Re: [PATCH] block: kyber: make kyber more friendly with merging

[jianchao.wang]

Hi ming

On 05/30/2018 05:13 PM, Ming Lei wrote:
>> Yes, it maybe good for merging of 'none', because the rq_list is split into 3
>> lists, and not need to iterate the whole rq_list any more.
>> But what's about the dispatch when there is no io scheduler.
> blk_mq_flush_busy_ctxs() and blk_mq_dequeue_from_ctx() should work
> fine in case of 'none' if per-domain list is added to ctx. Then we can make
> none to be a bit fair on READ/WRITE.
> 

But how to determine when to dispatch READ, WRITE or other more, when there is no io scheduler ?

Thanks
Jianchao