From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH v3 resend] procfs: Improve Scaling in proc
Date: Fri, 15 Feb 2013 15:44:47 -0800
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	<20130215141239.99a3bccc.akpm@linux-foundation.org>
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Cc: <viro@zeniv.linux.org.uk>, <eric.dumazet@gmail.com>,
	<linux-kernel@vger.kernel.org>, <linux-fsdevel@vger.kernel.org>,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	David Woodhouse <dwmw2@infradead.org>,
	Alexey Dobriyan <adobriyan@gmail.com>,
	"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: Nathan Zimmer <nzimmer@sgi.com>
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On Fri, 15 Feb 2013 17:39:38 -0600
Nathan Zimmer <nzimmer@sgi.com> wrote:

> > So are all these games with local variable `llseek' still needed?
> > afaict the increment of pde_users will stabilize ->fops?
> We still are setting de->proc_fops to NULL to prevent new callers.
> Also we still have to save fops-> since we cannot use fops outside the 
> rcu_read_un/lock.
> Unless I misunderstood your question.

ah, so we are.