52  * path: the path we search
63 		    struct btrfs_path *path, struct btrfs_root_item *root_item,  in btrfs_find_root()  argument
71 	ret = btrfs_search_slot(NULL, root, search_key, path, 0, 0);  in btrfs_find_root()
80 		if (path->slots[0] == 0)  in btrfs_find_root()
82 		path->slots[0]--;  in btrfs_find_root()
86 	l = path->nodes[0];  in btrfs_find_root()
87 	slot = path->slots[0];  in btrfs_find_root()
101 	btrfs_release_path(path);  in btrfs_find_root()
121 	struct btrfs_path *path;  in btrfs_update_root()  local
128 	path = btrfs_alloc_path();  in btrfs_update_root()
129 	if (!path)  in btrfs_update_root()
132 	ret = btrfs_search_slot(trans, root, key, path, 0, 1);  in btrfs_update_root()
146 	l = path->nodes[0];  in btrfs_update_root()
147 	slot = path->slots[0];  in btrfs_update_root()
157 		btrfs_release_path(path);  in btrfs_update_root()
158 		ret = btrfs_search_slot(trans, root, key, path,  in btrfs_update_root()
165 		ret = btrfs_del_item(trans, root, path);  in btrfs_update_root()
170 		btrfs_release_path(path);  in btrfs_update_root()
171 		ret = btrfs_insert_empty_item(trans, root, path,  in btrfs_update_root()
177 		l = path->nodes[0];  in btrfs_update_root()
178 		slot = path->slots[0];  in btrfs_update_root()
189 	btrfs_mark_buffer_dirty(path->nodes[0]);  in btrfs_update_root()
191 	btrfs_free_path(path);  in btrfs_update_root()
209 	struct btrfs_path *path;  in btrfs_find_orphan_roots()  local
215 	path = btrfs_alloc_path();  in btrfs_find_orphan_roots()
216 	if (!path)  in btrfs_find_orphan_roots()
226 		ret = btrfs_search_slot(NULL, tree_root, &key, path, 0, 0);  in btrfs_find_orphan_roots()
232 		leaf = path->nodes[0];  in btrfs_find_orphan_roots()
233 		if (path->slots[0] >= btrfs_header_nritems(leaf)) {  in btrfs_find_orphan_roots()
234 			ret = btrfs_next_leaf(tree_root, path);  in btrfs_find_orphan_roots()
239 			leaf = path->nodes[0];  in btrfs_find_orphan_roots()
242 		btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);  in btrfs_find_orphan_roots()
243 		btrfs_release_path(path);  in btrfs_find_orphan_roots()
259 			btrfs_release_path(path);  in btrfs_find_orphan_roots()
302 	btrfs_free_path(path);  in btrfs_find_orphan_roots()
311 	struct btrfs_path *path;  in btrfs_del_root()  local
314 	path = btrfs_alloc_path();  in btrfs_del_root()
315 	if (!path)  in btrfs_del_root()
317 	ret = btrfs_search_slot(trans, root, key, path, -1, 1);  in btrfs_del_root()
323 	ret = btrfs_del_item(trans, root, path);  in btrfs_del_root()
325 	btrfs_free_path(path);  in btrfs_del_root()
335 	struct btrfs_path *path;  in btrfs_del_root_ref()  local
342 	path = btrfs_alloc_path();  in btrfs_del_root_ref()
343 	if (!path)  in btrfs_del_root_ref()
350 	ret = btrfs_search_slot(trans, tree_root, &key, path, -1, 1);  in btrfs_del_root_ref()
354 		leaf = path->nodes[0];  in btrfs_del_root_ref()
355 		ref = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_del_root_ref()
366 		ret = btrfs_del_item(trans, tree_root, path);  in btrfs_del_root_ref()
375 		btrfs_release_path(path);  in btrfs_del_root_ref()
383 	btrfs_free_path(path);  in btrfs_del_root_ref()
400  * Will return 0, -ENOMEM, or anything from the CoW path
409 	struct btrfs_path *path;  in btrfs_add_root_ref()  local
414 	path = btrfs_alloc_path();  in btrfs_add_root_ref()
415 	if (!path)  in btrfs_add_root_ref()
422 	ret = btrfs_insert_empty_item(trans, tree_root, path, &key,  in btrfs_add_root_ref()
426 		btrfs_free_path(path);  in btrfs_add_root_ref()
430 	leaf = path->nodes[0];  in btrfs_add_root_ref()
431 	ref = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_root_ref);  in btrfs_add_root_ref()
440 		btrfs_release_path(path);  in btrfs_add_root_ref()
447 	btrfs_free_path(path);  in btrfs_add_root_ref()