xfs_iext_leaf_nr_entries
nr_entries = xfs_iext_leaf_nr_entries(ifp, cur->leaf, cur->pos);
int nr_prev = xfs_iext_leaf_nr_entries(ifp, leaf->prev, 0), i;
int nr_next = xfs_iext_leaf_nr_entries(ifp, leaf->next, 0), i;
nr_entries = xfs_iext_leaf_nr_entries(ifp, leaf, cur->pos) - 1;