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Subject: Re: [PATCH] posix-timers: RCU conversion
From: Eric Dumazet <eric.dumazet@gmail.com>
To: john stultz <johnstul@us.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
        Thomas Gleixner <tglx@linutronix.de>, Avi Kivity <avi@redhat.com>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        Richard Cochran <richard.cochran@omicron.at>, ben@iagu.net,
        Oleg Nesterov <oleg@redhat.com>
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Content-Type: text/plain; charset="UTF-8"
Date: Mon, 04 Apr 2011 21:47:16 +0200
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Le lundi 04 avril 2011 à 11:08 -0700, john stultz a écrit :
> On Sun, 2011-04-03 at 18:54 +0200, Eric Dumazet wrote:
> > Andrew, I submitted this patch some time ago and got no feedback from
> > Thomas, John, Richard or Paul.
> 
> Sorry about that. Its been on my list.
> 
> It looks ok to me, but I not very familiar with idr locking rules
> (though looking at the code the comments state that idr_find can be
> safely called the way you do here).

Not only comments, but ipc uses rcu locking as well ;)

Nadia Derbey did the work on idr and ipc in commits :

983bfb7db303cfde56ae5bbf4e0f2f46e38c9576
(ipc: call idr_find() without locking in ipc_lock())

f9c46d6ea5ce138a886c3a0f10a46130afab75f5
(idr: make idr_find rcu-safe)


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