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virtio-serial-bus: use bh for unthrottling
Instead of calling flush_queued_data when unthrottling, schedule a bh. That way we can return immediately to the caller, and the flush uses the same call path as a have_data for callbackee. No migration change is required because bh are called from vm_stop. Signed-off-by: Alon Levy <alevy@redhat.com> Signed-off-by: Amit Shah <amit.shah@redhat.com>
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Alon Levy
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Amit Shah
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May 27, 2011
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