diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index ecfb738..90198a4 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -1721,8 +1721,8 @@
 	msg->front.iov_len = p - msg->front.iov_base;
 	msg->hdr.front_len = cpu_to_le32(msg->front.iov_len);
 
-	msg->pages = req->r_pages;
-	msg->page_count = req->r_num_pages;
+	ceph_msg_data_set_pages(msg, req->r_pages, req->r_num_pages, 0);
+
 	msg->hdr.data_len = cpu_to_le32(req->r_data_len);
 	msg->hdr.data_off = cpu_to_le16(0);