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SubjectRe: [4.2] commit d59cfc09c32 (sched, cgroup: replace signal_struct->group_rwsem with a global percpu_rwsem) causes regression for libvirt/kvm
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On 16/09/2015 16:16, Tejun Heo wrote:
> On Wed, Sep 16, 2015 at 02:22:49PM +0200, Oleg Nesterov wrote:
>>> > > If the revert isn't easy, I think backporting rcu_sync is the best bet.
>> >
>> > I leave this to Paul and Tejun... at least I think this is not v4.2 material.
> Will route reverts through cgroup branch. Should be pretty painless.
> Nice job on percpu_rwsem. It's so much better than having to come up
> with a separate middleground solution.

Thanks all for the quick resolution!

Paolo


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