linux-kernel - Re: 2.6.23-rc6-mm1: IPC: sleeping function called ...

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Date:	Tue, 18 Sep 2007 09:57:15 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	paulmck@...ux.vnet.ibm.com
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Nadia Derbey <Nadia.Derbey@...l.net>,
	Alexey Dobriyan <adobriyan@...ru>,
	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>
Subject: Re: 2.6.23-rc6-mm1: IPC: sleeping function called ...

On Tue, 18 Sep 2007 09:13:37 -0700 "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com> wrote:

> On Tue, Sep 18, 2007 at 02:24:51PM +0200, Peter Zijlstra wrote:
> > On Tue, 18 Sep 2007 03:34:00 -0700 Andrew Morton
> > <akpm@...ux-foundation.org> wrote:
> > 
> > > Well, it was an optimisation.  spin_lock() implies rcu_read_lock().  That's
> > > a bit dirty and we might choose to not do that.
> > 
> > Not true for the preemptible-rcu work. All such sites should be fixed,
> > or at the very least heavily annotated.
> 
> What he said!!!
> 

What he said!

How are you going to find all such sites?
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