ceph_con_flag_clear
void ceph_con_flag_clear(struct ceph_connection *con, unsigned long con_flag);
ceph_con_flag_clear(con, CEPH_CON_F_WRITE_PENDING);
ceph_con_flag_clear(con, CEPH_CON_F_SOCK_CLOSED);
ceph_con_flag_clear(con, CEPH_CON_F_LOSSYTX); /* so we retry next
ceph_con_flag_clear(con, CEPH_CON_F_KEEPALIVE_PENDING);
ceph_con_flag_clear(con, CEPH_CON_F_WRITE_PENDING);
ceph_con_flag_clear(con, CEPH_CON_F_BACKOFF);
ceph_con_flag_clear(con, CEPH_CON_F_WRITE_PENDING);
ceph_con_flag_clear(con, CEPH_CON_F_WRITE_PENDING);