On Sat, 2017-08-05 at 14:56 +0800, Ming Lei wrote: > This patch introduces per-request_queue dispatch > list for this purpose, and only when all requests > in this list are dispatched out successfully, we > can restart to dequeue request from sw/scheduler > queue and dispath it to lld. Wasn't one of the design goals of blk-mq to avoid a per-request_queue list? Thanks, Bart.