xfs_iext_peek_next_extent
if (xfs_iext_peek_next_extent(ifp, &bma->icur, &RIGHT)) {
if (xfs_iext_peek_next_extent(ifp, icur, &RIGHT)) {
if (xfs_iext_peek_next_extent(ifp, &icur, &next)) {
while (xfs_iext_peek_next_extent(ifp, &info->icur, &got)) {