linux-kernel - Re: If not readdir() then what?

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Message-ID: <9520.1176222345@turing-police.cc.vt.edu>
Date:	Tue, 10 Apr 2007 12:25:45 -0400
From:	Valdis.Kletnieks@...edu
To:	Jan Engelhardt <jengelh@...ux01.gwdg.de>
Cc:	Trond Myklebust <trond.myklebust@....uio.no>,
	Theodore Tso <tytso@....edu>,
	Jörn Engel <joern@...ybastard.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Christoph Hellwig <hch@...radead.org>,
	Ulrich Drepper <drepper@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Neil Brown <neilb@...e.de>
Subject: Re: If not readdir() then what?

On Tue, 10 Apr 2007 17:54:54 +0200, Jan Engelhardt said:

> NFS server sends the whole directory contents on NFS client opendir,
> so that the whole readdir/telldir/seekdir magic can happen on the
> client only... which would perhaps also enable a cheap telldir/seekdir,
> and would also give a 'fixed view' when adding/deleting files
> during readdir.

What should happen if the directory contents go stale?  If *two* systems
cache the directory and then proceed to add/delete files, what happens?

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