diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 3e8e6d5..7db244e 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -1592,7 +1592,6 @@ static int rbd_img_request_fill_bio(struct
rbd_img_request *img_request,
 	rbd_assert(resid > 0);
 	while (resid) {
 		struct ceph_osd_request *osd_req;
-		struct ceph_osd_data *osd_data;
 		const char *object_name;
 		unsigned int clone_size;
 		u64 offset;
@@ -1625,13 +1624,10 @@ static int rbd_img_request_fill_bio(struct
rbd_img_request *img_request,
 		obj_request->osd_req = osd_req;
 		obj_request->callback = rbd_img_obj_callback;

-		osd_data = write_request ? &osd_req->r_data_out
-					 : &osd_req->r_data_in;
 		osd_req_op_extent_init(osd_req, 0, opcode, offset, length,
 						0, 0);
-		ceph_osd_data_bio_init(osd_data, obj_request->bio_list,
-					obj_request->length);
-		osd_req_op_extent_osd_data(osd_req, 0, osd_data);
+		osd_req_op_extent_osd_data_bio(osd_req, 0, write_request,
+				obj_request->bio_list, obj_request->length);
 		rbd_osd_req_format(obj_request, write_request);

 		rbd_img_obj_request_add(img_request, obj_request);
@@ -1821,7 +1817,6 @@ static int rbd_obj_method_sync(struct rbd_device
*rbd_dev,
 {
 	struct ceph_osd_client *osdc = &rbd_dev->rbd_client->client->osdc;
 	struct rbd_obj_request *obj_request;
-	struct ceph_osd_data *osd_data;
 	struct page **pages;
 	u32 page_count;
 	int ret;
@@ -1851,13 +1846,12 @@ static int rbd_obj_method_sync(struct rbd_device
*rbd_dev,
 	if (!obj_request->osd_req)
 		goto out;

-	osd_data = &obj_request->osd_req->r_data_in;
 	osd_req_op_cls_init(obj_request->osd_req, 0, CEPH_OSD_OP_CALL,
 					class_name, method_name,
 					outbound, outbound_size);
-	ceph_osd_data_pages_init(osd_data, obj_request->pages, 0, 0,
+	osd_req_op_cls_response_data_pages(obj_request->osd_req, 0,
+					obj_request->pages, 0, 0,
 					false, false);
-	osd_req_op_cls_response_data(obj_request->osd_req, 0, osd_data);
 	rbd_osd_req_format(obj_request, false);

 	ret = rbd_obj_request_submit(osdc, obj_request);
@@ -2037,7 +2031,6 @@ static int rbd_obj_read_sync(struct rbd_device
*rbd_dev,
 {
 	struct ceph_osd_client *osdc = &rbd_dev->rbd_client->client->osdc;
 	struct rbd_obj_request *obj_request;
-	struct ceph_osd_data *osd_data;
 	struct page **pages = NULL;
 	u32 page_count;
 	size_t size;
@@ -2061,14 +2054,13 @@ static int rbd_obj_read_sync(struct rbd_device
*rbd_dev,
 	if (!obj_request->osd_req)
 		goto out;

-	osd_data = &obj_request->osd_req->r_data_in;
 	osd_req_op_extent_init(obj_request->osd_req, 0, CEPH_OSD_OP_READ,
 					offset, length, 0, 0);
-	ceph_osd_data_pages_init(osd_data, obj_request->pages,
+	osd_req_op_extent_osd_data_pages(obj_request->osd_req, 0, false,
+					obj_request->pages,
 					obj_request->length,
 					obj_request->offset & ~PAGE_MASK,
 					false, false);
-	osd_req_op_extent_osd_data(obj_request->osd_req, 0, osd_data);
 	rbd_osd_req_format(obj_request, false);

 	ret = rbd_obj_request_submit(osdc, obj_request);
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index dd5d263..068d2c8 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -245,7 +245,7 @@ static void finish_read(struct ceph_osd_request
*req, struct ceph_msg *msg)
 	dout("finish_read %p req %p rc %d bytes %d\n", inode, req, rc, bytes);

 	/* unlock all pages, zeroing any data we didn't read */
-	osd_data = &req->r_data_in;
+	osd_data = osd_req_op_extent_osd_data(req, 0, false);
 	BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGES);
 	num_pages = calc_pages_for((u64)osd_data->alignment,
 					(u64)osd_data->length);
@@ -343,8 +343,7 @@ static int start_read(struct inode *inode, struct
list_head *page_list, int max)
 		}
 		pages[i] = page;
 	}
-	BUG_ON(req->r_ops[0].extent.osd_data != &req->r_data_in);
-	ceph_osd_data_pages_init(req->r_ops[0].extent.osd_data, pages, len, 0,
+	osd_req_op_extent_osd_data_pages(req, 0, false, pages, len, 0,
 					false, false);
 	req->r_callback = finish_read;
 	req->r_inode = inode;
@@ -572,7 +571,7 @@ static void writepages_finish(struct
ceph_osd_request *req,
 	long writeback_stat;
 	unsigned issued = ceph_caps_issued(ci);

