Date: Tue, 14 Apr 2015 20:35:33 +0100
From: Al Viro <viro@ZenIV.linux.org.uk>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Arnd Bergmann <arnd@arndb.de>,
        "Eric W. Biederman" <ebiederm@xmission.com>,
        One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>,
        Tom Gundersen <teg@jklm.no>, Jiri Kosina <jkosina@suse.cz>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Daniel Mack <daniel@zonque.org>,
        David Herrmann <dh.herrmann@gmail.com>,
        Djalal Harouni <tixxdz@opendz.org>
Subject: Re: [GIT PULL] kdbus for 4.1-rc1
Message-ID: <20150414193533.GF889@ZenIV.linux.org.uk>
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 <CALCETrVoLO2Py5OY7wyn4MBcqB7VEs5DU4E2ThVSUc8kkwR3cg@mail.gmail.com>
 <20150414175019.GA2874@kroah.com>
 <CALCETrXvXWbzsh5AuQg4Cs+uq37yoky5z6j4HH7R9H2A9GMJbQ@mail.gmail.com>
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On Tue, Apr 14, 2015 at 09:23:57PM +0200, Greg Kroah-Hartman wrote:

> > I agree.  You've sent a pull request for an unfortunate design.  I
> > don't think that unfortunate design belongs in the kernel.  If it says
> > in userspace, then user programmers could potentially fix it some day.
> 
> You might not like the design, but it is a valid design.  Again, we
> don't refuse to support hardware that is designed badly.  Or support
> protocols we don't necessarily like, that's not the job of a kernel or
> operating system.

Bullshit.  The problem you seem to deliberately ignore is that once it's
in the kernel, it's impossible to eradicate.  It's not just a crap design,
it's a crap design you are taking in as-is.

And no, "the sole consumer of that API knows better, so bend over" is not
a good idea.  We have shitloads of examples when single-consumer APIs
turned into screaming horrors; taking that in over the objections to API
design, merely on "they do it that way, who the hell we are to say they
are wrong?" is insane.
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