linux-kernel - Re: LogFS merge

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Message-ID: <20080503110631.GJ5838@cs181133002.pp.htv.fi>
Date:	Sat, 3 May 2008 14:06:31 +0300
From:	Adrian Bunk <bunk@...nel.org>
To:	Pekka Enberg <penberg@...helsinki.fi>
Cc:	Willy Tarreau <w@....eu>,
	Jörn Engel <joern@...fs.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Andrew Morton <akpm@...ux-foundation.org>,
	David Woodhouse <dwmw2@...radead.org>,
	Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org
Subject: Re: LogFS merge

On Sat, May 03, 2008 at 12:44:12PM +0300, Pekka Enberg wrote:
> Hi Adrian,
> 
> On Sat, May 3, 2008 at 12:11 PM, Adrian Bunk <bunk@...nel.org> wrote:
> > > Why not merge it and mark it experimental then ? In fact, this is about
> > > what you're looking for : reduced merge hassle and more testers.
> >
> >  Andi already answered that one:
> >
> > "Merging file systems too early can quickly ruin their name and that
> >   taint is hard to ever get rid again then (e.g. happened to JFS)"
> >
> >  And a stable kernel shouldn't be something for getting "more testers",
> >  it should be for tested code ready to be used in production.
> >  What you call "more testers" would be people who try it in production
> >  (e.g. to overcome shortcomings of JFFS2) thinking it was stable.
> >
> >  And no, EXPERIMENTAL in the kernel is not usable for keeping people from
> >  trying known-whacky code.
> 
> I think ext4 already set the precedent that you _can_ do development
> within the 2.6 series, no?

I'd call the ext4 case a mistake we shouldn't repeat.

It's available in the kernel since 2006.

I've seen people using ext4 on their computers running with a corrupted 
filesystem since fsck was at that point not yet capable of fixing 
whatever was corrupted.

At least one distribution already has ext4 enabled in their kernels.

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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