66 int btrfs_find_root(struct btrfs_root *root, const struct btrfs_key *search_key,  in btrfs_find_root()  argument
75 	ret = btrfs_search_slot(NULL, root, search_key, path, 0, 0);  in btrfs_find_root()
121 		      *root, struct btrfs_key *key, struct btrfs_root_item  in btrfs_update_root()
124 	struct btrfs_fs_info *fs_info = root->fs_info;  in btrfs_update_root()
136 	ret = btrfs_search_slot(trans, root, key, path, 0, 1);  in btrfs_update_root()
144 			root->root_key.objectid);  in btrfs_update_root()
162 		ret = btrfs_search_slot(trans, root, key, path,  in btrfs_update_root()
169 		ret = btrfs_del_item(trans, root, path);  in btrfs_update_root()
175 		ret = btrfs_insert_empty_item(trans, root, path,  in btrfs_update_root()
199 int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root *root,  in btrfs_insert_root()  argument
206 	return btrfs_insert_item(trans, root, key, item, sizeof(*item));  in btrfs_insert_root()
216 	struct btrfs_root *root;  in btrfs_find_orphan_roots()  local
265 		root = btrfs_lookup_fs_root(fs_info, root_key.objectid);  in btrfs_find_orphan_roots()
266 		if (root) {  in btrfs_find_orphan_roots()
268 					  &root->state));  in btrfs_find_orphan_roots()
269 			if (btrfs_root_refs(&root->root_item) == 0) {  in btrfs_find_orphan_roots()
270 				set_bit(BTRFS_ROOT_DEAD_TREE, &root->state);  in btrfs_find_orphan_roots()
271 				btrfs_add_dead_root(root);  in btrfs_find_orphan_roots()
276 		root = btrfs_read_fs_root(tree_root, &root_key);  in btrfs_find_orphan_roots()
277 		err = PTR_ERR_OR_ZERO(root);  in btrfs_find_orphan_roots()
303 		err = btrfs_init_fs_root(root);  in btrfs_find_orphan_roots()
305 			btrfs_free_fs_root(root);  in btrfs_find_orphan_roots()
309 		set_bit(BTRFS_ROOT_ORPHAN_ITEM_INSERTED, &root->state);  in btrfs_find_orphan_roots()
311 		err = btrfs_insert_fs_root(fs_info, root);  in btrfs_find_orphan_roots()
314 			btrfs_free_fs_root(root);  in btrfs_find_orphan_roots()
318 		if (btrfs_root_refs(&root->root_item) == 0) {  in btrfs_find_orphan_roots()
319 			set_bit(BTRFS_ROOT_DEAD_TREE, &root->state);  in btrfs_find_orphan_roots()
320 			btrfs_add_dead_root(root);  in btrfs_find_orphan_roots()
332 	struct btrfs_root *root = trans->fs_info->tree_root;  in btrfs_del_root()  local
339 	ret = btrfs_search_slot(trans, root, key, path, -1, 1);  in btrfs_del_root()
345 	ret = btrfs_del_item(trans, root, path);  in btrfs_del_root()
492 			     struct btrfs_root *root)  in btrfs_update_root_times()  argument
494 	struct btrfs_root_item *item = &root->root_item;  in btrfs_update_root_times()
498 	spin_lock(&root->root_item_lock);  in btrfs_update_root_times()
502 	spin_unlock(&root->root_item_lock);  in btrfs_update_root_times()
519 int btrfs_subvolume_reserve_metadata(struct btrfs_root *root,  in btrfs_subvolume_reserve_metadata()  argument
526 	struct btrfs_fs_info *fs_info = root->fs_info;  in btrfs_subvolume_reserve_metadata()
532 		ret = btrfs_qgroup_reserve_meta_prealloc(root,  in btrfs_subvolume_reserve_metadata()
541 	ret = btrfs_block_rsv_add(root, rsv, num_bytes,  in btrfs_subvolume_reserve_metadata()
548 		btrfs_qgroup_free_meta_prealloc(root, qgroup_num_bytes);  in btrfs_subvolume_reserve_metadata()