linux-kernel - Re: [PATCH] fix pgd

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Message-ID: <20110216201524.GA7839@elte.hu>
Date:	Wed, 16 Feb 2011 21:15:24 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Andrea Arcangeli <aarcange@...hat.com>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	the arch/x86 maintainers <x86@...nel.org>,
	"Xen-devel@...ts.xensource.com" <Xen-devel@...ts.xensource.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Ian Campbell <Ian.Campbell@...rix.com>,
	Jan Beulich <JBeulich@...ell.com>,
	Larry Woodman <lwoodman@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andi Kleen <ak@...e.de>, Johannes Weiner <jweiner@...hat.com>,
	Hugh Dickins <hughd@...gle.com>, Rik van Riel <riel@...hat.com>
Subject: Re: [PATCH] fix pgd_lock deadlock


* Andrea Arcangeli <aarcange@...hat.com> wrote:

> Ok sorry, but whenever I'm asked if I tested my patch with lockdep, I think if it 
> was tested for other bugs, not to remove debug code overlapping with some lockdep 
> feature.

ah, ok. The thing is, if it was only a single VM_BUG_ON() then it wouldnt be a big 
deal. Seven seems excessive - especially since we have that very check via lockdep.

Thanks for removing them!

	Ingo
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