ceph/ceph — pull request #2331 by jcsp (2014-08-26 16:45:04+00:00)
Title: mds: fix FP error in ROUND_UP_TO

Explicitly handle case where denominator is 0, instead of
passing into ROUND_UP_TO.

Regression from 9449520b121fc6ce0c64948386d4ff77f46f4f5f

Signed-off-by: John Spray