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From:   Justin Forbes <jforbes@redhat.com>
Date:   Thu, 27 May 2021 09:12:01 -0500
Message-ID: <CAFbkSA1G2ajKQg4eA947dv0Pcmyf-JQbkn8-jYnmUeMAEpfHtw@mail.gmail.com>
Subject: Re: [PATCH] io_uring: Remove CONFIG_EXPERT
To:     Jens Axboe <axboe@kernel.dk>
Cc:     asml.silence@gmail.com, io-uring@vger.kernel.org,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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On Thu, May 27, 2021 at 8:43 AM Jens Axboe <axboe@kernel.dk> wrote:
>
> On 5/26/21 4:34 PM, Justin M. Forbes wrote:
> > While IO_URING has been in fairly heavy development, it is hidden behind
> > CONFIG_EXPERT with a default of on.  It has been long enough now that I
> > think we should remove EXPERT and allow users and distros to decide how
> > they want this config option set without jumping through hoops.
>
> The whole point of EXPERT is to ensure that it doesn't get turned off
> "by accident". It's a core feature, and something that more and more
> apps or libraries are relying on. It's not something I intended to ever
> go away, just like it would never go away for eg futex or epoll support.
>

I am not arguing with that, I don't expect it will go away. I
certainly do not have an issue with it defaulting to on, and I didn't
even submit this with intention to turn it off for default Fedora. I
do think that there are cases where people might not wish it turned on
at this point in time. Hiding it behind EXPERT makes it much more
difficult than it needs to be.  There are plenty of config options
that are largely expected default and not hidden behind EXPERT.

Justin