RDMA I/O engine: Fix compiler warnings

Fix 32-bit mode compiler warnings and a warning about an unused variable.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Cc: Ren Yufei <renyufei83@yahoo.com.cn>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
diff --git a/engines/rdma.c b/engines/rdma.c
index fa94865..54fd194 100644
--- a/engines/rdma.c
+++ b/engines/rdma.c
@@ -205,7 +205,7 @@
 				}
 			}
 			if (i == rd->io_u_flight_nr)
-				log_err("fio: recv wr %ld not found\n",
+				log_err("fio: recv wr %" PRId64 " not found\n",
 					wc.wr_id);
 			else {
 				/* put the last one into middle of the list */
@@ -234,7 +234,7 @@
 				}
 			}
 			if (i == rd->io_u_flight_nr)
-				log_err("fio: send wr %ld not found\n",
+				log_err("fio: send wr %" PRId64 " not found\n",
 					wc.wr_id);
 			else {
 				/* put the last one into middle of the list */
@@ -587,8 +587,10 @@
 {
 	struct rdmaio_data *rd = td->io_ops->data;
 	struct ibv_send_wr *bad_wr;
+#if 0
 	enum ibv_wc_opcode comp_opcode;
 	comp_opcode = IBV_WC_RDMA_WRITE;
+#endif
 	int i, index;
 	struct rdma_io_u_data *r_io_u_d;
 
@@ -1018,8 +1020,9 @@
 	/* soft limit */
 	if ((rl.rlim_cur != RLIM_INFINITY)
 	    && (rl.rlim_cur < td->orig_buffer_size)) {
-		log_err("fio: soft RLIMIT_MEMLOCK is: %ld\n", rl.rlim_cur);
-		log_err("fio: total block size is:    %ld\n",
+		log_err("fio: soft RLIMIT_MEMLOCK is: %" PRId64 "\n",
+			rl.rlim_cur);
+		log_err("fio: total block size is:    %zd\n",
 			td->orig_buffer_size);
 		/* try to set larger RLIMIT_MEMLOCK */
 		rl.rlim_cur = rl.rlim_max;