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Message-ID: <20091106163007.GC6746@linux.vnet.ibm.com> Date: Fri, 6 Nov 2009 08:30:07 -0800 From: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com> To: Rusty Russell <rusty@...tcorp.com.au> Cc: "Michael S. Tsirkin" <mst@...hat.com>, Gregory Haskins <gregory.haskins@...il.com>, Eric Dumazet <eric.dumazet@...il.com>, netdev@...r.kernel.org, virtualization@...ts.linux-foundation.org, kvm@...r.kernel.org, linux-kernel@...r.kernel.org, mingo@...e.hu, linux-mm@...ck.org, akpm@...ux-foundation.org, hpa@...or.com, s.hetze@...ux-ag.com Subject: Re: [PATCHv7 3/3] vhost_net: a kernel-level virtio server On Fri, Nov 06, 2009 at 03:31:20PM +1030, Rusty Russell wrote: > On Thu, 5 Nov 2009 03:55:42 am Paul E. McKenney wrote: > > On Wed, Nov 04, 2009 at 01:57:29PM +0200, Michael S. Tsirkin wrote: > > > Can you ack this usage please? > > > > I thought I had done so in my paragraph above, but if you would like > > something a bit more formal... > > <snip verbose super-ack with qualifications> > > That's great guys. And yes, this is a kind of read-copy-update. And no, > there's nothing wrong with it. > > But it's still nasty to use half an API. If it were a few places I would > have open-coded it with a comment, or wrapped it. As it is, I don't think > that would be a win. So would it help to have a rcu_read_lock_workqueue() and rcu_read_unlock_workqueue() that checked nesting and whether they were actually running in the context of a workqueue item? Or did you have something else in mind? Or am I misjudging the level of sarcasm in your reply? ;-) Thanx, Paul -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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