From mboxrd@z Thu Jan  1 00:00:00 1970
From: Cyrill Gorcunov <gorcunov@openvz.org>
Subject: Re: [patch 3/8] procfs: Add ability to plug in auxiliary fdinfo
 providers
Date: Thu, 16 Aug 2012 01:34:49 +0400
Message-ID: <20120815213449.GQ23657@moon>
References: <20120815092116.700948346@openvz.org>
 <20120815092409.507162379@openvz.org>
 <20120815212927.GO23464@ZenIV.linux.org.uk>
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Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	Alexey Dobriyan <adobriyan@gmail.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Pavel Emelyanov <xemul@parallels.com>,
	James Bottomley <jbottomley@parallels.com>,
	Matthew Helsley <matt.helsley@gmail.com>
To: Al Viro <viro@ZenIV.linux.org.uk>
Return-path: <linux-kernel-owner@vger.kernel.org>
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List-Id: linux-fsdevel.vger.kernel.org

On Wed, Aug 15, 2012 at 10:29:27PM +0100, Al Viro wrote:
> 
> This, BTW, is too convoluted for its own good.  What you need is
> something like
> struct whatever {
> 	struct seq_file *m;
> 	struct file *f;
> 	int flags;
> };
> with single allocation of that sucker in your ->open().  Set
> file->private_data to address of seq_file field in your object *before*
> calling seq_open() and don't bother with m->private at all - just use
> container_of(m, struct whatever, m) in your ->show() to get to that
> structure...

I will try and post results, thanks!

	Cyrill