On Sun, Dec 16, 2018 at 10:25:14AM +0800, Ming Lei wrote: > If we don't have poll queue, its mapping should share default type's, > instead of setting up one new mapping via blk_mq_map_queues(). No, if we don't have poll queues nr_maps should be 2. I've already posted a patch for that for nvme-pci which got it wrong (my fault..)