linux-kernel - Re: [PATCH] sunrpc: prompt for RPCSEC_GSS_KRB5 even if NFS

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Date:	Mon, 27 Sep 2010 07:39:32 -0400
From:	Trond Myklebust <Trond.Myklebust@...app.com>
To:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
Cc:	linux-kernel@...r.kernel.org,
	"J. Bruce Fields" <bfields@...ldses.org>,
	Neil Brown <neilb@...e.de>,
	"David S. Miller" <davem@...emloft.net>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	linux-nfs@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH] sunrpc: prompt for RPCSEC_GSS_KRB5 even if NFS_V4 is
 enabled

On Mon, 2010-09-27 at 12:41 +0200, Uwe Kleine-König wrote:
> NFS_V4 works fine without RPCSEC_GSS_KRB5 (even without CRYPTO).
> This dependency was introduced in
> 
> 	df486a2 (NFS: Fix the selection of security flavours in Kconfig)
> 
> to fix a build failure as RPCSEC_GSS_KRB5 was thought to be needed for
> NFS_V4.  The fix didn't work completely as NFS_V4 didn't enforce CRYPTO
> and so the select on RPCSEC_GSS_KRB5 didn't work in all situations (e.g.
> arm/mx1_defconfig).
> 
> This was rectified by
> 
> 	827e345 (SUNRPC: Fix the NFSv4 and RPCSEC_GSS Kconfig dependencies)
> 
> but the magic for RPCSEC_GSS_KRB5 introduced by df486a2 wasn't reverted.
> 
> Cc: Trond Myklebust <Trond.Myklebust@...app.com>
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
> ---
> Hello,
> 
> after Trond sent me the patch that later ended in 827e345702 I suggested
> to fold the patch below into it[1], but without reaction and success as I
> noticed just now. :-(
> 
> Best regards
> Uwe

That's because you completely fail to justify why should we change the
behaviour to suddenly make RPCSEC_GSS_KRB5 optional for NFSv4. That has
never been the case before.

Trond
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