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Date: Tue, 24 Feb 1998 11:13:23 +0800
From: Julian Elischer <julian@whistle.com>
Organization: Whistle Communications
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To: Terry Lambert <tlambert@primenet.com>
CC: Mike Smith <mike@smith.net.au>, hasty@rah.star-gate.com, scrappy@hub.org,
        freebsd-current@FreeBSD.ORG
Subject: Re: ATAPI related patch ..
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Terry Lambert wrote:
> 

> Talk to Julian; we hashed this all out over a whiteboard one night
> when I wanted to start using the 8-bit field, take the page mapping
> hit, and either go with the page that was there or read partial
> pages from disk for the MSDOSFS case where the 1k "blocks" began
> at a one block offset (possible on some older geometry drives).  I
> was being less ambitious, in that I only wanted to handle runs of
> blocks in 512b multiples at (possible) multiple minus 1 non-zero
> offsets.  Just the 1k disk/2k optical media/msdosfs non-even
> cylinder boundry cases...
> 
> Julian's soloution is more correct, but it's a lot of work to support
> arbitrary block sizes (*especially* if the block size happens to be
> prime(!)...).

duh 

I remember the conversation but I'm dammed if I can rememeber my
solution :-)

(did it have to do with getpage/putpage or something? (or am I
thinking'of the wrong conversation?))

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