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Message-ID: <20120509120544.GA17535@infradead.org>
Date:	Wed, 9 May 2012 08:05:44 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	Bernd Schubert <bernd.schubert@...m.fraunhofer.de>
Cc:	Christoph Hellwig <hch@...radead.org>,
	David Howells <dhowells@...hat.com>,
	Dave Chinner <david@...morbit.com>, adilger@...ger.ca,
	bfields@...ldses.org, smfrench@...il.com, ben@...adent.org.uk,
	Trond.Myklebust@...app.com, roland@...k.frob.com, jra@...ba.org,
	linux-fsdevel@...r.kernel.org, linux-nfs@...r.kernel.org,
	linux-cifs@...r.kernel.org, samba-technical@...ts.samba.org,
	linux-ext4@...r.kernel.org, linux-api@...r.kernel.org,
	libc-alpha@...rceware.org
Subject: Re: Extended file stat: Splitting file- and fs-specific info?

On Wed, May 09, 2012 at 01:55:16PM +0200, Bernd Schubert wrote:
> The basic idea of generation numbers is to check if an inode was
> recycled, so only if the tuple of inode-number and generation-number
> matches we still have the same file. Kernel nfs

NFS does not and should not look at the inode generation.  Except for a
bit of legacy code for the old pre-Linux 2.4 filehandles it looks at the
opaque file handle returned and only interpreted by the filesystem.  Any
userspace NFS server should do the same.
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