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H A Dqcow2-cluster.c9f8e668e Fri Sep 17 15:02:09 GMT 2010 Kevin Wolf <kwolf@redhat.com> qcow2: Get rid of additional sync on COW

We always have a sync for the refcount update when a new cluster is
allocated. If we move this past the COW, we can save an additional sync.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>