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From: Andries.Brouwer@cwi.nl
Date: Fri, 11 Apr 2003 23:13:52 +0200 (MEST)
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To: Andries.Brouwer@cwi.nl, James.Bottomley@steeleye.com
Subject: Re: [patch for playing] Patch to support 4000 disks and maintain backward compatibility
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       pbadari@us.ibm.com
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> It would also be nice for numeric compatibility to be a compile time option

It sounds as if you expect a lot of old cruft.
But the compatibility code is just ten lines or so.
Internally the kernel has an index. Externally there is a dev_t.
At open() time the dev_t is converted. At registration time
sd announces interest in three or four dev_t regions.
That is all.

Andries