netdev - Re: [RFC PATCH 0/5] SUNRPC: "RPC pipefs per network namespace" preparations

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Date:	Thu, 20 Oct 2011 08:32:42 -0400
From:	"bfields@...ldses.org" <bfields@...ldses.org>
To:	Stanislav Kinsbursky <skinsbursky@...allels.com>
Cc:	"Trond.Myklebust@...app.com" <Trond.Myklebust@...app.com>,
	"linux-nfs@...r.kernel.org" <linux-nfs@...r.kernel.org>,
	Pavel Emelianov <xemul@...allels.com>,
	"neilb@...e.de" <neilb@...e.de>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"devel@...nvz.org" <devel@...nvz.org>
Subject: Re: [RFC PATCH 0/5] SUNRPC: "RPC pipefs per network namespace"
 preparations

On Thu, Oct 20, 2011 at 03:06:46PM +0400, Stanislav Kinsbursky wrote:
> Guys, please, spend some of your expensive time to review this patch-set briefly.

I'll try to take a look soon, but I'm travelling tomorrow through the
31st, and things will be a little hectic.

Just one quick comment:

> >The only problem about I'm not sure how to solve properly yet, is auth gss
> >pipes creations operations. Hoping for some help with it.

I suspect one reason it may be a little complicated is the
upcall-version switching.  The old version is deprecated, and there's no
need to support the combination of the old version with the a new
feature like containers.  And now that it's been there a while the
version-switching code already achieved its goal of avoiding a flag day.
So, one approach might be:

	- move all the code for the old gss upcall and for the version
	  switching under a new CONFIG_DEPRECATED_GSS, or similar.
	- print a warning if the old stuff is used, and plan to rip it
	  out completely in a future kernel version.
	- do something that works just in the !CONFIG_DEPRECATED_GSS
	  case.

Would that help?

--b.
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