linux-kernel - Re: [-mm PATCH 4/9] Memory controller memory accounting (v4)

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Message-ID: <46C2CF36.7020308@linux.vnet.ibm.com>
Date:	Wed, 15 Aug 2007 15:32:30 +0530
From:	Balbir Singh <balbir@...ux.vnet.ibm.com>
To:	YAMAMOTO Takashi <yamamoto@...inux.co.jp>
CC:	svaidy@...ux.vnet.ibm.com, a.p.zijlstra@...llo.nl,
	dhaval@...ux.vnet.ibm.com, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, ebiederm@...ssion.com,
	containers@...ts.osdl.org, akpm@...ux-foundation.org,
	xemul@...nvz.org, menage@...gle.com
Subject: Re: [-mm PATCH 4/9] Memory controller memory accounting (v4)

YAMAMOTO Takashi wrote:
>> YAMAMOTO Takashi wrote:
>>>> +	lock_meta_page(page);
>>>> +	/*
>>>> +	 * Check if somebody else beat us to allocating the meta_page
>>>> +	 */
>>>> +	race_mp = page_get_meta_page(page);
>>>> +	if (race_mp) {
>>>> +		kfree(mp);
>>>> +		mp = race_mp;
>>>> +		atomic_inc(&mp->ref_cnt);
>>>> +		res_counter_uncharge(&mem->res, 1);
>>>> +		goto done;
>>>> +	}
>>> i think you need css_put here.
>> Thats correct. We do need css_put in this path.
>>
>> Thanks,
>> Vaidy
> 
> v5 still seems to have the problem.
> 
> YAMAMOTO Takashi
> 

Hi, 

I've got the fix in v6 now, thanks for spotting it.

-- 
	Warm Regards,
	Balbir Singh
	Linux Technology Center
	IBM, ISTL
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