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

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Message-ID: <20070412171831.GD3028@fieldses.org>
Date:	Thu, 12 Apr 2007 13:18:31 -0400
From:	"J. Bruce Fields" <bfields@...ldses.org>
To:	Theodore Tso <tytso@....edu>, Neil Brown <neilb@...e.de>,
	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>
Subject: Re: If not readdir() then what?

On Thu, Apr 12, 2007 at 08:21:16AM -0400, Theodore Tso wrote:
> Again, compared to a directory fd cache, what you're proposing a huge
> hit to the filesystem, and at the moment, given that telldir/seekdir
> is rarely used by everyone else, it's mainly NFS which is the main bad
> actor here by insisting on the use of a small 31/63-bit cookie as a
> condition of protocol correctness.

If we want to get bigger cookies into the protocol, then the sooner we
start working on that the better....  How big is big enough?  And is a
larger cookie sufficient on its own?

--b.
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