2272 	u64 root_id;  member
2306 	if (b1->root_id < b2->root_id)  in backref_comp()
2308 	else if (b1->root_id > b2->root_id)  in backref_comp()
2362 static noinline int record_one_backref(u64 inum, u64 offset, u64 root_id,  in record_one_backref()  argument
2380 	if (BTRFS_I(inode)->root->root_key.objectid == root_id &&  in record_one_backref()
2384 	key.objectid = root_id;  in record_one_backref()
2394 			 inum, offset, root_id);  in record_one_backref()
2467 	backref->root_id = root_id;  in record_one_backref()
2559 	if (prev && prev->root_id == backref->root_id &&  in relink_extent_backref()
2565 	key.objectid = backref->root_id;  in relink_extent_backref()
2715 			backref->root_id, backref->inum,  in relink_extent_backref()