spin_lock_init(&cli->cl_write_page_hist.oh_lock);
spin_lock_init(&cli->cl_read_offset_hist.oh_lock);
spin_lock_init(&cli->cl_write_offset_hist.oh_lock);
+ spin_lock_init(&cli->cl_batch_rpc_hist.oh_lock);
/* lru for osc. */
INIT_LIST_HEAD(&cli->cl_lru_osc);