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Date:	Thu, 23 Feb 2012 10:32:02 +0800
From:	Ian Kent <raven@...maw.net>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	David Miller <davem@...emloft.net>, linux-kernel@...r.kernel.org,
	"H. Peter Anvin" <hpa@...or.com>, autofs@...r.kernel.org,
	Thomas Meyer <thomas@...3r.de>,
	Al Viro <viro@...iv.linux.org.uk>
Subject: Re: compat: autofs v5 packet size ambiguity - update

On Wed, 2012-02-22 at 18:25 -0800, Linus Torvalds wrote:
> On Wed, Feb 22, 2012 at 6:09 PM, Ian Kent <raven@...maw.net> wrote:
> >
> > Sure, that's true, and you'll see it uses the mount option maxproto with
> > the value of AUTOFS_MAX_PROTO_VERSION. But autofs uses it's own copy of
> > the headers so AUTOFS_MAX_PROTO_VERSION is 4 not 5 so it won't be
> > affected by this change.
> 
> Ok.
> 
> I fetched your git tree, and it seems this changed to use mount()
> directly in commit a74f68c99d9f ("integrated master map parsing into
> daemon") back in 2006.
> 
> Which seems to be part of autofs_5_0_0_beta1, so I guess we're safe. I
> hope no distro ever used any early pre-beta versions of autofs that
> had the new packet support but still used the external 'mount'
> command.

If there are they have bigger automount problem than the kernel packet
size, ;)

It really didn't become usable until at least the rc releases and the
actual first non-test release was 5.0.1, we never had a 5.0.0.

Ian


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