nfs4_start_lock_seqid_sync
error = nfs4_start_lock_seqid_sync(lop, mi);
error = nfs4_start_lock_seqid_sync(resend_rqstp->lr_lop, mi);
ep->error = nfs4_start_lock_seqid_sync(lop, VTOMI4(vp));
extern int nfs4_start_lock_seqid_sync(nfs4_lock_owner_t *, mntinfo4_t *);