On Tue, May 31, 2022 at 12:11:34PM -0700, Keith Busch wrote:

From: Keith Busch <kbusch@kernel.org>

The existing iov_iter_alignment() function returns the logical OR of
address and length. For cases where address and length need to be
considered separately, introduce a helper function that a caller can
specificy length and address masks that indicate if the iov is
unaligned.

Looks good:

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