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From: Andi Kleen <ak@muc.de>
To: "David S. Miller" <davem@redhat.com>
Cc: axboe@suse.de, linux-kernel@vger.kernel.org
Subject: Re: block layer sg, bsg
Date: Wed, 04 Aug 2004 19:28:04 +0200	[thread overview]
Message-ID: <m33c32ke3f.fsf@averell.firstfloor.org> (raw)
In-Reply-To: <2pwbQ-68b-43@gated-at.bofh.it> (David S. Miller's message of "Wed, 04 Aug 2004 17:50:14 +0200")

"David S. Miller" <davem@redhat.com> writes:
>
> Or use a more portable well-defined type which does not change
> size nor layout between 32-bit and 64-bit environments.

That is usually a mistake. People get the more subtle issues
like long long handling wrong, and then it is impossible to fix it 
anymore in a compat layer (examples are ipsec and iptables, which
cannot be emulated on x86-64 because of that) 

So please never pass any structures with read/write/netlink.

Thank you.

-Andi


       reply	other threads:[~2004-08-04 17:28 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <2ppN4-1wi-11@gated-at.bofh.it>
     [not found] ` <2pvps-5xO-33@gated-at.bofh.it>
     [not found]   ` <2pvz2-5Lf-19@gated-at.bofh.it>
     [not found]     ` <2pwbQ-68b-43@gated-at.bofh.it>
2004-08-04 17:28       ` Andi Kleen [this message]
2004-08-04 17:31         ` block layer sg, bsg Jens Axboe
2004-08-04 19:18         ` Jeff Garzik
2004-08-04 19:22           ` David S. Miller
2004-08-04 23:21             ` Andi Kleen
2004-08-04 23:26               ` David S. Miller
2004-08-04 23:51               ` YOSHIFUJI Hideaki / 吉藤英明
2004-08-05  3:58                 ` David S. Miller
2004-08-06  7:03                   ` Daniel Phillips
2004-08-06 15:04                     ` Andi Kleen
2004-08-08 19:18                       ` Daniel Phillips
2004-08-05 11:49                 ` Andi Kleen
2004-08-06  3:46                   ` YOSHIFUJI Hideaki / 吉藤英明
2004-08-06  4:19                     ` David S. Miller
2004-08-06 13:20                       ` Andi Kleen
2004-08-06 18:28                         ` David S. Miller
2004-08-06 11:04                     ` Andi Kleen
2004-08-04  8:50 Jens Axboe
2004-08-04 14:52 ` David S. Miller
2004-08-04 15:04   ` Jens Axboe
2004-08-04 15:44     ` David S. Miller
2004-08-04 15:48       ` Jens Axboe
2004-08-04 15:56       ` Jeff Garzik
2004-08-04 15:58         ` Jens Axboe
2004-08-04 23:11           ` Douglas Gilbert

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