing
> basic splitting and length checking. The iterator can only be used by
> operations of the file the associated map was created for.
> 
> Suggested-by: Keith Busch <kbusch at kernel.org>
> Signed-off-by: Pavel Begunkov <asml.silence at gmail.com>

Looks good:

Reviewed-by: Christoph Hellwig <hch at lst.de>

I'm also pretty sure I reviewed this and vairous other patches
before..