xfs_btree_keycmp_ne
if (xfs_btree_keycmp_ne(cur, &block_key, parent_low_key)) {
if (xfs_btree_keycmp_ne(cur, block_high_key, parent_high_key))
if (xfs_btree_keycmp_ne(cur, &block_keys, parent_keys))
if (xfs_btree_keycmp_ne(cur, high_bk, high_pk))