Date: Sat, 3 Jan 2009 20:30:44 +0000
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Pavel Machek <pavel@suse.cz>
Cc: kernel list <linux-kernel@vger.kernel.org>, Andrew Morton <akpm@osdl.org>,
       mtk.manpages@gmail.com, rdunlap@xenotime.net, linux-doc@vger.kernel.org
Subject: Re: atomics: document that linux expects certain atomic behaviour
 from unsigned long
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	<20090103201955.186974bb@lxorguk.ukuu.org.uk>
	<20090103202740.GC1666@elf.ucw.cz>
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> If it is okay and linux relies on it, it should be documented.
> 
> If it is not okay, I guess we should document it, too -- it seems to
> be common mistake. 

A lot of old code did it knowing it was under the BKL, outside of the BKL
its a very bad idea. There were lots of them in the tty layer and I don't
doubt there are some left I missed too 8(
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