Re: Patch Upstream: cgroup: reserve ID 0 for dummy_root and 1 for unified hierarchy

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On 2013/7/18 2:06, Greg KH wrote:
> The patch below seems to reference a patch that showed up in 3.11-rc1,
> so why would it be relevant for the 3.10 or other stable kernels?
> 

Tejun must have made a mistake.

I've confirmed <=3.10 kernels are fine, so you can drop it.

> thanks,
> 
> greg k-h
> 
> 
>> commit: fc76df706123602214da494ba98bccea83e2cfff
>> From: Tejun Heo <tj@xxxxxxxxxx>
>> Date: Tue, 25 Jun 2013 11:53:37 -0700
>> Subject: cgroup: reserve ID 0 for dummy_root and 1 for unified hierarchy
>>
>> Before 1a57423166 ("cgroup: make hierarchy_id use cyclic idr"),
>> hierarchy IDs were allocated from 0.  As the dummy hierarchy was
>> always the one first initialized, it got assigned 0 and all other
>> hierarchies from 1.  The patch accidentally changed the minimum
>> useable ID to 2.

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