Fix deadlock due to lock ordering.
Release content lock before calling cache_inode_rdwr.

Signed-off-by: Rong Zeng <rongzeng@us.ibm.com>
Signed-off-by: Venkateswararao Jujjuri "<jvrao@linux.vnet.ibm.com>
Signed-off-by: Srikrishan Malik <srimalik@in.ibm.com>