315 	if (!root->reloc_root)  in have_reloc_root()
322 	struct btrfs_root *reloc_root;  in btrfs_should_ignore_reloc_root()  local
331 	reloc_root = root->reloc_root;  in btrfs_should_ignore_reloc_root()
332 	if (!reloc_root)  in btrfs_should_ignore_reloc_root()
335 	if (btrfs_header_generation(reloc_root->commit_root) ==  in btrfs_should_ignore_reloc_root()
540 	struct btrfs_root *reloc_root = src->reloc_root;  in clone_backref_node()  local
557 			BUG_ON(node->new_bytenr != reloc_root->node->start);  in clone_backref_node()
562 					   reloc_root->commit_root->start);  in clone_backref_node()
734 	struct btrfs_root *reloc_root;  in create_reloc_root()  local
797 	reloc_root = btrfs_read_tree_root(fs_info->tree_root, &root_key);  in create_reloc_root()
798 	BUG_ON(IS_ERR(reloc_root));  in create_reloc_root()
799 	set_bit(BTRFS_ROOT_SHAREABLE, &reloc_root->state);  in create_reloc_root()
800 	reloc_root->last_trans = trans->transid;  in create_reloc_root()
801 	return reloc_root;  in create_reloc_root()
815 	struct btrfs_root *reloc_root;  in btrfs_init_reloc_root()  local
839 	if (root->reloc_root) {  in btrfs_init_reloc_root()
840 		reloc_root = root->reloc_root;  in btrfs_init_reloc_root()
841 		reloc_root->last_trans = trans->transid;  in btrfs_init_reloc_root()
858 	reloc_root = create_reloc_root(trans, root, root->root_key.objectid);  in btrfs_init_reloc_root()
862 	ret = __add_reloc_root(reloc_root);  in btrfs_init_reloc_root()
864 	root->reloc_root = btrfs_grab_root(reloc_root);  in btrfs_init_reloc_root()
875 	struct btrfs_root *reloc_root;  in btrfs_update_reloc_root()  local
882 	reloc_root = root->reloc_root;  in btrfs_update_reloc_root()
883 	root_item = &reloc_root->root_item;  in btrfs_update_reloc_root()
890 	btrfs_grab_root(reloc_root);  in btrfs_update_reloc_root()
901 		__del_reloc_root(reloc_root);  in btrfs_update_reloc_root()
904 	if (reloc_root->commit_root != reloc_root->node) {  in btrfs_update_reloc_root()
905 		__update_reloc_root(reloc_root);  in btrfs_update_reloc_root()
906 		btrfs_set_root_node(root_item, reloc_root->node);  in btrfs_update_reloc_root()
907 		free_extent_buffer(reloc_root->commit_root);  in btrfs_update_reloc_root()
908 		reloc_root->commit_root = btrfs_root_node(reloc_root);  in btrfs_update_reloc_root()
912 				&reloc_root->root_key, root_item);  in btrfs_update_reloc_root()
914 	btrfs_put_root(reloc_root);  in btrfs_update_reloc_root()
1568 	struct btrfs_root *reloc_root = root->reloc_root;  in insert_dirty_subvol()  local
1573 	ASSERT(reloc_root);  in insert_dirty_subvol()
1575 	reloc_root_item = &reloc_root->root_item;  in insert_dirty_subvol()
1599 			struct btrfs_root *reloc_root = root->reloc_root;  in clean_dirty_subvols()  local
1602 			root->reloc_root = NULL;  in clean_dirty_subvols()
1609 			if (reloc_root) {  in clean_dirty_subvols()
1615 				ret2 = btrfs_drop_snapshot(reloc_root, 0, 1);  in clean_dirty_subvols()
1617 					btrfs_put_root(reloc_root);  in clean_dirty_subvols()
1647 	struct btrfs_root *reloc_root;  in merge_reloc_root()  local
1664 	reloc_root = root->reloc_root;  in merge_reloc_root()
1665 	root_item = &reloc_root->root_item;  in merge_reloc_root()
1669 		atomic_inc(&reloc_root->node->refs);  in merge_reloc_root()
1670 		path->nodes[level] = reloc_root->node;  in merge_reloc_root()
1678 		ret = btrfs_search_slot(NULL, reloc_root, &key, path, 0, 0);  in merge_reloc_root()
1728 		reloc_root->last_trans = trans->transid;  in merge_reloc_root()
1734 		ret = walk_down_reloc_tree(reloc_root, path, &level);  in merge_reloc_root()
1746 			ret = replace_path(trans, rc, root, reloc_root, path,  in merge_reloc_root()
1761 		ret = walk_up_reloc_tree(reloc_root, path, &level);  in merge_reloc_root()
1816 	struct btrfs_root *reloc_root;  in prepare_to_merge()  local
1856 		reloc_root = list_entry(rc->reloc_roots.next,  in prepare_to_merge()
1858 		list_del_init(&reloc_root->root_list);  in prepare_to_merge()
