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Message-ID: <4ADE3EE9.3090308@us.ibm.com>
Date: Tue, 20 Oct 2009 15:51:21 -0700
From: Darren Hart <dvhltc@...ibm.com>
To: John Kacur <jkacur@...hat.com>
CC: linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
linux-rt-users@...r.kernel.org
Subject: Re: [PATCH] futex: Detect mismatched requeue targets
John Kacur wrote:
> ----- "Darren Hart" <dvhltc@...ibm.com> wrote:
>
>> John Kacur wrote:
>>> Hello Darren
>>>
>>> I took your patch from commit
>> 84bc4af59081ee974dd80210e694ab59ebe51ce8
>>> and I tried to git-cherry-pick it for v2.6.31.4-rt14
>>>
>>> I had a little merge-commit to resolve. That wasn't too hard, but as
>> the
>>> code is a bit different between the two versions, I would appreciate
>> it if
>>> you could review the patch, and make sure that it still makes sense
>> for
>>> v2.6.31.r-rt14
>> Hi John,
>>
>> It looks good to me. Where did you have the conflicts?
>>
>> --
>
> The conflict was in the futex_wait_requeue_pi function.
> That's where you really need to double check that the logic still makes sense.
Hi John,
Yes, I suspect the conflict was do to the retry: label. You should have
already pulled in the spurious wakeup patch, so you should be fine. The
patch looks good to me.
Thanks,
--
Darren Hart
IBM Linux Technology Center
Real-Time Linux Team
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