netdev - Re: [PATCH] make atomic_t volatile on all architectures

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Message-ID: <alpine.LFD.0.999.0708121057500.30176@woody.linux-foundation.org>
Date:	Sun, 12 Aug 2007 10:59:08 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Segher Boessenkool <segher@...nel.crashing.org>
cc:	wjiang@...ilience.com, wensong@...ux-vs.org,
	heiko.carstens@...ibm.com, linux-kernel@...r.kernel.org,
	ak@...e.de, cfriesen@...tel.com, netdev@...r.kernel.org,
	horms@...ge.net.au, akpm@...ux-foundation.org,
	schwidefsky@...ibm.com, Chuck Ebbert <cebbert@...hat.com>,
	davem@...emloft.net, zlynx@....org, Chris Snook <csnook@...hat.com>
Subject: Re: [PATCH] make atomic_t volatile on all architectures



On Sun, 12 Aug 2007, Segher Boessenkool wrote:
> 
> It works _most of the time_.

It used to have problems. Gcc has had problems in various areas.

>			  Ask Martin.  Oh you don't even have to,
> he told you two mails ago.  My last mail simply pointed out that this
> isn't a GCC bug, but merely documented behaviour.

It was *not* documented behaviour, and there were gcc people who actively 
*encouraged* use of "+m", and actually fixed gcc.

The documentation is buggy.

Live with it.

			Linus
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