netdev - Re: What protects rcu_dereference() in __in6_dev

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Message-ID: <1263569496.4244.436.camel@laptop>
Date:	Fri, 15 Jan 2010 16:31:36 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	paulmck@...ux.vnet.ibm.com, yoshfuji@...ux-ipv6.org,
	netdev@...r.kernel.org, mingo@...e.hu, akpm@...ux-foundation.org
Subject: Re: What protects rcu_dereference() in __in6_dev_get()?

On Fri, 2010-01-15 at 16:29 +0100, Eric Dumazet wrote:

> I guess so, but is lockdep_is_held(&mutex) actually cheking this mutex is owned by us ?

Yep, assuming lockdep is still functional, otherwise its return value
will be undefined.

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