Message-Id: <200401162238.i0GMcxT3004785@turing-police.cc.vt.edu>
To: Hans Reiser <reiser@namesys.com>
Cc: raymond jennings <highwind747@hotmail.com>, linux-kernel@vger.kernel.org
Subject: Re: [IDEA] - run-length compaction of block numbers 
In-Reply-To: Your message of "Fri, 16 Jan 2004 23:47:55 +0300."
             <40084DFB.5040106@namesys.com> 
From: Valdis.Kletnieks@vt.edu
References: <BAY1-F117hxeH6PC8MS00006f92@hotmail.com> <200401161954.i0GJsEgj003906@turing-police.cc.vt.edu>
            <40084DFB.5040106@namesys.com>
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On Fri, 16 Jan 2004 23:47:55 +0300, Hans Reiser said:

> This is already done, they are called "extent"s.  Reiser4 uses them, XFS 
> uses them, I think Veritas may have been the first to use them but I am 
> not sure of this, maybe it was IBM.

Does the extent-based disk allocation used by OS/360 in 1964 count? :)

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