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()
732 	struct btrfs_root *reloc_root;  in create_reloc_root()  local
808 	reloc_root = btrfs_read_tree_root(fs_info->tree_root, &root_key);  in create_reloc_root()
809 	if (IS_ERR(reloc_root)) {  in create_reloc_root()
810 		ret = PTR_ERR(reloc_root);  in create_reloc_root()
813 	set_bit(BTRFS_ROOT_SHAREABLE, &reloc_root->state);  in create_reloc_root()
814 	reloc_root->last_trans = trans->transid;  in create_reloc_root()
815 	return reloc_root;  in create_reloc_root()
835 	struct btrfs_root *reloc_root;  in btrfs_init_reloc_root()  local
859 	if (root->reloc_root) {  in btrfs_init_reloc_root()
860 		reloc_root = root->reloc_root;  in btrfs_init_reloc_root()
861 		reloc_root->last_trans = trans->transid;  in btrfs_init_reloc_root()
878 	reloc_root = create_reloc_root(trans, root, root->root_key.objectid);  in btrfs_init_reloc_root()
882 	ret = __add_reloc_root(reloc_root);  in btrfs_init_reloc_root()
884 	root->reloc_root = btrfs_grab_root(reloc_root);  in btrfs_init_reloc_root()
895 	struct btrfs_root *reloc_root;  in btrfs_update_reloc_root()  local
902 	reloc_root = root->reloc_root;  in btrfs_update_reloc_root()
903 	root_item = &reloc_root->root_item;  in btrfs_update_reloc_root()
910 	btrfs_grab_root(reloc_root);  in btrfs_update_reloc_root()
921 		__del_reloc_root(reloc_root);  in btrfs_update_reloc_root()
924 	if (reloc_root->commit_root != reloc_root->node) {  in btrfs_update_reloc_root()
925 		__update_reloc_root(reloc_root);  in btrfs_update_reloc_root()
926 		btrfs_set_root_node(root_item, reloc_root->node);  in btrfs_update_reloc_root()
927 		free_extent_buffer(reloc_root->commit_root);  in btrfs_update_reloc_root()
928 		reloc_root->commit_root = btrfs_root_node(reloc_root);  in btrfs_update_reloc_root()
932 				&reloc_root->root_key, root_item);  in btrfs_update_reloc_root()
933 	btrfs_put_root(reloc_root);  in btrfs_update_reloc_root()
1586 	struct btrfs_root *reloc_root = root->reloc_root;  in insert_dirty_subvol()  local
1591 	ASSERT(reloc_root);  in insert_dirty_subvol()
1593 	reloc_root_item = &reloc_root->root_item;  in insert_dirty_subvol()
1617 			struct btrfs_root *reloc_root = root->reloc_root;  in clean_dirty_subvols()  local
1620 			root->reloc_root = NULL;  in clean_dirty_subvols()
1627 			if (reloc_root) {  in clean_dirty_subvols()
1633 				ret2 = btrfs_drop_snapshot(reloc_root, 0, 1);  in clean_dirty_subvols()
1635 					btrfs_put_root(reloc_root);  in clean_dirty_subvols()
1665 	struct btrfs_root *reloc_root;  in merge_reloc_root()  local
1682 	reloc_root = root->reloc_root;  in merge_reloc_root()
1683 	root_item = &reloc_root->root_item;  in merge_reloc_root()
1687 		atomic_inc(&reloc_root->node->refs);  in merge_reloc_root()
1688 		path->nodes[level] = reloc_root->node;  in merge_reloc_root()
1696 		ret = btrfs_search_slot(NULL, reloc_root, &key, path, 0, 0);  in merge_reloc_root()
1746 		reloc_root->last_trans = trans->transid;  in merge_reloc_root()
1752 		ret = walk_down_reloc_tree(reloc_root, path, &level);  in merge_reloc_root()
1764 			ret = replace_path(trans, rc, root, reloc_root, path,  in merge_reloc_root()
1779 		ret = walk_up_reloc_tree(reloc_root, path, &level);  in merge_reloc_root()
1834 	struct btrfs_root *reloc_root;  in prepare_to_merge()  local
1874 		reloc_root = list_entry(rc->reloc_roots.next,  in prepare_to_merge()
1876 		list_del_init(&reloc_root->root_list);  in prepare_to_merge()
1878 		root = btrfs_get_fs_root(fs_info, reloc_root->root_key.offset,  in prepare_to_merge()
1881 		BUG_ON(root->reloc_root != reloc_root);  in prepare_to_merge()
1888 			btrfs_set_root_refs(&reloc_root->root_item, 1);  in prepare_to_merge()
