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Message-ID: <16885.35235.411994.645619@wombat.chubb.wattle.id.au>
Date: Tue, 25 Jan 2005 10:49:55 +1100
From: Peter Chubb <peterc@gelato.unsw.edu.au>
To: Maciej Soltysiak <solt2@dns.toxicfilms.tv>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Support for Large Block Devices
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>>>>> "Maciej" == Maciej Soltysiak <solt2@dns.toxicfilms.tv> writes:

Maciej> Hi, I was wondering... Why is "Support for Large Block
Maciej> Devices" still an option?

Maciej> Shouldn't it be compiled in always?  Or maybe there are some
Maciej> cons like incompatibility or something?

It's not compiled in always on 32-bit platforms, because
     1.  Most people don't have more than 2TB in a single block device
     2.  64-bit sizes mean increased size of various structures (i.e.,
         less cache-friendly), and slightly slower operations.

On 64-bit platforms it *is* always enabled.
-- 
Dr Peter Chubb  http://www.gelato.unsw.edu.au  peterc AT gelato.unsw.edu.au
The technical we do immediately,  the political takes *forever*
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