M_NTFSRDATA
ntfs_toupper_tab = malloc(256 * 256 * sizeof(wchar), M_NTFSRDATA,
free(ntfs_toupper_tab, M_NTFSRDATA, 0);
free(vap->va_datap, M_NTFSRDATA, 0);
vap->va_datap = malloc(vap->va_datalen, M_NTFSRDATA, M_WAITOK);