linux-kernel - Re: linux-next: build warninga in Linus' tree

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Date:	Fri, 3 Jun 2011 12:38:42 +0100
From:	Hugo Mills <hugo-lkml@...fax.org.uk>
To:	Mitch Harder <mitch.harder@...ayonlinux.org>, dave@...os.cz,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Chris Mason <chris.mason@...cle.com>,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-btrfs@...r.kernel.org, kreijack@...ero.it
Subject: Re: linux-next: build warninga in Linus' tree

On Fri, Jun 03, 2011 at 01:10:49PM +0200, David Sterba wrote:
> On Wed, Jun 01, 2011 at 10:16:48AM -0500, Mitch Harder wrote:
> > I've been playing around with resurrecting the basic sysfs
> > capabilities that had been previously incorporated into btrfs.
> > 
> > As it stands right now, it was relatively easy to re-implement sysfs
> > as it was originally.  However, that implementation of sysfs wasn't
> > populated with much information (only total_blocks, blocks_used, and
> > blocksize).
> 
> Goffredo Baroncelli (CCed) posted a patch to enhance sysfs interface:
> 
> https://patchwork.kernel.org/patch/308902/
> (http://www.spinics.net/lists/linux-btrfs/msg06777.html)
> 
> > I also had to reverse a small portion of code that was in the last
> > clean-up.
> 
> Restoring the code should not be a problem, the cleanup was too eager
> and I think a sysfs inteface would be good, not only for debugging
> purposes or tuning.

   Indeed. There's a few parts of the balance API that would be
significantly enhanced by being able to put things in sysfs. I could
drop at least one (if not two) of the three ioctls if I had somewhere
in sysfs to put the relevant files.

   Hugo.

-- 
=== Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk ===
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