This series of patches arranges for each op in an osd request
to define its own incoming and outgoing data. Doing so allows
a single request to contain muliple ops which provide outgoing
data, and even allows a single op to supply more than one item
of data.
A bunch of the patches here are fairly trivial cleanups, done
as I was figuring out how to get things done. But in the end
the changes involved are significant so I tried to do them
in methodical steps.
These patches (and the one I just posted) are available in the
branch "review/wip-3761-1" in the ceph-client git repository.
-Alex
[PATCH 01/20] rbd: define inbound data size for method ops
Whoops, this one's not directly related to the rest, I
intended to post this one by itself.
[PATCH 02/20] libceph: compute incoming bytes once
[PATCH 03/20] libceph: define osd data initialization helpers
[PATCH 04/20] libceph: define a few more helpers
[PATCH 05/20] libceph: define ceph_osd_data_length()
[PATCH 06/20] libceph: a few more osd data cleanups
Simple cleanups, and code encapsulation.
[PATCH 07/20] rbd: define rbd_osd_req_format_op()
[PATCH 08/20] libceph: keep source rather than message osd op array
Store the source op array in the osd request structure.
[PATCH 09/20] libceph: rename data out field in osd request op
[PATCH 10/20] libceph: add data pointers in osd op structures
[PATCH 11/20] libceph: specify osd op by index in request
Start defining op data in the op structure itself.
[PATCH 12/20] rbd: don't set data in rbd_osd_req_format_op()
[PATCH 13/20] rbd: separate initialization of osd data
[PATCH 14/20] rbd: rearrange some code for consistency
Changes to rbd so it doesn't assume single op per request.
[PATCH 15/20] libceph: format class info at init time
Don't wait until formatting the op to lay out the request
information (class, method, and data). Define a new data
item in the CALL op structure to represent this.
[PATCH 16/20] libceph: move ceph_osdc_build_request()
[PATCH 17/20] libceph: set message data when building osd request
[PATCH 18/20] libceph: combine initializing and setting osd data
[PATCH 19/20] libceph: set the data pointers when encoding ops
[PATCH 20/20] libceph: kill off osd request r_data_in and r_data_out
These last five (four really) finally make the switch over
to using data item descriptions present in the ops to
dictate what's used in osd request and response messages.
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