1860 		root = btrfs_get_fs_root(fs_info, reloc_root->root_key.offset,  in prepare_to_merge()
1863 		BUG_ON(root->reloc_root != reloc_root);  in prepare_to_merge()
1870 			btrfs_set_root_refs(&reloc_root->root_item, 1);  in prepare_to_merge()
1873 		list_add(&reloc_root->root_list, &reloc_roots);  in prepare_to_merge()
1889 	struct btrfs_root *reloc_root, *tmp;  in free_reloc_roots()  local
1891 	list_for_each_entry_safe(reloc_root, tmp, list, root_list)  in free_reloc_roots()
1892 		__del_reloc_root(reloc_root);  in free_reloc_roots()
1900 	struct btrfs_root *reloc_root;  in merge_reloc_roots()  local
1919 		reloc_root = list_entry(reloc_roots.next,  in merge_reloc_roots()
1922 		root = btrfs_get_fs_root(fs_info, reloc_root->root_key.offset,  in merge_reloc_roots()
1924 		if (btrfs_root_refs(&reloc_root->root_item) > 0) {  in merge_reloc_roots()
1926 			BUG_ON(root->reloc_root != reloc_root);  in merge_reloc_roots()
1930 				if (list_empty(&reloc_root->root_list))  in merge_reloc_roots()
1931 					list_add_tail(&reloc_root->root_list,  in merge_reloc_roots()
1937 				if (root->reloc_root == reloc_root) {  in merge_reloc_roots()
1938 					root->reloc_root = NULL;  in merge_reloc_roots()
1939 					btrfs_put_root(reloc_root);  in merge_reloc_roots()
1946 			list_del_init(&reloc_root->root_list);  in merge_reloc_roots()
1948 			list_add_tail(&reloc_root->reloc_dirty_list,  in merge_reloc_roots()
1998 				      struct btrfs_root *reloc_root)  in record_reloc_root_in_trans()  argument
2000 	struct btrfs_fs_info *fs_info = reloc_root->fs_info;  in record_reloc_root_in_trans()
2004 	if (reloc_root->last_trans == trans->transid)  in record_reloc_root_in_trans()
2007 	root = btrfs_get_fs_root(fs_info, reloc_root->root_key.offset, false);  in record_reloc_root_in_trans()
2009 	BUG_ON(root->reloc_root != reloc_root);  in record_reloc_root_in_trans()
2040 		root = root->reloc_root;  in select_reloc_root()
2501 			root = root->reloc_root;  in relocate_tree_block()
3720 	struct btrfs_root *reloc_root;  in btrfs_recover_relocation()  local
3757 		reloc_root = btrfs_read_tree_root(root, &key);  in btrfs_recover_relocation()
3758 		if (IS_ERR(reloc_root)) {  in btrfs_recover_relocation()
3759 			err = PTR_ERR(reloc_root);  in btrfs_recover_relocation()
3763 		set_bit(BTRFS_ROOT_SHAREABLE, &reloc_root->state);  in btrfs_recover_relocation()
3764 		list_add(&reloc_root->root_list, &reloc_roots);  in btrfs_recover_relocation()
3766 		if (btrfs_root_refs(&reloc_root->root_item) > 0) {  in btrfs_recover_relocation()
3768 					reloc_root->root_key.offset, false);  in btrfs_recover_relocation()
3775 				ret = mark_garbage_root(reloc_root);  in btrfs_recover_relocation()
3814 		reloc_root = list_entry(reloc_roots.next,  in btrfs_recover_relocation()
3816 		list_del(&reloc_root->root_list);  in btrfs_recover_relocation()
3818 		if (btrfs_root_refs(&reloc_root->root_item) == 0) {  in btrfs_recover_relocation()
3819 			list_add_tail(&reloc_root->root_list,  in btrfs_recover_relocation()
3824 		fs_root = btrfs_get_fs_root(fs_info, reloc_root->root_key.offset,  in btrfs_recover_relocation()
3828 			list_add_tail(&reloc_root->root_list, &reloc_roots);  in btrfs_recover_relocation()
3833 		err = __add_reloc_root(reloc_root);  in btrfs_recover_relocation()
3835 		fs_root->reloc_root = btrfs_grab_root(reloc_root);  in btrfs_recover_relocation()
3996 	root = root->reloc_root;  in btrfs_reloc_pre_snapshot()
4023 	struct btrfs_root *reloc_root;  in btrfs_reloc_post_snapshot()  local
4043 	reloc_root = create_reloc_root(trans, root->reloc_root,  in btrfs_reloc_post_snapshot()
4045 	if (IS_ERR(reloc_root))  in btrfs_reloc_post_snapshot()
4046 		return PTR_ERR(reloc_root);  in btrfs_reloc_post_snapshot()
4048 	ret = __add_reloc_root(reloc_root);  in btrfs_reloc_post_snapshot()
4050 	new_root->reloc_root = btrfs_grab_root(reloc_root);  in btrfs_reloc_post_snapshot()
4053 		ret = clone_backref_node(trans, rc, root, reloc_root);  in btrfs_reloc_post_snapshot()