netdev - Re: [PATCH v2 00/12] make rpc_pipefs be mountable multiple time

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Message-ID: <20110107111927.GB19395@shutemov.name>
Date:	Fri, 7 Jan 2011 13:19:27 +0200
From:	"Kirill A. Shutemov" <kas@...nvz.org>
To:	Al Viro <viro@...IV.linux.org.uk>
Cc:	Trond Myklebust <Trond.Myklebust@...app.com>,
	"J. Bruce Fields" <bfields@...ldses.org>,
	Neil Brown <neilb@...e.de>,
	Pavel Emelyanov <xemul@...allels.com>,
	linux-nfs@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 00/12] make rpc_pipefs be mountable multiple time

On Fri, Jan 07, 2011 at 01:12:22PM +0200, Kirill A. Shutemov wrote:
> On Wed, Jan 05, 2011 at 11:41:55AM +0000, Al Viro wrote:
> > On Wed, Dec 29, 2010 at 03:14:18PM +0200, Kirill A. Shutemov wrote:
> > > Prepare nfs/sunrpc stack to use multiple instances of rpc_pipefs.
> > 
> > Won't that make sunrpc impossible to rmmod once you've got it in?
> > Note that having a reference to vfsmount pins it down, which pins
> > the superblock down, which pins the file_system_type down, which
> > pins the damn module down.  So cleanup_sunrpc() won't be ever called,
> > AFAICS...
> 
> Hm.. rpc_pipe_fs_type.owner = NULL seems fix the problem.
> Is it valid solution in this case?

Please, ignore it. :)

-- 
 Kirill A. Shutemov
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