rcbag_key
.key_len = sizeof(struct rcbag_key),
(sizeof(struct rcbag_key) + sizeof(rcbag_ptr_t));
struct rcbag_key *bag_key = (struct rcbag_key *)key;
BUILD_BUG_ON(sizeof(struct rcbag_key) > sizeof(union xfs_btree_key));
const struct rcbag_key *kp = (const struct rcbag_key *)key;
const struct rcbag_key *kp1 = (const struct rcbag_key *)k1;
const struct rcbag_key *kp2 = (const struct rcbag_key *)k2;
const struct rcbag_key *kp1 = (const struct rcbag_key *)k1;
const struct rcbag_key *kp2 = (const struct rcbag_key *)k2;
((struct rcbag_key *) \
((index) - 1) * sizeof(struct rcbag_key)))
(maxrecs) * sizeof(struct rcbag_key) + \