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Date: Fri, 3 Aug 2001 19:41:40 -0400 (EDT)
From: Alexander Viro <viro@math.psu.edu>
To: Chris Wedgwood <cw@f00f.org>
cc: Linus Torvalds <torvalds@transmeta.com>, linux-kernel@vger.kernel.org,
        Alan Cox <alan@lxorguk.ukuu.org.uk>, Chris Mason <mason@suse.com>
Subject: Re: [PATCH] 2.4.8-pre3 fsync entire path (+reiserfs fsync semantic
 change patch)
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On Sat, 4 Aug 2001, Chris Wedgwood wrote:

> On Fri, Aug 03, 2001 at 07:25:19PM -0400, Alexander Viro wrote:
> 
>     You need credentials to sync a regular file on any network
>     filesystem.
> 
> For 2.5.x I assume your planning or a credentials cache?  Something
> like dentry->d_creds or something?  If that's the case we still don't
> need the struct file* to be passed --- but I suspect that's not the
> case and I really don't understand.

file->f_cred. Different people opening the same file can have different
credentials (e.g. credentials can be revoked)