-	osd_data = &req->r_data_out;
+	osd_data = osd_req_op_extent_osd_data(req, 0, true);
 	BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGES);
 	num_pages = calc_pages_for((u64)osd_data->alignment,
 					(u64)osd_data->length);
@@ -917,9 +916,8 @@ get_more_pages:
 		dout("writepages got %d pages at %llu~%llu\n",
 		     locked_pages, offset, len);

-		BUG_ON(req->r_ops[0].extent.osd_data != &req->r_data_out);
-		ceph_osd_data_pages_init(req->r_ops[0].extent.osd_data, pages,
-						len, 0, !!pool, false);
+		osd_req_op_extent_osd_data_pages(req, 0, true, pages, len, 0,
+							!!pool, false);

 		pages = NULL;	/* request message now owns the pages array */
 		pool = NULL;
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 66d0938..b7e6caa 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -574,8 +574,7 @@ more:
 			own_pages = true;
 		}
 	}
-	BUG_ON(req->r_ops[0].extent.osd_data != &req->r_data_out);
-	ceph_osd_data_pages_init(req->r_ops[0].extent.osd_data, pages, len,
+	osd_req_op_extent_osd_data_pages(req, 0, true, pages, len,
 					page_align, false, own_pages);

 	/* BUG_ON(vino.snap != CEPH_NOSNAP); */
diff --git a/include/linux/ceph/osd_client.h
b/include/linux/ceph/osd_client.h
index 71c4157..f8a00b4 100644
--- a/include/linux/ceph/osd_client.h
+++ b/include/linux/ceph/osd_client.h
@@ -240,17 +240,39 @@ extern void osd_req_op_extent_init(struct
ceph_osd_request *osd_req,
 					u64 truncate_size, u32 truncate_seq);
 extern void osd_req_op_extent_update(struct ceph_osd_request *osd_req,
 					unsigned int which, u64 length);
-extern void osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req,
+
+extern struct ceph_osd_data *osd_req_op_extent_osd_data(
+					struct ceph_osd_request *osd_req,
+					unsigned int which, bool write_request);
+extern struct ceph_osd_data *osd_req_op_cls_response_data(
+					struct ceph_osd_request *osd_req,
+					unsigned int which);
+
+extern void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *,
+					unsigned int which, bool write_request,
+					struct page **pages, u64 length,
+					u32 alignment, bool pages_from_pool,
+					bool own_pages);
+extern void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *,
+					unsigned int which, bool write_request,
+					struct ceph_pagelist *pagelist);
+#ifdef CONFIG_BLOCK
+extern void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *,
+					unsigned int which, bool write_request,
+					struct bio *bio, size_t bio_length);
+#endif /* CONFIG_BLOCK */
+
+extern void osd_req_op_cls_response_data_pages(struct ceph_osd_request *,
 					unsigned int which,
-					struct ceph_osd_data *osd_data);
+					struct page **pages, u64 length,
+					u32 alignment, bool pages_from_pool,
+					bool own_pages);
+
 extern void osd_req_op_cls_init(struct ceph_osd_request *osd_req,
 					unsigned int which, u16 opcode,
 					const char *class, const char *method,
 					const void *request_data,
 					size_t request_data_size);
-extern void osd_req_op_cls_response_data(struct ceph_osd_request *osd_req,
-					unsigned int which,
-					struct ceph_osd_data *response_data);
 extern void osd_req_op_watch_init(struct ceph_osd_request *osd_req,
 					unsigned int which, u16 opcode,
 					u64 cookie, u64 version, int flag);
@@ -290,17 +312,6 @@ static inline void ceph_osdc_put_request(struct
ceph_osd_request *req)
 	kref_put(&req->r_kref, ceph_osdc_release_request);
 }

-extern void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data,
-				     struct page **pages, u64 length,
-				     u32 alignment, bool pages_from_pool,
-				     bool own_pages);
-extern void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data,
-					struct ceph_pagelist *pagelist);
-#ifdef CONFIG_BLOCK
-extern void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data,
-				   struct bio *bio, size_t bio_length);
-#endif /* CONFIG_BLOCK */
-
 extern int ceph_osdc_start_request(struct ceph_osd_client *osdc,
 				   struct ceph_osd_request *req,
 				   bool nofail);
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index 40466ab..86cb524 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -1,3 +1,4 @@
+
 #include <linux/ceph/ceph_debug.h>

 #include <linux/module.h>
@@ -81,11 +82,11 @@ static int calc_layout(struct ceph_file_layout
*layout, u64 off, u64 *plen,

 static void ceph_osd_data_init(struct ceph_osd_data *osd_data)
 {
-	memset(osd_data, 0, sizeof *osd_data);
+	memset(osd_data, 0, sizeof (*osd_data));
 	osd_data->type = CEPH_OSD_DATA_TYPE_NONE;
 }

-void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data,
+static void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data,
 			struct page **pages, u64 length, u32 alignment,
 			bool pages_from_pool, bool own_pages)
