Re: [PATCH 5/5] virtio-blk: Consider virtio_max_dma_size() for maximum segment size

On Thu, Jan 24, 2019 at 09:40:11AM +0100, Joerg Roedel wrote:

quoted

I wonder if we should just move the dma max segment size check
into blk_queue_max_segment_size so that all block drivers benefit
from it.  Even if not I think at least the SCSI midlayer should
be updated to support it.

In that case the limit would also apply to virtio-blk even if it doesn't
use the DMA-API. If that is acceptable we can move the check to
blk_queue_max_segment_size().

Yes.  But more importantly it would fix the limit for all other block
drivers that set large segment sizes when running over swiotlb.