linux-kernel - Re: [PATCH 3/7] fs/ocfs2: Use BUG

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Message-ID: <20080218201453.GA22671@ca-server1.us.oracle.com>
Date:	Mon, 18 Feb 2008 12:14:53 -0800
From:	Mark Fasheh <mark.fasheh@...cle.com>
To:	Julia Lawall <julia@...u.dk>
Cc:	kurt.hackel@...cle.com, ocfs2-devel@....oracle.com,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH 3/7] fs/ocfs2: Use BUG_ON

On Sun, Feb 17, 2008 at 06:55:49PM +0100, Julia Lawall wrote:
> From: Julia Lawall <julia@...u.dk>
> 
> if (...) BUG(); should be replaced with BUG_ON(...) when the test has no
> side-effects to allow a definition of BUG_ON that drops the code completely.
> 
> The semantic patch that makes this change is as follows:
> (http://www.emn.fr/x-info/coccinelle/)
> 
> // <smpl>
> @ disable unlikely @ expression E,f; @@
> 
> (
>   if (<... f(...) ...>) { BUG(); }
> |
> - if (unlikely(E)) { BUG(); }
> + BUG_ON(E);
> )
> 
> @@ expression E,f; @@
> 
> (
>   if (<... f(...) ...>) { BUG(); }
> |
> - if (E) { BUG(); }
> + BUG_ON(E);
> )
> // </smpl>
> 
> Signed-off-by: Julia Lawall <julia@...u.dk>
Acked-by: Mark Fasheh <mark.fasheh@...cle.com>

--
Mark Fasheh
Principal Software Developer, Oracle
mark.fasheh@...cle.com
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