libceph: combine initializing and setting osd data
This ends up being a rather large patch but what it's doing is
somewhat straightforward.
Basically, this is replacing two calls with one. The first of the
two calls is initializing a struct ceph_osd_data with data (either a
page array, a page list, or a bio list); the second is setting an
osd request op so it associates that data with one of the op's
parameters. In place of those two will be a single function that
initializes the op directly.
That means we sort of fan out a set of the needed functions:
- extent ops with pages data
- extent ops with pagelist data
- extent ops with bio list data
and
- class ops with page data for receiving a response
We also have define another one, but it's only used internally:
- class ops with pagelist data for request parameters
Note that we *still* haven't gotten rid of the osd request's
r_data_in and r_data_out fields. All the osd ops refer to them for
their data. For now, these data fields are pointers assigned to the
appropriate r_data_* field when these new functions are called.
Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index db29783..6f7a52c 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -1592,7 +1592,6 @@
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 @@
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 @@
{
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 @@
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, inbound_size,
+ osd_req_op_cls_response_data_pages(obj_request->osd_req, 0,
+ obj_request->pages, inbound_size,
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 @@
{
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 @@
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);