On Wed, Apr 13, 2016 at 03:54:22PM -0400, Tejun Heo wrote:
> On Fri, Mar 04, 2016 at 09:39:47AM -0800, Christoph Hellwig wrote:

> > Btw, can someone explain why you guys waste so much time hacking and
> > arguing about a legacy codebase (old request code and I/O schedulers)
> > that everyone would really like to see disappear.  Why don't you
> > spend your time on blk-mq where you have an entirely clean slate
> > for scheduling?

> idk, are we gonna duplicate a full disk scheduler on blk-mq path?  I
> think it'd be more sensible to make blk-mq call into the old elevator
> path for scheduling IOs on rotating rusts.

It's not just rust, it's also lower end solid state devices.