NFSD4_CLIENT_CONFIRMED
if (test_bit(NFSD4_CLIENT_CONFIRMED, &clp->cl_flags))
else if (test_bit(NFSD4_CLIENT_CONFIRMED, &clp->cl_flags))
clear_bit(NFSD4_CLIENT_CONFIRMED, &clp->cl_flags);
set_bit(NFSD4_CLIENT_CONFIRMED, &clp->cl_flags);