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

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Date:	Thu, 14 Oct 2010 14:03:10 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Dave Chinner <david@...morbit.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 10/14/10 13:55, Dave Chinner wrote:
> 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

That patch series does not modify any Kconfig files.
That change can be done separately and at another time.

Thanks for the pointer.
-- 
~Randy
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