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Date:      Sat, 29 May 1999 14:17:39 -0400 (EDT)
From:      Zhihui Zhang <zzhang@cs.binghamton.edu>
To:        Duncan Barclay <dmlb@ragnet.demon.co.uk>
Cc:        freebsd-hackers@FreeBSD.ORG, "Christopher R.Bowman" <crb@ChrisBowman.com>
Subject:   Re: Algorithm used to delete part of a file
Message-ID:  <Pine.GSO.3.96.990529141455.13164A-100000@sol.cs.binghamton.edu>
In-Reply-To: <XFMail.990529131936.dmlb@computer.my.domain>

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On Sat, 29 May 1999, Duncan Barclay wrote:

> Primarily the file system is a "block" orientated storage media where a "block"
> is the fragment size or a file system block. Addressing in the filesystem is
> done on a block by block basis. As each block is a number of bytes we cannot
> use byte addressing to simply move pointers around.
> 
> If you find the papers written by Rob Pike on the editor "Sam" undr Plan-9 he
> goes into a lot of detail about algorithms for removing/adding bytes into a
> storage area with block addressing.
> 
Thanks.  I have found a paper named "the text editor sam" by Rob Pike in
1987 at http://plan9.bell-labs.com/cm/cs/papers.html.

-Zhihui



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