Il giorno 11 set 2019, alle ore 16:16, Tejun Heo [off-list ref] ha scritto:

Hello,

On Wed, Sep 11, 2019 at 10:18:53AM +0200, Paolo Valente wrote:

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The two being enabled at the same time doesn't make sense, so we can
just switch over to bfq when bfq is selected as the iosched.  I asked
what Paolo wanted to do in terms of interface a couple times now but
didn't get an answer and he posted a patch which makes the two
controllers conflict, so....  Paolo, so it looks like you want to
rename all bfq files to drop the bfq prefix, right?

Yep, mainly because ... this is the solution you voted and you
yourself proposed [1] :)

[1] https://patchwork.kernel.org/patch/10988261/

So, that was then.  Since then the interface change has been published
and userspace, at least some of them, already had to adjust.  Now, I
don't have any opinion on the matter and flipping again will cause
inconveniences to some subset of users.  It's your call.

Ok, then let's go for removing bfq prefix, as expected, e.g., by
systemd community [1].  A few days ago I reposted a patch removing the
prefix from all involved parameters [2], it should make all legacy
software work again.

[1] https://github.com/systemd/systemd/issues/7057
[2] https://lkml.org/lkml/2019/9/9/47

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I can implement
the switching if so.

That would be perfect.

Whichever way it gets decided, this is easy enough.  I'll prep a
patch.

Thank you for that too,
Paolo

Thanks.

-- 
tejun