linux-kernel - Re: [PATCH v2 2/2] hugetlb: Replace BUG() with BUILD

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Date:	Wed, 23 Nov 2011 11:11:40 +0000
From:	David Howells <dhowells@...hat.com>
To:	David Daney <ddaney.cavm@...il.com>
Cc:	dhowells@...hat.com, ralf@...ux-mips.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	David Rientjes <rientjes@...gle.com>, DM <dm.n9107@...il.com>,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	David Daney <david.daney@...ium.com>
Subject: Re: [PATCH v2 2/2] hugetlb: Replace BUG() with BUILD_BUG() for dummy definitions.

David Daney <ddaney.cavm@...il.com> wrote:

> From: David Daney <david.daney@...ium.com>
> 
> The file linux/hugetlb.h has many places where dummy symbols were
> defined so that the main source code would contain fewer:
> 
>     #ifdef CONFIG_HUGETLBFS
> 
> or
> 
>     #ifdef CONFIG_TRANSPARENT_HUGEPAGE
> 
> If there were any misuse of these symbols, the only symptom would be
> an OOPS at runtime.  Change the BUG() to BUILD_BUG() to catch
> any such abuse at compile time instead.
> 
> Signed-off-by: David Daney <david.daney@...ium.com>

Acked-by: David Howells <dhowells@...hat.com>
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