CEPH_MDS_R_GOT_SAFE
(test_bit(CEPH_MDS_R_GOT_SAFE, &req->r_req_flags) && head->safe)) {
if (test_bit(CEPH_MDS_R_GOT_SAFE, &req->r_req_flags)) {
set_bit(CEPH_MDS_R_GOT_SAFE, &req->r_req_flags);