Re: elevator= kernel argument for recent kernels

[Jeff Moyer <jmoyer@redhat.com>]

Jan Kara <jack@suse.cz> writes:

> Hello,
>
> with transition to blk-mq, the elevator= kernel argument was removed. I
> understand the reasons for its removal but still I think this may come as a
> surprise to some users since that argument has been there for ages and
> although distributions generally transition to setting appropriate elevator
> by udev rules, there are still people that use that argument with older
> kernels and there are quite a few advices on the Internet to use it. So
> shouldn't we at least warn loudly if someone uses elevator= argument on
> kernels that don't support it and redirect people to sysfs? Something like
> the attached patch? What do people think?

That's fine with me.

Reviewed-by: Jeff Moyer <jmoyer@redhat.com>