ceph/ceph — pull request #2140 by liewegas (2014-07-23 22:08:09+00:00)
Title: os/FileJournal: Update the journal header when closing journal

When closing journal, it should check must_write_header and update
journal header if must_write_header alreay set.
It can reduce the nosense journal-replay after restarting osd.

Signed-off-by: Ma Jianpeng
Reviewed-by: Sage Weil