Re: [PATCHv4 8/9] block: relax direct io memory alignment

[Christoph Hellwig <hch@xxxxxx>]

On Thu, May 26, 2022 at 02:32:12PM -0600, Keith Busch wrote:
> On Thu, May 26, 2022 at 12:55:50PM -0600, Keith Busch wrote:
> > 
> > Let me see how difficult it would be catch it early in blkdev_dio_aligned().
> 
> Something like this appears to work:

This looks reasonable to me.  Nits below:

> +	if (!iov_iter_aligned(iter, bdev_dma_alignment(bdev),
> +			      bdev_logical_block_size(bdev) - 1))

This probably wants a helper so that it can also be reused by e.g.
iomap.