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Date: Thu, 25 Aug 2005 15:26:56 -0600
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From: "Christopher Friesen" <cfriesen@nortel.com>
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To: Vadim Lobanov <vlobanov@speakeasy.net>
CC: linux-kernel@vger.kernel.org, tom.anderl@gmail.com
Subject: Re: [OT] volatile keyword
References: <Pine.LNX.4.58.0508251335280.4315@shell2.speakeasy.net> <430E30B2.1020700@nortel.com> <Pine.LNX.4.58.0508251414350.19866@shell2.speakeasy.net>
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Vadim Lobanov wrote:

> I figured it was something along these lines. In that case, is the
> following code (from kernel/posix-timers.c) really doing the right
> thing?
> 
> do
>     expires = timr->it_timer.expires;
> while ((volatile long) (timr->it_timer.expires) != expires);
> 
> Seems it's casting the value, not the pointer.

Someone else will have to give the definitive answer, but it looks 
suspicious to me...

Chris