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Date: Thu, 18 Sep 2008 01:47:33 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Martin Knoblauch <knobi@knobisoft.de>
Cc: Greg Banks <gnb@melbourne.sgi.com>,
       linux-nfs list <linux-nfs@vger.kernel.org>,
       linux-kernel@vger.kernel.org, Peter zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: [RFC][Resend] Make NFS-Client readahead tunable
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On Thu, 18 Sep 2008 01:38:57 -0700 (PDT) Martin Knoblauch <knobi@knobisoft.de> wrote:

> > No.  mount(8) will pass unrecognised options straight down into the
> > filesystem driver.
> >
> 
>  Has that always been the case, or is it a recent change? I have to support RHEL4 userland, which is not really new.

It's been that way for ever and ever.  It's how all these guys:

y:/usr/src/25> grep Opt_ fs/*/super.c|wc
    781    2626   33703

get handled.