From: Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [RFC][Resend] Make NFS-Client readahead tunable
Date: Thu, 18 Sep 2008 01:47:33 -0700
Message-ID: <20080918014733.3c9c362e.akpm@linux-foundation.org>
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Cc: Greg Banks <gnb-cP1dWloDopni96+mSzHFpQC/G2K4zDHf@public.gmane.org>,
	linux-nfs list <linux-nfs@vger.kernel.org>,
	linux-kernel@vger.kernel.org,
	Peter zijlstra <a.p.zijlstra@chello.nl>
To: Martin Knoblauch <knobi-Ys4E+72pFW0hFhg+JK9F0w@public.gmane.org>
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On Thu, 18 Sep 2008 01:38:57 -0700 (PDT) Martin Knoblauch <knobi-Ys4E+72pFW0hFhg+JK9F0w@public.gmane.org> 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.