595 	int l;  in walk_up_tree()  local
597 	for (l = 0; l < BTRFS_MAX_LEVEL; l++) {  in walk_up_tree()
598 		if (!path->nodes[l])  in walk_up_tree()
600 		if (l) {  in walk_up_tree()
601 			path->slots[l]++;  in walk_up_tree()
602 			if (path->slots[l] <  in walk_up_tree()
603 			    btrfs_header_nritems(path->nodes[l])) {  in walk_up_tree()
604 				*level = l;  in walk_up_tree()
608 		btrfs_tree_unlock_rw(path->nodes[l], path->locks[l]);  in walk_up_tree()
609 		free_extent_buffer(path->nodes[l]);  in walk_up_tree()
610 		path->nodes[l] = NULL;  in walk_up_tree()
611 		path->slots[l] = 0;  in walk_up_tree()
612 		path->locks[l] = 0;  in walk_up_tree()