ceph/ceph — pull request #2501 by majianpeng (2014-09-16 02:44:48+00:00)
Title: FileJournal: Refactor function align_bl().

rebuild_page_aligned() dont' change the size of bufferlist.
We first check the pos and length. Then only for bufferlist don't page
aliged, we call rebuild_page_aligned.

Signed-off-by: Ma Jianpeng