Re: [PATCH RFC 09/22] block, cfq: replace CFQ with the BFQ-v0 I/O scheduler

[Christoph Hellwig]

On Fri, Mar 11, 2016 at 01:24:24PM +0200, Nikolay Borisov wrote:
> Out of curiosity - would it make sense to have something like BFQ/CFQ
> for single-queue blk-mq users?

The mess that CFQ is certainly not.  But we want to eventually be able
to get rid of the legacy request code, so we need suitable I/O
scheduling.  See the threads at: https://lkml.org/lkml/2015/11/19/227 or
http://thread.gmane.org/gmane.linux.scsi/111257/focus=111320 for more
details.  A leightweight bfq-like scheduler might come in handy on top
of Andreas' time slicing work.