ceph/ceph — pull request #2587 by cchengleo (2014-09-27 19:23:48+00:00)
Title: Wip copy on read

An improved copy-on-read implementation based on the pull request (https://github.com/ceph/ceph/pull/2158) by Min Chen , Li Wang and Yunchuan Wen .

The bufferlist holding the entire object from parent is allocated separately.

Also provided a unit test for verifying the implementation.