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由 Stefan Hajnoczi 提交于
The qcow2, qcow, and vmdk block drivers are based on coroutines. They have a coroutine mutex which protects internal state. We can convert the .bdrv_is_allocated() function to .bdrv_co_is_allocated() by holding the mutex around the cluster lookup operation. Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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