linux-kernel - Re: recent nfs change causes autofs regression

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Date:	Wed, 05 Sep 2007 17:26:32 +0100
From:	Trond Myklebust <trond.myklebust@....uio.no>
To:	Ian Kent <raven@...maw.net>
Cc:	David Howells <dhowells@...hat.com>,
	Bill Davidsen <davidsen@....com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Frank van Maarseveen <frankvm@...nkvm.com>,
	Hua Zhong <hzhong@...il.com>,
	'Linux Kernel Mailing List' <linux-kernel@...r.kernel.org>,
	akpm@...ux-foundation.org
Subject: Re: recent nfs change causes autofs regression

On Wed, 2007-09-05 at 20:44 +0800, Ian Kent wrote:
> On Tue, 2007-09-04 at 08:54 +0100, David Howells wrote:
> > Bill Davidsen <davidsen@....com> wrote:
> > 
> > > mount /base on point1 - rw	[ hopefully really r/w ]
> > > mount /base on point2 - ro	[ hopefully r/o ]
> > 
> > I think Al Viro probably has the right idea as to how to fix this: Move the
> > R/O R/W flag into vfsmount and count the number of R/W vfsmounts in the
> > superblock.  I never quite finished implementing the patch to do this, but I
> > can go back and revisit it.
> 
> But what about mounting with different protocol, tcp vs udp for example.
> 
> Ian

With the patch that Linus merged, we will fork off a new superblock.

Trond

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