I'm about to post another set of patches. As usual I've tried to group them logically, and in this case there are several single patches. This series continues moving the messenger toward supporting multiple chunks of data in a single message. We need this to support osd client requests which hold multiple osd operations, having one (or even more than one) separate pieces of data associated with each. That in turn is needed to support rbd layering. Most of this process has been whittling away at the various ways the messenger represents its data. There were at one time four distinct ways of representing it, and it was not clear which were independent or how they interacted. The logic for handling incoming and outgoing messages was a little complicated by the presence of these different ways of representing things. We now have a unified "ceph_msg_data_item" structure that represents an abstract chunk of data, in one of several possible formats. The patches change the code so data items are used for incoming data, then collapses them all into a single data item. In the process it cleans up a bunch of structures and code that have been superseded by the abstracted way of doing things. These patches are available on the "review/wip-read-data-items" branch of the ceph-client git repository. -Alex [PATCH] libceph: drop pages parameter [PATCH] libceph: no outbound zero data [PATCH] libceph: record residual bytes for all message data types [PATCH 0/4] libceph: use cursor for incoming data [PATCH 1/4] libceph: use cursor for bio reads [PATCH 2/4] libceph: kill ceph message bio_iter, bio_seg [PATCH 3/4] libceph: use cursor for inbound data pages [PATCH 4/4] libceph: get rid of read helpers [PATCH] libceph: collapse all data items into one [PATCH 0/4] libceph: get rid of ceph_msg_pos [PATCH 1/4] libceph: use cursor resid for loop condition [PATCH 2/4] libceph: kill most of ceph_msg_pos [PATCH 3/4] libceph: kill last of ceph_msg_pos [PATCH 4/4] libceph: use only ceph_msg_data_advance() [PATCH] libceph: make message data be a pointer -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
