linux-kernel - Re: Driver-Core: devtmpfs - remove EXPERIMENTAL and enable it by default

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Date:	Thu, 21 Jan 2010 08:37:42 -0800
From:	Greg KH <greg@...ah.com>
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	Kay Sievers <kay.sievers@...y.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: Driver-Core: devtmpfs - remove EXPERIMENTAL and enable it by
 default

On Wed, Jan 20, 2010 at 10:05:53PM -0800, Arjan van de Ven wrote:
> On Wed, 20 Jan 2010 18:53:49 +0100
> Kay Sievers <kay.sievers@...y.org> wrote:
> 
> > On Sun, Jan 17, 2010 at 15:58, Arjan van de Ven <arjan@...radead.org>
> > wrote:
> > > On Fri, 15 Jan 2010 10:03:41 -0800
> > > Greg KH <greg@...ah.com> wrote:
> > >> > removing experimental is fine... but setting it by default is a
> > >> > bit over the top and very inconsistent with how the 'default'
> > >> > option is used.
> > >>
> > >> Why?
> > >
> > > because the convention is that we use "default y" only for those
> > > things that used to be on, and are now turned into a config option.
> > 
> > Oh, I never heard of such a convention. Sure, we can remove that "y",
> > if this is the way it should be used, not be used.
> 
> For example in (this is just the first one google found, there's been a
> bunch of discussion at various times)
> 
> http://article.gmane.org/gmane.linux.kernel/706458
> 
> Linus was rather explicit:
> 
> The rule of thumb should be:
> 
> 	NO NEW FEATURES SHOULD _EVER_ DEFAULT TO 'ON'!

But this is not a "new" feature, it's been around for 6+ months by the
time it hits a release.  Does this imply that we can never change
anything to 'on' in the Kconfig files?

thanks,

greg k-h
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