struct bmap_rb_extent *ext, *old = NULL;
for (node = ext2fs_rb_first(root); node;
node = ext2fs_rb_next(node)) {
ext = node_to_extent(node);
struct bmap_rb_extent *ext, *old = NULL;
for (node = ext2fs_rb_first(root); node;
node = ext2fs_rb_next(node)) {
ext = node_to_extent(node);