/* Join two lists, put "add" at the end of "head". */
static inline void
_bt_list_splice_tail (struct bt_list_head *add, struct bt_list_head *head)
/* Join two lists, put "add" at the end of "head". */
static inline void
_bt_list_splice_tail (struct bt_list_head *add, struct bt_list_head *head)