linux-kernel - Re: [PATCH 06/11] NFSD: Remove NFSv4 dependency on NFSv3

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Message-ID: <20080208202033.GD31984@uranus.ravnborg.org>
Date:	Fri, 8 Feb 2008 21:20:33 +0100
From:	Sam Ravnborg <sam@...nborg.org>
To:	Chuck Lever <chuck.lever@...cle.com>
Cc:	linux-kernel@...r.kernel.org, linux-nfs@...r.kernel.org
Subject: Re: [PATCH 06/11] NFSD: Remove NFSv4 dependency on NFSv3

On Fri, Feb 08, 2008 at 12:52:08PM -0500, Chuck Lever wrote:
> Clean up: Because NFSD_V4 "depends on" NFSD_V3, it appears as a child of
> the NFSD_V3 menu entry, and is not visible if NFSD_V3 is unselected.
> 
> Replace the dependency on NFSD_V3 with a "select NFSD_V3".  This makes
> NFSD_V4 look and work just like NFS_V3, while ensuring that NFSD_V3 is
> enabled if NFSD_V4 is.
> 
> Signed-off-by: Chuck Lever <chuck.lever@...cle.com>
> ---
> 
>  fs/Kconfig |    3 ++-
>  1 files changed, 2 insertions(+), 1 deletions(-)
> 
> diff --git a/fs/Kconfig b/fs/Kconfig
> index 9ad62a9..4c16789 100644
> --- a/fs/Kconfig
> +++ b/fs/Kconfig
> @@ -1723,7 +1723,8 @@ config NFSD_V3_ACL
>  
>  config NFSD_V4
>  	bool "NFS server support for NFS version 4 (EXPERIMENTAL)"
> -	depends on NFSD && NFSD_V3 && EXPERIMENTAL
> +	depends on NFSD && EXPERIMENTAL
> +	select NFSD_V3
>  	select RPCSEC_GSS_KRB5
>  	help
>  	  This option enables support in your system's NFS server for

This use of select is questionable. In general it is bad to select
a symbol with dependencies.
In this case the dependencies of NFSD_V3 are duplicated for NFSD_V4
so we will not se erratic configurations but do you remember to
update NFSD_V4 when you add a depends on NFSD_V3?

But I see no other clean way to do it rithg now.

	Sam
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