From mboxrd@z Thu Jan  1 00:00:00 1970
From: "David S. Miller" <davem@redhat.com>
Subject: Re: block layer sg, bsg
Date: Wed, 4 Aug 2004 08:44:29 -0700
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To: Jens Axboe <axboe@suse.de>
Cc: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org

On Wed, 4 Aug 2004 17:04:04 +0200
Jens Axboe <axboe@suse.de> wrote:

> On Wed, Aug 04 2004, David S. Miller wrote:
> > 
> > When you pass data structures in via {read,write}{,v}() system calls,
> > you make it next to impossible for the CONFIG_COMPAT layer to cope
> > with this.
> > 
> > Please consider another way to pass in those sg_io_* things.
> 
> Any suggestions?

ioctl() :-(

Or use a more portable well-defined type which does not change
size nor layout between 32-bit and 64-bit environments.