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Date:	Thu, 23 Apr 2009 16:24:37 -0500
From:	Steve Wise <swise@...ngridcomputing.com>
To:	Jens Axboe <jens.axboe@...cle.com>
CC:	balbir@...ux.vnet.ibm.com,
	Andrew Morton <akpm@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Wolfram Strepp <wstrepp@....de>
Subject: Re: [BUG] rbtree bug with mmotm 2009-04-14-17-24

Jens Axboe wrote:
> On Wed, Apr 22 2009, Steve Wise wrote:
>   
>> Jens Axboe wrote:
>>
>>  
>>
>>     
>>>> Still crashes with this variant:
>>>>     
>>>>         
>>> OK, so please try and revert a36e71f996e25d6213f57951f7ae1874086ec57e
>>> and see if that works?
>>>
>>> Or, better yet, please try and revert
>>> 55a63998b8967615a15e2211ba0ff3a84a565824 first. If that doesn't work,
>>> try the above revert.
>>>
>>>   
>>>       
>> Reverting 55a63998b8967615a15e2211ba0ff3a84a565824 did the trick.
>>     
>
> Steve, can you (and Balbir) try with pulling this into 2.6.30-rc3:
>
>         git://git.kernel.dk/linux-2.6-block.git for-linus
>
> It has two fixes for possible rbtree misuse in cfq. If it still crashes
> without reverting 55a63998b8967615a15e2211ba0ff3a84a565824 with that,
> then we also need to look further into the rbtree issue.
>   

rc3 + your commits in the above branch seem to resolve the issue as well. 


Steve.


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