diff --git a/net/rds/ib_send.c b/net/rds/ib_send.c
index 63981cd1..95f1524 100644
--- a/net/rds/ib_send.c
+++ b/net/rds/ib_send.c
@@ -76,7 +76,7 @@
 	rdsdebug("ic %p send %p rm %p\n", ic, send, rm);
 
 	ib_dma_unmap_sg(ic->i_cm_id->device,
-			rm->data.m_sg, rm->data.m_nents,
+			rm->data.op_sg, rm->data.op_nents,
 			DMA_TO_DEVICE);
 
 	if (rm->rdma.op_active) {
@@ -513,20 +513,20 @@
 
 	/* map the message the first time we see it */
 	if (!ic->i_rm) {
-		if (rm->data.m_nents) {
-			rm->data.m_count = ib_dma_map_sg(dev,
-							    rm->data.m_sg,
-							    rm->data.m_nents,
-							    DMA_TO_DEVICE);
-			rdsdebug("ic %p mapping rm %p: %d\n", ic, rm, rm->data.m_count);
-			if (rm->data.m_count == 0) {
+		if (rm->data.op_nents) {
+			rm->data.op_count = ib_dma_map_sg(dev,
+							  rm->data.op_sg,
+							  rm->data.op_nents,
+							  DMA_TO_DEVICE);
+			rdsdebug("ic %p mapping rm %p: %d\n", ic, rm, rm->data.op_count);
+			if (rm->data.op_count == 0) {
 				rds_ib_stats_inc(s_ib_tx_sg_mapping_failure);
 				rds_ib_ring_unalloc(&ic->i_send_ring, work_alloc);
 				ret = -ENOMEM; /* XXX ? */
 				goto out;
 			}
 		} else {
-			rm->data.m_count = 0;
+			rm->data.op_count = 0;
 		}
 
 		rds_message_addref(rm);
@@ -583,7 +583,7 @@
 	send = &ic->i_sends[pos];
 	first = send;
 	prev = NULL;
-	scat = &rm->data.m_sg[sg];
+	scat = &rm->data.op_sg[sg];
 	i = 0;
 	do {
 		unsigned int len = 0;
@@ -604,7 +604,7 @@
 
 		/* Set up the data, if present */
 		if (i < work_alloc
-		    && scat != &rm->data.m_sg[rm->data.m_count]) {
+		    && scat != &rm->data.op_sg[rm->data.op_count]) {
 			len = min(RDS_FRAG_SIZE, ib_sg_dma_len(dev, scat) - off);
 			send->s_wr.num_sge = 2;
 
@@ -649,7 +649,7 @@
 		i++;
 
 	} while (i < work_alloc
-		 && scat != &rm->data.m_sg[rm->data.m_count]);
+		 && scat != &rm->data.op_sg[rm->data.op_count]);
 
 	/* Account the RDS header in the number of bytes we sent, but just once.
 	 * The caller has no concept of fragmentation. */
@@ -657,7 +657,7 @@
 		bytes_sent += sizeof(struct rds_header);
 
 	/* if we finished the message then send completion owns it */
-	if (scat == &rm->data.m_sg[rm->data.m_count]) {
+	if (scat == &rm->data.op_sg[rm->data.op_count]) {
 		prev->s_rm = ic->i_rm;
 		prev->s_wr.send_flags |= IB_SEND_SOLICITED;
 		ic->i_rm = NULL;
diff --git a/net/rds/iw_send.c b/net/rds/iw_send.c
index 05ebf16..6280ea0 100644
--- a/net/rds/iw_send.c
+++ b/net/rds/iw_send.c
@@ -82,7 +82,7 @@
 	rdsdebug("ic %p send %p rm %p\n", ic, send, rm);
 
 	ib_dma_unmap_sg(ic->i_cm_id->device,
-		     rm->data.m_sg, rm->data.m_nents,
+		     rm->data.op_sg, rm->data.op_nents,
 		     DMA_TO_DEVICE);
 
