CEPH_MDS_SESSION_HUNG
session->s_state == CEPH_MDS_SESSION_HUNG)
session->s_state != CEPH_MDS_SESSION_HUNG) {
if (session->s_state == CEPH_MDS_SESSION_HUNG) {
s->s_state == CEPH_MDS_SESSION_HUNG ||
s->s_state = CEPH_MDS_SESSION_HUNG;
s->s_state == CEPH_MDS_SESSION_HUNG)
case CEPH_MDS_SESSION_HUNG: return "hung";