1891 		list_add(&reloc_root->root_list, &reloc_roots);  in prepare_to_merge()
1907 	struct btrfs_root *reloc_root, *tmp;  in free_reloc_roots()  local
1909 	list_for_each_entry_safe(reloc_root, tmp, list, root_list)  in free_reloc_roots()
1910 		__del_reloc_root(reloc_root);  in free_reloc_roots()
1918 	struct btrfs_root *reloc_root;  in merge_reloc_roots()  local
1937 		reloc_root = list_entry(reloc_roots.next,  in merge_reloc_roots()
1940 		root = btrfs_get_fs_root(fs_info, reloc_root->root_key.offset,  in merge_reloc_roots()
1942 		if (btrfs_root_refs(&reloc_root->root_item) > 0) {  in merge_reloc_roots()
1944 			BUG_ON(root->reloc_root != reloc_root);  in merge_reloc_roots()
1948 				if (list_empty(&reloc_root->root_list))  in merge_reloc_roots()
1949 					list_add_tail(&reloc_root->root_list,  in merge_reloc_roots()
1955 				if (root->reloc_root == reloc_root) {  in merge_reloc_roots()
1956 					root->reloc_root = NULL;  in merge_reloc_roots()
1957 					btrfs_put_root(reloc_root);  in merge_reloc_roots()
1964 			list_del_init(&reloc_root->root_list);  in merge_reloc_roots()
1966 			list_add_tail(&reloc_root->reloc_dirty_list,  in merge_reloc_roots()
2016 				      struct btrfs_root *reloc_root)  in record_reloc_root_in_trans()  argument
2018 	struct btrfs_fs_info *fs_info = reloc_root->fs_info;  in record_reloc_root_in_trans()
2022 	if (reloc_root->last_trans == trans->transid)  in record_reloc_root_in_trans()
2025 	root = btrfs_get_fs_root(fs_info, reloc_root->root_key.offset, false);  in record_reloc_root_in_trans()
2027 	BUG_ON(root->reloc_root != reloc_root);  in record_reloc_root_in_trans()
2058 		root = root->reloc_root;  in select_reloc_root()
2519 			root = root->reloc_root;  in relocate_tree_block()
3743 	struct btrfs_root *reloc_root;  in btrfs_recover_relocation()  local
3780 		reloc_root = btrfs_read_tree_root(root, &key);  in btrfs_recover_relocation()
3781 		if (IS_ERR(reloc_root)) {  in btrfs_recover_relocation()
3782 			err = PTR_ERR(reloc_root);  in btrfs_recover_relocation()
3786 		set_bit(BTRFS_ROOT_SHAREABLE, &reloc_root->state);  in btrfs_recover_relocation()
3787 		list_add(&reloc_root->root_list, &reloc_roots);  in btrfs_recover_relocation()
3789 		if (btrfs_root_refs(&reloc_root->root_item) > 0) {  in btrfs_recover_relocation()
3791 					reloc_root->root_key.offset, false);  in btrfs_recover_relocation()
3798 				ret = mark_garbage_root(reloc_root);  in btrfs_recover_relocation()
3837 		reloc_root = list_entry(reloc_roots.next,  in btrfs_recover_relocation()
3839 		list_del(&reloc_root->root_list);  in btrfs_recover_relocation()
3841 		if (btrfs_root_refs(&reloc_root->root_item) == 0) {  in btrfs_recover_relocation()
3842 			list_add_tail(&reloc_root->root_list,  in btrfs_recover_relocation()
3847 		fs_root = btrfs_get_fs_root(fs_info, reloc_root->root_key.offset,  in btrfs_recover_relocation()
3851 			list_add_tail(&reloc_root->root_list, &reloc_roots);  in btrfs_recover_relocation()
3856 		err = __add_reloc_root(reloc_root);  in btrfs_recover_relocation()
3858 		fs_root->reloc_root = btrfs_grab_root(reloc_root);  in btrfs_recover_relocation()
4019 	root = root->reloc_root;  in btrfs_reloc_pre_snapshot()
4046 	struct btrfs_root *reloc_root;  in btrfs_reloc_post_snapshot()  local
4066 	reloc_root = create_reloc_root(trans, root->reloc_root,  in btrfs_reloc_post_snapshot()
4068 	if (IS_ERR(reloc_root))  in btrfs_reloc_post_snapshot()
4069 		return PTR_ERR(reloc_root);  in btrfs_reloc_post_snapshot()
4071 	ret = __add_reloc_root(reloc_root);  in btrfs_reloc_post_snapshot()
4073 	new_root->reloc_root = btrfs_grab_root(reloc_root);  in btrfs_reloc_post_snapshot()
4076 		ret = clone_backref_node(trans, rc, root, reloc_root);  in btrfs_reloc_post_snapshot()