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To: linux-kernel@vger.kernel.org
From: "H. Peter Anvin" <hpa@zytor.com>
Subject: Re: 64-bit kdev_t - just for playing
Date: 1 Apr 2003 13:59:23 -0800
Organization: Transmeta Corporation, Santa Clara CA
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References: <UTC200303272027.h2RKRbf27546.aeb@smtp.cwi.nl> <Pine.LNX.4.44.0303311039190.5042-100000@serv> <20030331172403.GM32000@ca-server1.us.oracle.com>  <1049208134.19703.12.camel@dhcp22.swansea.linux.org.uk>
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Followup to:  <1049208134.19703.12.camel@dhcp22.swansea.linux.org.uk>
By author:    Alan Cox <alan@lxorguk.ukuu.org.uk>
In newsgroup: linux.dev.kernel
> 
> We need to default to 12:20 for char but where the 20 is actually
> defaulting to 0000xx so we don't get extra minors for any device
> that hasnt been audited for it
> 

Or 32:32... if we have a hope for that.  Given that the bulk of the
overhead is *already* taken in userspace I still think we should go
all the way on this one.  But yes, we need to make sure old-api
devices get -ENXIO on open anything beyond the 8-bit minor space.

	-hpa
-- 
<hpa@transmeta.com> at work, <hpa@zytor.com> in private!
"Unix gives you enough rope to shoot yourself in the foot."
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