linux-kernel - Re: [RFC] [PATCH 7/8] cfq-iosched: Enable deep hierarchy in CGgroup

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Date:	Mon, 29 Nov 2010 10:35:03 +0800
From:	Gui Jianfeng <guijianfeng@...fujitsu.com>
To:	Vivek Goyal <vgoyal@...hat.com>
CC:	Jens Axboe <axboe@...nel.dk>, Corrado Zoccolo <czoccolo@...il.com>,
	Chad Talbott <ctalbott@...gle.com>,
	Nauman Rafique <nauman@...gle.com>,
	Divyesh Shah <dpshah@...gle.com>,
	linux kernel mailing list <linux-kernel@...r.kernel.org>
Subject: Re: [RFC] [PATCH 7/8] cfq-iosched: Enable deep hierarchy in CGgroup

Vivek Goyal wrote:
> On Sun, Nov 14, 2010 at 04:25:42PM +0800, Gui Jianfeng wrote:
>> Currenlty, only level 0 and 1 CGroup directory is allowed to be created.
>> This patch enables deep hierarchy in CGgroup.
>>
> 
> I also had posted the patch. Today Jens applied it to
> origin/for-2.6.38/rc2-holder and after -rc2 will move to 2.6.38/core. At
> that point of time you can drop this patch from the series.
> 

Ok.

Gui

> Vivek
> 
>> Signed-off-by: Gui Jianfeng <guijianfeng@...fujitsu.com>
>> ---
>>  block/blk-cgroup.c |    4 ----
>>  1 files changed, 0 insertions(+), 4 deletions(-)
>>
>> diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
>> index b1febd0..455768a 100644
>> --- a/block/blk-cgroup.c
>> +++ b/block/blk-cgroup.c
>> @@ -1452,10 +1452,6 @@ blkiocg_create(struct cgroup_subsys *subsys, struct cgroup *cgroup)
>>  		goto done;
>>  	}
>>  
>> -	/* Currently we do not support hierarchy deeper than two level (0,1) */
>> -	if (parent != cgroup->top_cgroup)
>> -		return ERR_PTR(-EPERM);
>> -
>>  	blkcg = kzalloc(sizeof(*blkcg), GFP_KERNEL);
>>  	if (!blkcg)
>>  		return ERR_PTR(-ENOMEM);
>> -- 
>> 1.6.5.2
>>
>>
>>
> 
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