NFSMNT_WANTAUTH
nmp->nm_iflag |= NFSMNT_WANTAUTH;
nmp->nm_iflag &= ~NFSMNT_WANTAUTH;
nmp->nm_iflag &= ~(NFSMNT_WAITAUTH | NFSMNT_WANTAUTH);
if (nmp->nm_iflag & NFSMNT_WANTAUTH) {
nmp->nm_iflag &= ~NFSMNT_WANTAUTH;