fs/btrfs/qgroup.c

2188  * 2) Mark the final tree blocks in @src_path and @dst_path qgroup dirty
2207 	struct btrfs_path *src_path;
2218 	src_path = btrfs_alloc_path();
2219 	if (!src_path) {
2229 	/* For src_path */
2231 	src_path->nodes[root_level] = src_eb;
2232 	src_path->slots[root_level] = dst_path->slots[root_level];
2233 	src_path->locks[root_level] = 0;
2240 		if (src_path->nodes[cur_level] == NULL) {
2244 			eb = src_path->nodes[cur_level + 1];
2245 			parent_slot = src_path->slots[cur_level + 1];
2253 			src_path->nodes[cur_level] = eb;
2256 			src_path->locks[cur_level] = BTRFS_READ_LOCK;
2259 		src_path->slots[cur_level] = dst_path->slots[cur_level];
2263 			btrfs_node_key_to_cpu(src_path->nodes[cur_level],
2264 					&src_key, src_path->slots[cur_level]);
2268 			btrfs_item_key_to_cpu(src_path->nodes[cur_level],
2269 					&src_key, src_path->slots[cur_level]);
2280 	 * Now both @dst_path and @src_path have been populated, record the tree
2283 	ret = btrfs_qgroup_trace_extent(trans, src_path->nodes[dst_level]->start,
2294 		ret = btrfs_qgroup_trace_leaf_items(trans, src_path->nodes[0]);
2300 	btrfs_free_path(src_path);