On Wed, Mar 02, 2016 at 07:34:22PM +0000, Keith Busch wrote: > This looks good too, though I think patch 2/5 in this series on its > own should have fixed the transfer issues for NVMe. AFAICT, the only > reason the iterator couldn't be fully copied into a single bio is if > blk_add_pc_page already hit a queue limit, and blk_rq_append_bio would > fail for the same reason. For requests <= 1MB that's true. But the firmware dump is using larger transfers, and unless we can merge enough fragments we're still going to need multiple bios. -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html