bptree_phys_t
bptree_phys_t *bt;
bptree_phys_t *bt;
bptree_phys_t *bt;
bptree_phys_t *ba_phys; /* data in bonus buffer, dirtied if freeing */
bptree_phys_t *bt;
sizeof (bptree_phys_t), tx);
bptree_phys_t *bt;