linux-kernel - Re: [PATCH 3/3] eventfd: add internal reference counting to fix notifier race conditions

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Message-ID: <alpine.DEB.1.10.0906230732250.16382@makko.or.mcafeemobile.com>
Date:	Tue, 23 Jun 2009 07:35:00 -0700 (PDT)
From:	Davide Libenzi <davidel@...ilserver.org>
To:	Gregory Haskins <gregory.haskins@...il.com>
cc:	Gregory Haskins <ghaskins@...ell.com>,
	"Michael S. Tsirkin" <mst@...hat.com>, kvm@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	avi@...hat.com, paulmck@...ux.vnet.ibm.com,
	Ingo Molnar <mingo@...e.hu>,
	Rusty Russell <rusty@...tcorp.com.au>
Subject: Re: [PATCH 3/3] eventfd: add internal reference counting to fix
 notifier race conditions

On Tue, 23 Jun 2009, Gregory Haskins wrote:

> Davide Libenzi wrote:
> > On Mon, 22 Jun 2009, Gregory Haskins wrote:
> >
> >   
> >> To be honest, I am not sure.  I would guess its not a *huge* deal,
> >> though it was obviously enough of a concern to at least discuss it.  I
> >> can definitely say that I think the other issues which are being fixed
> >> are substantially more important.
> >>     
> >
> > Ok then, will repost the revised patch later today.
> >   
> 
> Ok sounds good.  I did have a chance to take a closer look at your
> proposal for the key data, and I think it makes a lot of sense.  Do you
> see it as a problem if we defer adding that?  Or should we try to add
> that notion now?

That would need to go eventually via mainline, after some discussion. But 
yes, I believe that using the "key" as simple bitmask is a little 
restrictive.


- Davide


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