 	if (rm->rdma.op_active) {
@@ -562,20 +562,20 @@
 				rm->m_inc.i_hdr.h_flags,
 				be32_to_cpu(rm->m_inc.i_hdr.h_len));
 		   */
-		if (rm->data.m_nents) {
-			rm->data.m_count = ib_dma_map_sg(dev,
-						    rm->data.m_sg,
-						    rm->data.m_nents,
-						    DMA_TO_DEVICE);
-			rdsdebug("ic %p mapping rm %p: %d\n", ic, rm, rm->data.m_count);
-			if (rm->data.m_count == 0) {
+		if (rm->data.op_nents) {
+			rm->data.op_count = ib_dma_map_sg(dev,
+							  rm->data.op_sg,
+							  rm->data.op_nents,
+							  DMA_TO_DEVICE);
+			rdsdebug("ic %p mapping rm %p: %d\n", ic, rm, rm->data.op_count);
+			if (rm->data.op_count == 0) {
 				rds_iw_stats_inc(s_iw_tx_sg_mapping_failure);
 				rds_iw_ring_unalloc(&ic->i_send_ring, work_alloc);
 				ret = -ENOMEM; /* XXX ? */
 				goto out;
 			}
 		} else {
-			rm->data.m_count = 0;
+			rm->data.op_count = 0;
 		}
 
 		ic->i_unsignaled_wrs = rds_iw_sysctl_max_unsig_wrs;
@@ -622,7 +622,7 @@
 	send = &ic->i_sends[pos];
 	first = send;
 	prev = NULL;
-	scat = &rm->data.m_sg[sg];
+	scat = &rm->data.op_sg[sg];
 	sent = 0;
 	i = 0;
 
@@ -651,7 +651,7 @@
 	}
 
 	/* if there's data reference it with a chain of work reqs */
-	for (; i < work_alloc && scat != &rm->data.m_sg[rm->data.m_count]; i++) {
+	for (; i < work_alloc && scat != &rm->data.op_sg[rm->data.op_count]; i++) {
 		unsigned int len;
 
 		send = &ic->i_sends[pos];
@@ -729,7 +729,7 @@
 		sent += sizeof(struct rds_header);
 
 	/* if we finished the message then send completion owns it */
-	if (scat == &rm->data.m_sg[rm->data.m_count]) {
+	if (scat == &rm->data.op_sg[rm->data.op_count]) {
 		prev->s_rm = ic->i_rm;
 		prev->s_wr.send_flags |= IB_SEND_SIGNALED | IB_SEND_SOLICITED;
 		ic->i_rm = NULL;
diff --git a/net/rds/message.c b/net/rds/message.c
index bca7eda..4bd9504 100644
--- a/net/rds/message.c
+++ b/net/rds/message.c
@@ -62,12 +62,12 @@
 	if (unlikely(test_bit(RDS_MSG_PAGEVEC, &rm->m_flags)))
 		return;
 
-	for (i = 0; i < rm->data.m_nents; i++) {
-		rdsdebug("putting data page %p\n", (void *)sg_page(&rm->data.m_sg[i]));
+	for (i = 0; i < rm->data.op_nents; i++) {
+		rdsdebug("putting data page %p\n", (void *)sg_page(&rm->data.op_sg[i]));
 		/* XXX will have to put_page for page refs */
-		__free_page(sg_page(&rm->data.m_sg[i]));
+		__free_page(sg_page(&rm->data.op_sg[i]));
 	}
-	rm->data.m_nents = 0;
+	rm->data.op_nents = 0;
 
 	if (rm->rdma.op_active)
 		rds_rdma_free_op(&rm->rdma);
@@ -261,11 +261,11 @@
 
 	set_bit(RDS_MSG_PAGEVEC, &rm->m_flags);
 	rm->m_inc.i_hdr.h_len = cpu_to_be32(total_len);
-	rm->data.m_nents = ceil(total_len, PAGE_SIZE);
-	rm->data.m_sg = rds_message_alloc_sgs(rm, num_sgs);
+	rm->data.op_nents = ceil(total_len, PAGE_SIZE);
+	rm->data.op_sg = rds_message_alloc_sgs(rm, num_sgs);
 
-	for (i = 0; i < rm->data.m_nents; ++i) {
-		sg_set_page(&rm->data.m_sg[i],
+	for (i = 0; i < rm->data.op_nents; ++i) {
+		sg_set_page(&rm->data.op_sg[i],
 				virt_to_page(page_addrs[i]),
 				PAGE_SIZE, 0);
 	}
@@ -288,7 +288,7 @@
 	/*
 	 * now allocate and copy in the data payload.
 	 */
-	sg = rm->data.m_sg;
+	sg = rm->data.op_sg;
 	iov = first_iov;
 	iov_off = 0;
 	sg_off = 0; /* Dear gcc, sg->page will be null from kzalloc. */
@@ -299,7 +299,7 @@
 						       GFP_HIGHUSER);
 			if (ret)
 				goto out;
-			rm->data.m_nents++;
+			rm->data.op_nents++;
 			sg_off = 0;
 		}
 
