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authorIlya Dryomov <idryomov@gmail.com>2016-05-26 01:29:52 +0300
committerIlya Dryomov <idryomov@gmail.com>2016-05-26 01:36:27 +0300
commitbb873b539154ab51893430b4ad6ba4051775276a (patch)
tree9415938962eddb3d83e89bfa00eaab803b196bb6 /drivers/block
parenta66dd38309f5d9c66ec9bc7911ff8da8cc37bb9f (diff)
downloadlinux-bb873b539154ab51893430b4ad6ba4051775276a.tar.xz
libceph: switch to calc_target(), part 2
The crux of this is getting rid of ceph_osdc_build_request(), so that MOSDOp can be encoded not before but after calc_target() calculates the actual target. Encoding now happens within ceph_osdc_start_request(). Also nuked is the accompanying bunch of pointers into the encoded buffer that was used to update fields on each send - instead, the entire front is re-encoded. If we want to support target->name_len != base->name_len in the future, there is no other way, because oid is surrounded by other fields in the encoded buffer. Encoding OSD ops and adding data items to the request message were mixed together in osd_req_encode_op(). While we want to re-encode OSD ops, we don't want to add duplicate data items to the message when resending, so all call to ceph_osdc_msg_data_add() are factored out into a new setup_request_data(). Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/rbd.c18
1 files changed, 4 insertions, 14 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index f3ea927f93de..0e598916e048 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -1896,27 +1896,17 @@ static void rbd_osd_req_format_read(struct rbd_obj_request *obj_request)
{
struct rbd_img_request *img_request = obj_request->img_request;
struct ceph_osd_request *osd_req = obj_request->osd_req;
- u64 snap_id;
-
- rbd_assert(osd_req != NULL);
- snap_id = img_request ? img_request->snap_id : CEPH_NOSNAP;
- ceph_osdc_build_request(osd_req, obj_request->offset,
- NULL, snap_id, NULL);
+ if (img_request)
+ osd_req->r_snapid = img_request->snap_id;
}
static void rbd_osd_req_format_write(struct rbd_obj_request *obj_request)
{
- struct rbd_img_request *img_request = obj_request->img_request;
struct ceph_osd_request *osd_req = obj_request->osd_req;
- struct ceph_snap_context *snapc;
- struct timespec mtime = CURRENT_TIME;
-
- rbd_assert(osd_req != NULL);
- snapc = img_request ? img_request->snapc : NULL;
- ceph_osdc_build_request(osd_req, obj_request->offset,
- snapc, CEPH_NOSNAP, &mtime);
+ osd_req->r_mtime = CURRENT_TIME;
+ osd_req->r_data_offset = obj_request->offset;
}
/*