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Date:	Thu, 3 Jan 2013 17:20:39 -0500
From:	Tejun Heo <>
To:	Li Zefan <>
Subject: Re: [PATCHSET cgroup/for-3.8] cpuset: decouple cpuset locking from
 cgroup core

Hey, Li.

On Wed, Dec 26, 2012 at 06:51:02PM +0800, Li Zefan wrote:
> I created a cpuset which has cpuset.cpus=1, and I forked a few cpu-hog tasks
> and moved them to this cpuset, and the final operations was offlining cpu1.
> It stucked.

This was caused by not rebuilding sched domains synchronously from cpu
offline path.  I looks like scheduler got confused and put tasks on
the dead cpu.  Should be okay in the updated patchset.  Can you please
test / review that one?


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