@@ -354,7 +354,7 @@
 
 	iov = first_iov;
 	iov_off = 0;
-	sg = rm->data.m_sg;
+	sg = rm->data.op_sg;
 	vec_off = 0;
 	copied = 0;
 
diff --git a/net/rds/rds.h b/net/rds/rds.h
index 76eeb59..d702849 100644
--- a/net/rds/rds.h
+++ b/net/rds/rds.h
@@ -339,9 +339,9 @@
 		} rdma;
 		struct rm_data_op {
 			unsigned int		op_active:1;
-			unsigned int		m_nents;
-			unsigned int		m_count;
-			struct scatterlist	*m_sg;
+			unsigned int		op_nents;
+			unsigned int		op_count;
+			struct scatterlist	*op_sg;
 		} data;
 	};
 	unsigned int		m_used_sgs;
diff --git a/net/rds/send.c b/net/rds/send.c
index 08df279..d60d313 100644
--- a/net/rds/send.c
+++ b/net/rds/send.c
@@ -166,7 +166,7 @@
 		rm = conn->c_xmit_rm;
 		if (rm &&
 		    conn->c_xmit_hdr_off == sizeof(struct rds_header) &&
-		    conn->c_xmit_sg == rm->data.m_nents) {
+		    conn->c_xmit_sg == rm->data.op_nents) {
 			conn->c_xmit_rm = NULL;
 			conn->c_xmit_sg = 0;
 			conn->c_xmit_hdr_off = 0;
@@ -296,7 +296,7 @@
 
 		if (rm->data.op_active
 		    && (conn->c_xmit_hdr_off < sizeof(struct rds_header) ||
-			conn->c_xmit_sg < rm->data.m_nents)) {
+			conn->c_xmit_sg < rm->data.op_nents)) {
 			ret = conn->c_trans->xmit(conn, rm,
 						  conn->c_xmit_hdr_off,
 						  conn->c_xmit_sg,
@@ -312,7 +312,7 @@
 				ret -= tmp;
 			}
 
-			sg = &rm->data.m_sg[conn->c_xmit_sg];
+			sg = &rm->data.op_sg[conn->c_xmit_sg];
 			while (ret) {
 				tmp = min_t(int, ret, sg->length -
 						      conn->c_xmit_data_off);
@@ -323,7 +323,7 @@
 					sg++;
 					conn->c_xmit_sg++;
 					BUG_ON(ret != 0 &&
-					       conn->c_xmit_sg == rm->data.m_nents);
+					       conn->c_xmit_sg == rm->data.op_nents);
 				}
 			}
 		}
@@ -959,7 +959,7 @@
 		goto out;
 	}
 
-	rm->data.m_sg = rds_message_alloc_sgs(rm, ceil(payload_len, PAGE_SIZE));
+	rm->data.op_sg = rds_message_alloc_sgs(rm, ceil(payload_len, PAGE_SIZE));
 	/* XXX fix this to not allocate memory */
 	ret = rds_message_copy_from_user(rm, msg->msg_iov, payload_len);
 	if (ret)
diff --git a/net/rds/tcp_send.c b/net/rds/tcp_send.c
index d63aa35..53c1de5 100644
--- a/net/rds/tcp_send.c
+++ b/net/rds/tcp_send.c
@@ -166,21 +166,21 @@
 			goto out;
 	}
 
-	while (sg < rm->data.m_nents) {
+	while (sg < rm->data.op_nents) {
 		ret = tc->t_sock->ops->sendpage(tc->t_sock,
-						sg_page(&rm->data.m_sg[sg]),
-						rm->data.m_sg[sg].offset + off,
-						rm->data.m_sg[sg].length - off,
+						sg_page(&rm->data.op_sg[sg]),
+						rm->data.op_sg[sg].offset + off,
+						rm->data.op_sg[sg].length - off,
 						MSG_DONTWAIT|MSG_NOSIGNAL);
-		rdsdebug("tcp sendpage %p:%u:%u ret %d\n", (void *)sg_page(&rm->data.m_sg[sg]),
-			 rm->data.m_sg[sg].offset + off, rm->data.m_sg[sg].length - off,
+		rdsdebug("tcp sendpage %p:%u:%u ret %d\n", (void *)sg_page(&rm->data.op_sg[sg]),
+			 rm->data.op_sg[sg].offset + off, rm->data.op_sg[sg].length - off,
 			 ret);
 		if (ret <= 0)
 			break;
 
 		off += ret;
 		done += ret;
-		if (off == rm->data.m_sg[sg].length) {
+		if (off == rm->data.op_sg[sg].length) {
 			off = 0;
 			sg++;
 		}