linux-kernel - Re: Linux 2.6.22-rc1

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Date:	Mon, 14 May 2007 21:17:04 +0100
From:	Christoph Hellwig <hch@...radead.org>
To:	Jean Delvare <khali@...ux-fr.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Antonino Ingargiola <tritemio@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Linux 2.6.22-rc1

On Mon, May 14, 2007 at 09:28:07PM +0200, Jean Delvare wrote:
> > And we really complained about it! The oprofile thing should be fixed, 
> > btw, and yeah,if udev breaks any more, I'll have to stop taking patches 
> > from Greg. That thing has been a disaster, and everybody involved should 
> > be ashamed and now hopefully *very* aware of the fact that we don't break 
> > user-level interfaces.
> > 
> > (Right now, I suspect we may have a loop setup regression. Not sure)
> 
> While I'm all for keeping things relatively stable and not asking the
> user to constantly upgrade user-space, I believe that we just can't
> promise to never break user-level interfaces while keeping the
> development pace we have right now. We can promise to grant people
> significant delay before we drop compatibility options, but "forever"
> doesn't scale.

never with a loong deprecations period.  At least for APIs that are not
private to a single obscure driver.  But this would require people actually
beeing aware of creating ABIs, and maybe someone with half a clue reviewing
them. Which of course is not the case today, thanks to ioctls, procfs, sysfs,
debugfs and co people can create userspace ABIs without a single though
easily, and they happily do it.

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