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Date: Sat, 15 Mar 2003 20:31:03 -0500
From: Pete Zaitcev <zaitcev@redhat.com>
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To: "Randy.Dunlap" <rddunlap@osdl.org>
cc: linux-kernel@vger.kernel.org
Subject: Re: bitmaps/bitops
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> but the prototype for test_and_set_bit() depends on $(ARCH), and it's
> not consistent, with the second arg (bitmap address) being one of:
>   volatile void *
>   void *
>   volatile unsigned long *

It should be unsigned long pointer. I have no idea why
volatile is still alive. Perhaps Linus can remember why he
left it in on is386. Other arch maintainers midnlessly ape him
in this area. I think I even kept his e-mail where he explains
why volatile has to go.

-- Pete