[dm-devel] Re: a room for blkio-cgroup in struct page_cgroup

[Balbir Singh <balbir linux vnet ibm com>]

2009/9/2 KAMEZAWA Hiroyuki <kamezawa hiroyu jp fujitsu com>:
> Ryo Tsuruta wrote:
>> Hi Kamezawa-san,
>>
>> As you wrote before (http://lkml.org/lkml/2009/7/22/65)
>>> To be honest, what I expected in these days for people of blockio
>>> cgroup is like following for getting room for themselves.
>> <<snip>>
>>> --- mmotm-2.6.31-Jul16.orig/include/linux/page_cgroup.h
>>> +++ mmotm-2.6.31-Jul16/include/linux/page_cgroup.h
>>> @@ -13,7 +13,7 @@
>>>  struct page_cgroup {
>>>       unsigned long flags;
>>>       struct mem_cgroup *mem_cgroup;
>>> -     struct page *page;
>>> +     /* block io tracking will use extra unsigned long bytes */
>>>       struct list_head lru;       /* per cgroup LRU list */
>>> };
>>
>> Have you already added a room for blkio_cgroup in struct page_cgroup?
> No.
>

The diff above is unclear, are you removing struct page from page_cgroup?

Balbir Singh