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

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Date:	Tue, 23 Jun 2009 10:42:35 -0400
From:	Gregory Haskins <gregory.haskins@...il.com>
To:	Davide Libenzi <davidel@...ilserver.org>
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

Davide Libenzi wrote:
> 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.
>   

Ok.   As long as you do not think we are somehow painting ourselves into
a corner, lets just go with your original plan for the revised patch
sans key changes.

Thanks Davide,
-Greg



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