linux-kernel - Re: [PATCH] posix-timers: RCU conversion

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Date:	Mon, 04 Apr 2011 21:47:16 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	john stultz <johnstul@...ibm.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Avi Kivity <avi@...hat.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Richard Cochran <richard.cochran@...cron.at>, ben@...u.net,
	Oleg Nesterov <oleg@...hat.com>
Subject: Re: [PATCH] posix-timers: RCU conversion

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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