Save the write protected flag and check before reopen.
Signed-off-by: NFam Zheng <famz@redhat.com>
Message-Id: <1424839208-5195-1-git-send-email-famz@redhat.com>
[Fixed typo in the name of the new field. - Paolo]
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>