virtio: fix suspend when using virtio_balloon
Break out of wait_event_interruptible() if freezing has been requested, in the vballoon thread. Without this change vballoon refuses to stop and the system can't suspend. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: stable@kernel.org
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@ -190,7 +190,8 @@ static int balloon(void *_vballoon)
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try_to_freeze();
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wait_event_interruptible(vb->config_change,
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(diff = towards_target(vb)) != 0
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|| kthread_should_stop());
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|| kthread_should_stop()
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|| freezing(current));
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if (diff > 0)
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fill_balloon(vb, diff);
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else if (diff < 0)
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