walk_log_tree    3307 fs/btrfs/tree-log.c 	ret = walk_log_tree(trans, log, &wc);
walk_log_tree    6187 fs/btrfs/tree-log.c 	ret = walk_log_tree(trans, log_root_tree, &wc);
walk_log_tree    6262 fs/btrfs/tree-log.c 		ret = walk_log_tree(trans, log, &wc);