linux-kernel - Re: [RFC][PATCH 7/7] lockdep: spin_lock_nest

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Message-ID: <aday73cua99.fsf@cisco.com>
Date:	Mon, 04 Aug 2008 07:26:26 -0700
From:	Roland Dreier <rdreier@...co.com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	David Miller <davem@...emloft.net>, jeremy@...p.org,
	hugh@...itas.com, mingo@...e.hu, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org, davej@...hat.com
Subject: Re: [RFC][PATCH 7/7] lockdep: spin_lock_nest_lock()

 > No more than 48 locks (mutexes, rwlocks, spinlock, RCU, everything
 > covered by lockdep) held by any one code-path; including nested
 > interrupt contexts.

Does that mean that something like the new mm_take_all_locks() operation
is going to explode if someone tries to use it with lockdep on?

 - R.
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