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Date: Fri, 28 Mar 2008 10:43:11 +0100
From: Jiri Slaby <jirislaby@gmail.com>
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To: Balbir Singh <balbir@linux.vnet.ibm.com>
CC: Paul Menage <menage@google.com>, Pavel Emelianov <xemul@openvz.org>,
       Hugh Dickins <hugh@veritas.com>,
       Sudhir Kumar <skumar@linux.vnet.ibm.com>,
       YAMAMOTO Takashi <yamamoto@valinux.co.jp>, lizf@cn.fujitsu.com,
       linux-kernel@vger.kernel.org, taka@valinux.co.jp, linux-mm@kvack.org,
       David Rientjes <rientjes@google.com>,
       Andrew Morton <akpm@linux-foundation.org>,
       KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: Re: [-mm] Add an owner to the mm_struct (v2)
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On 03/28/2008 10:41 AM, Jiri Slaby wrote:
>> linux-2.6.25-rc5/include/linux/mm_types.h~memory-controller-add-mm-owner    
>> 2008-03-28 09:30:47.000000000 +0530
>> +++ linux-2.6.25-rc5-balbir/include/linux/mm_types.h    2008-03-28 
>> 12:26:59.000000000 +0530
>> @@ -227,8 +227,10 @@ struct mm_struct {
>>      /* aio bits */
>>      rwlock_t        ioctx_list_lock;
>>      struct kioctx        *ioctx_list;
>> -#ifdef CONFIG_CGROUP_MEM_RES_CTLR
>> -    struct mem_cgroup *mem_cgroup;
>> +#ifdef CONFIG_MM_OWNER
>> +    spinlock_t owner_lock;
>> +    struct task_struct *owner;    /* The thread group leader that */
> 
> Doesn't make sense to switch them (spinlock is unsigned int on x86, 
> what's sizeof between and after?)?

Hmm, doesn't matter, there is another pointer after it, ignore me.