fs/btrfs/ioctl.c

602 	struct extent_buffer *leaf;
675 	leaf = btrfs_alloc_tree_block(trans, root, 0, objectid, NULL, 0, 0, 0,
677 	if (IS_ERR(leaf)) {
678 		ret = PTR_ERR(leaf);
682 	btrfs_mark_buffer_dirty(trans, leaf);
696 	btrfs_set_root_bytenr(root_item, leaf->start);
700 	btrfs_set_root_used(root_item, leaf->len);
712 	btrfs_tree_unlock(leaf);
729 		btrfs_tree_lock(leaf);
730 		btrfs_clear_buffer_dirty(trans, leaf);
731 		btrfs_tree_unlock(leaf);
732 		btrfs_free_tree_block(trans, objectid, leaf, 0, 1);
733 		free_extent_buffer(leaf);
737 	free_extent_buffer(leaf);
738 	leaf = NULL;
1578 	struct extent_buffer *leaf;
1588 	leaf = path->nodes[0];
1590 	nritems = btrfs_header_nritems(leaf);
1592 	if (btrfs_header_generation(leaf) > sk->max_transid) {
1596 	found_transid = btrfs_header_generation(leaf);
1599 		item_off = btrfs_item_ptr_offset(leaf, i);
1600 		item_len = btrfs_item_size(leaf, i);
1602 		btrfs_item_key_to_cpu(leaf, key, i);
1652 			if (read_extent_buffer_to_user_nofault(leaf, up,
1691 	 *  0: all items from this leaf copied, continue with next
1695 	 *     leaf
1931 	struct extent_buffer *leaf;
1968 			leaf = path->nodes[0];
1971 			iref = btrfs_item_ptr(leaf, slot, struct btrfs_inode_ref);
1972 			len = btrfs_inode_ref_name_len(leaf, iref);
1981 			read_extent_buffer(leaf, ptr,
1994 			leaf = path->nodes[0];
1996 			btrfs_item_key_to_cpu(leaf, &key2, slot);
2006 			 * btree and lock the same leaf.
2053 	leaf = path->nodes[0];
2055 	btrfs_item_key_to_cpu(leaf, &key, slot);
2057 	item_off = btrfs_item_ptr_offset(leaf, slot);
2058 	item_len = btrfs_item_size(leaf, slot);
2060 	rref = btrfs_item_ptr(leaf, slot, struct btrfs_root_ref);
2061 	if (args->dirid != btrfs_root_ref_dirid(leaf, rref)) {
2069 	read_extent_buffer(leaf, args->name, item_off, item_len);
2171 	struct extent_buffer *leaf;
2243 		leaf = path->nodes[0];
2245 		btrfs_item_key_to_cpu(leaf, &key, slot);
2250 			rref = btrfs_item_ptr(leaf, slot, struct btrfs_root_ref);
2251 			subvol_info->dirid = btrfs_root_ref_dirid(leaf, rref);
2253 			item_off = btrfs_item_ptr_offset(leaf, slot)
2255 			item_len = btrfs_item_size(leaf, slot)
2257 			read_extent_buffer(leaf, subvol_info->name,
2289 	struct extent_buffer *leaf;
2326 		leaf = path->nodes[0];
2329 		btrfs_item_key_to_cpu(leaf, &key, slot);
2340 		rref = btrfs_item_ptr(leaf, slot, struct btrfs_root_ref);
2343 				  btrfs_root_ref_dirid(leaf, rref);