ntfs_ibm_clear
ntfs_ibm_clear(icx, new_ib_vcn);
ntfs_ibm_clear(icx, new_vcn);
ntfs_ibm_clear(icx, new_vcn);
ntfs_ibm_clear(icx, new_vcn);
ntfs_ibm_clear(icx, new_vcn);
ntfs_ibm_clear(icx, si->new_vcn);
ret = ntfs_ibm_clear(icx, icx->parent_vcn[icx->pindex + 1]);