+ u32 left_cpos, right_cpos;
+ struct ocfs2_extent_rec *rec = NULL;
+ struct ocfs2_extent_list *new_el;
+ struct ocfs2_path *left_path = NULL, *right_path = NULL;
+ struct buffer_head *bh;
+ struct ocfs2_extent_block *eb;
+
+ if (index > 0) {
+ rec = &el->l_recs[index - 1];
+ } else if (path->p_tree_depth > 0) {
+ status = ocfs2_find_cpos_for_left_leaf(inode->i_sb,
+ path, &left_cpos);
+ if (status)
+ goto out;
+
+ if (left_cpos != 0) {
+ left_path = ocfs2_new_path(path_root_bh(path),
+ path_root_el(path));
+ if (!left_path)
+ goto out;
+
+ status = ocfs2_find_path(inode, left_path, left_cpos);
+ if (status)
+ goto out;
+
+ new_el = path_leaf_el(left_path);
+
+ if (le16_to_cpu(new_el->l_next_free_rec) !=
+ le16_to_cpu(new_el->l_count)) {
+ bh = path_leaf_bh(left_path);
+ eb = (struct ocfs2_extent_block *)bh->b_data;
+ OCFS2_RO_ON_INVALID_EXTENT_BLOCK(inode->i_sb,
+ eb);
+ goto out;
+ }
+ rec = &new_el->l_recs[
+ le16_to_cpu(new_el->l_next_free_rec) - 1];
+ }
+ }