linux-kernel - Re: [xfs-masters] [PATCH -next] xfs: eliminate kconfig dependency warning

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Date:	Fri, 15 Oct 2010 07:55:02 +1100
From:	Dave Chinner <david@...morbit.com>
To:	Randy Dunlap <randy.dunlap@...cle.com>
Cc:	Christoph Hellwig <hch@....de>, xfs-masters@....sgi.com,
	lkml <linux-kernel@...r.kernel.org>,
	akpm <akpm@...ux-foundation.org>
Subject: Re: [xfs-masters] [PATCH -next] xfs: eliminate kconfig dependency
 warning

On Thu, Oct 14, 2010 at 10:18:19AM -0700, Randy Dunlap wrote:
> On 10/14/10 02:25, Christoph Hellwig wrote:
> > On Wed, Oct 13, 2010 at 09:01:42PM -0700, Randy Dunlap wrote:
> >> From: Randy Dunlap <randy.dunlap@...cle.com>
> >>
> >> Fix kconfig dependency warning to satisfy dependencies:
> >>
> >> warning: (XFS_FS && BLOCK || NFSD && NETWORK_FILESYSTEMS && INET && FILE_LOCKING && BKL) selects EXPORTFS which has unmet direct dependencies (NETWORK_FILESYSTEMS)
> > 
> > I'm not entirely sure what this gibberish means, but I'm pretty sure it
> > does not make sense.
> > 
> > EXPORTFS is a small module that doesn't have any dependencie, and it's
> > needed by XFS for the by-handle operation, and by nfsd for the same
> > thing.  It has absolutely nothing to do with networking or network
> > filesystems (as in network filesystem clients).
> 
> The (kconfig) warning/problem is that exportfs is in the Networking Filesystems menu,
> under the kconfig symbol NETWORK_FILESYSTEMS.

Thanks for the explanation, Randy.

> Dave Chinner wrote:
> | EXPORTFS functionality actually has use for local filesystems - the
> | open-by-handle interfaces in XFS are what uses it, and there are patches
> | about that make this generic for most filesystems. Hence it seems to
> | me that the correct thing to do is separate EXPORTFS from
> | NETWORK_FILESYSTEMS, not make local filesystems depend on a user
> | selecting network filesystem support....
> 
> Agreed.  Is that Kconfig change also part of the "patches about"?

I can't remember exactly what it does with the kconfig symbols.
Information about the patch series (including a link to the git repo
storing the changes) is here:

http://marc.info/?l=linux-fsdevel&m=128627415827161&w=2

Cheers,

Dave.
-- 
Dave Chinner
david@...morbit.com
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