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Date: Fri, 3 Aug 2001 12:25:39 -0400
From: Mike Frisch <mfrisch@saturn.tlug.org>
To: linux-kernel@vger.kernel.org
Subject: Re: fake loop
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In-Reply-To: <20010803155735.18620.qmail@nwcst31f.netaddress.usa.net>; from ailinykh@usa.net on Fri, Aug 03, 2001 at 09:57:34AM -0600
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On Fri, Aug 03, 2001 at 09:57:34AM -0600, Andrey Ilinykh wrote:
> Very often I see in kernel such code as
> do {
>   dosomthing();
> } while(0);
> 
> or even
> 
> #define prepare_to_switch()     do { } while(0)
> 
> Who can explain me a reason for these fake loops?

This is answered in the Kernelnewbies FAQ @
http://kernelnewbies.org/faq/index.php3#dowhile.xml.