On Thu, Mar 28, 2019 at 05:31:29PM +0100, Johannes Thumshirn wrote: > In all cases I could reproduce it I had nsegs == 2 and > rq->nr_phys_segments == 1 (rq->bio->bi_phys_segments == 1).
And all cases are pass through as well? Can you check if this still shows up with the series from Ming which switches the passthrough requests to use multi-page biovecs aswell and gets rid of the hairy code you quote below.
