Date: Thu, 08 May 2003 13:43:00 -0700 (PDT)
Message-Id: <20030508.134300.122085520.davem@redhat.com>
To: pavel@ucw.cz
Cc: hch@infradead.org, arnd@arndb.de, linux-kernel@vger.kernel.org
Subject: Re: ioctl cleanups: enable sg_io and serial stuff to be shared
From: "David S. Miller" <davem@redhat.com>
In-Reply-To: <20030508203313.GA2787@elf.ucw.cz>
References: <20030507152856.GF412@elf.ucw.cz>
	<1052323484.9817.14.camel@rth.ninka.net>
	<20030508203313.GA2787@elf.ucw.cz>
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   From: Pavel Machek <pavel@ucw.cz>
   Date: Thu, 8 May 2003 22:33:14 +0200

   What about this one: redefine it to (*ioctl)( ...., unsigned *long*,
   unsinged long). That means we can add 
   
   #define IOCTL_COMPAT 0x1 0000 0000

Bzzt!  Doesn't work on 32-bit.  COMPAT does not mean 64-bit-->32-bit
translations, stop thinking about the compat layer in this way.

It is a generic environment translation system.

Eventually we can use it for things like IBCS2 and stuff like that.

Suggest something sane like defining a macro such as
"compat_task(tsk)" that can be tested by various bits of
code.
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