xfs_iext_node_nr_entries
nr_entries = xfs_iext_node_nr_entries(node, pos);
int nr_prev = xfs_iext_node_nr_entries(prev, 0), i;
if (*pos + 1 < xfs_iext_node_nr_entries(parent, *pos)) {
int nr_next = xfs_iext_node_nr_entries(next, 0), i;
nr_entries = xfs_iext_node_nr_entries(node, pos) - 1;