172 	if (!root->fs_info->log_root_tree)  in start_log_trans()
2529 		ret = btrfs_insert_root(trans, log->fs_info->log_root_tree,  in update_log_root()
2532 		ret = btrfs_update_root(trans, log->fs_info->log_root_tree,  in update_log_root()
2631 	struct btrfs_root *log_root_tree = root->fs_info->log_root_tree;  in btrfs_sync_log()  local
2711 	mutex_lock(&log_root_tree->log_mutex);  in btrfs_sync_log()
2712 	atomic_inc(&log_root_tree->log_batch);  in btrfs_sync_log()
2713 	atomic_inc(&log_root_tree->log_writers);  in btrfs_sync_log()
2715 	index2 = log_root_tree->log_transid % 2;  in btrfs_sync_log()
2716 	list_add_tail(&root_log_ctx.list, &log_root_tree->log_ctxs[index2]);  in btrfs_sync_log()
2717 	root_log_ctx.log_transid = log_root_tree->log_transid;  in btrfs_sync_log()
2719 	mutex_unlock(&log_root_tree->log_mutex);  in btrfs_sync_log()
2723 	mutex_lock(&log_root_tree->log_mutex);  in btrfs_sync_log()
2724 	if (atomic_dec_and_test(&log_root_tree->log_writers)) {  in btrfs_sync_log()
2726 		if (waitqueue_active(&log_root_tree->log_writer_wait))  in btrfs_sync_log()
2727 			wake_up(&log_root_tree->log_writer_wait);  in btrfs_sync_log()
2739 			mutex_unlock(&log_root_tree->log_mutex);  in btrfs_sync_log()
2744 		mutex_unlock(&log_root_tree->log_mutex);  in btrfs_sync_log()
2749 	if (log_root_tree->log_transid_committed >= root_log_ctx.log_transid) {  in btrfs_sync_log()
2751 		mutex_unlock(&log_root_tree->log_mutex);  in btrfs_sync_log()
2757 	if (atomic_read(&log_root_tree->log_commit[index2])) {  in btrfs_sync_log()
2762 		wait_log_commit(trans, log_root_tree,  in btrfs_sync_log()
2764 		mutex_unlock(&log_root_tree->log_mutex);  in btrfs_sync_log()
2769 	ASSERT(root_log_ctx.log_transid == log_root_tree->log_transid);  in btrfs_sync_log()
2770 	atomic_set(&log_root_tree->log_commit[index2], 1);  in btrfs_sync_log()
2772 	if (atomic_read(&log_root_tree->log_commit[(index2 + 1) % 2])) {  in btrfs_sync_log()
2773 		wait_log_commit(trans, log_root_tree,  in btrfs_sync_log()
2777 	wait_for_writer(trans, log_root_tree);  in btrfs_sync_log()
2787 		mutex_unlock(&log_root_tree->log_mutex);  in btrfs_sync_log()
2792 	ret = btrfs_write_marked_extents(log_root_tree,  in btrfs_sync_log()
2793 					 &log_root_tree->dirty_log_pages,  in btrfs_sync_log()
2800 		mutex_unlock(&log_root_tree->log_mutex);  in btrfs_sync_log()
2805 		ret = btrfs_wait_marked_extents(log_root_tree,  in btrfs_sync_log()
2806 						&log_root_tree->dirty_log_pages,  in btrfs_sync_log()
2811 		mutex_unlock(&log_root_tree->log_mutex);  in btrfs_sync_log()
2817 				log_root_tree->node->start);  in btrfs_sync_log()
2819 				btrfs_header_level(log_root_tree->node));  in btrfs_sync_log()
2821 	log_root_tree->log_transid++;  in btrfs_sync_log()
2822 	mutex_unlock(&log_root_tree->log_mutex);  in btrfs_sync_log()
2848 	btrfs_remove_all_log_ctxs(log_root_tree, index2, ret);  in btrfs_sync_log()
2850 	mutex_lock(&log_root_tree->log_mutex);  in btrfs_sync_log()
2851 	log_root_tree->log_transid_committed++;  in btrfs_sync_log()
2852 	atomic_set(&log_root_tree->log_commit[index2], 0);  in btrfs_sync_log()
2853 	mutex_unlock(&log_root_tree->log_mutex);  in btrfs_sync_log()
2855 	if (waitqueue_active(&log_root_tree->log_commit_wait[index2]))  in btrfs_sync_log()
2856 		wake_up(&log_root_tree->log_commit_wait[index2]);  in btrfs_sync_log()
2926 	if (fs_info->log_root_tree) {  in btrfs_free_log_root_tree()
2927 		free_log_tree(trans, fs_info->log_root_tree);  in btrfs_free_log_root_tree()
2928 		fs_info->log_root_tree = NULL;  in btrfs_free_log_root_tree()
5212 int btrfs_recover_log_trees(struct btrfs_root *log_root_tree)  in btrfs_recover_log_trees()  argument
5221 	struct btrfs_fs_info *fs_info = log_root_tree->fs_info;  in btrfs_recover_log_trees()
5242 	ret = walk_log_tree(trans, log_root_tree, &wc);  in btrfs_recover_log_trees()
5255 		ret = btrfs_search_slot(NULL, log_root_tree, &key, path, 0, 0);  in btrfs_recover_log_trees()
5273 		log = btrfs_read_fs_root(log_root_tree, &found_key);  in btrfs_recover_log_trees()
5339 	free_extent_buffer(log_root_tree->node);  in btrfs_recover_log_trees()
5340 	log_root_tree->log_root = NULL;  in btrfs_recover_log_trees()
5342 	kfree(log_root_tree);  in btrfs_recover_log_trees()