Hi Jens On 10/26/18 5:16 AM, Jens Axboe wrote: > It's just a pointer to set->mq_map, use that instead. Instead of using the set->mq_map and then a two-dimensional set->mq_map, how about migrate the mq_map from per-set to per-cpuctx ? something like: q->queue_hw_ctx[ctx->map[type]] Thanks Jianchao