hammer2_inode_lock4
void hammer2_inode_lock4(hammer2_inode_t *ip1, hammer2_inode_t *ip2,
hammer2_inode_lock4(tdip, ip, NULL, NULL);
hammer2_inode_lock4(ip1, ip2, ip3, ip4);
void hammer2_inode_lock4(hammer2_inode_t *ip1, hammer2_inode_t *ip2,
hammer2_inode_lock4(tdip, ip, NULL, NULL);
hammer2_inode_lock4(ip1, ip2, ip3, ip4);