linux-kernel - Re: [PATCH] lockdep: lock_set_subclass

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Message-ID: <489350AE.1030609@goop.org>
Date:	Fri, 01 Aug 2008 11:06:38 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
CC:	David Miller <davem@...emloft.net>, mingo@...e.hu,
	torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org
Subject: Re: [PATCH] lockdep: lock_set_subclass - reset a held lock's subclass

Peter Zijlstra wrote:
> From: Peter Zijlstra <a.p.zijlstra@...llo.nl>
> Subject: lockdep: lock_set_subclass - reset a held lock's subclass
>
> this can be used to reset a held lock's subclass, for arbitrary-depth
> iterated data structures such as trees or lists which have per-node
> locks.
>   

Hey, can I use this to suppress the spurious lockdep warnings I get when 
I try to hold more than one pte lock at once?

    J
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