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    SubjectRe: [PATCH 0/2] resource control file system - aka containers on top of nsproxy!
    On Sat, Mar 03, 2007 at 02:21:00AM -0800, Paul Jackson wrote:
    > Perhaps you could summarize what becomes of this hook, in this
    > brave new world of rcfs ...

    attach_task() still uses a synchronize_rcu before doing a put_nsproxy in
    the rcfs patches. This means cpuset_update_task_memory_state() can read a
    task's cpuset->mems_generation under just a rcu_read_lock() (as it is
    doing currently).

    void cpuset_update_task_memory_state(void)
    {
    tsk = current;
    ...

    } else {
    rcu_read_lock();
    ns = rcu_dereference(tsk->nsproxy);
    my_cpusets_mem_gen =
    ns->ctlr_data[cpuset_ctlr.subsys_id]->mems_generation;
    rcu_read_unlock();
    }

    ...
    }


    --
    Regards,
    vatsa
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