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    Subject[RFC PATCH 0/8] vhost_tasks: Use CLONE_THREAD/SIGHAND
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    This patch allows the vhost and vhost_task code to use CLONE_THREAD,
    CLONE_SIGHAND and CLONE_FILES. It's a RFC because I didn't do all the
    normal testing, haven't coverted vsock and vdpa, and I know you guys
    will not like the first patch. However, I think it better shows what
    we need from the signal code and how we can support signals in the
    vhost_task layer.

    Note that I took the super simple route and kicked off some work to
    the system workqueue. We can do more invassive approaches:
    1. Modify the vhost drivers so they can check for IO completions using
    a non-blocking interface. We then don't need to run from the system
    workqueue and can run from the vhost_task.

    2. We could drop patch 1 and just say we are doing a polling type
    of approach. We then modify the vhost layer similar to #1 where we
    can check for completions using a non-blocking interface and use
    the vhost_task task.



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