linux-kernel - Re: Where does NFS client associate the file handle received from server with inode?

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Message-ID: <4ae3c140608230657i3300aa08m129e75e090b59ff@mail.gmail.com>
Date:	Wed, 23 Aug 2006 09:57:40 -0400
From:	"Xin Zhao" <uszhaoxin@...il.com>
To:	"Trond Myklebust" <trond.myklebust@....uio.no>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-fsdevel@...r.kernel.org
Subject: Re: Where does NFS client associate the file handle received from server with inode?

Because I have to carry some additional information of the file
identified by the file handle. :) But never mind, the problem has been
fixed.

Thanks anyway,
xin

On 8/21/06, Trond Myklebust <trond.myklebust@....uio.no> wrote:
> On Sat, 2006-08-19 at 21:36 -0400, Xin Zhao wrote:
> > I ran into a problem:
> >
> > I extend several fields to file handle, and change compose_fh() to
> > initialize some value into the file handle. I think the client side
> > should be able to associate the file handle with inode and used them
> > properly afterwards.  However, I found a problem:
> >
> > Say I have a program 'postmark" in /tmp, and my current directory is /
> >
> > If I do '/tmp/postmark', getattr() funciton will not use the right
> > file handle with extension. Instead, it seems to use a file handle
> > excluding my extension
> >
> > but if I change to '/tmp', do 'ls -al' first, then I do 'postmark',
> > getattr() will use the right file handle.
> >
> > So I think maybe I need to change NFS client to associate the extened
> > file handle with inode . But I don't know where NFS client does this.
> > Can someone give me a help?
>
> Why are you changing the file handle? We should already be caching the
> correct one (i.e. the one that was sent to us by the server in the
> LOOKUP call) in the 'struct nfs_inode'.
>
> Cheers,
>   Trond
>
>
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