mds: bump rstat version in predirty_journal_parents
mds: bump rstat version in predirty_journal_parents

When we propagate the rstat to inode in predirty_journal_parents (because
we hold the nestlock), bump the rstat version as well.  This avoids
confusing any replicas, who expect the rstat to have a new version or to
remain unchanged when the lock scatters.

Signed-off-by: Sage Weil <6dd34506bbd5e58221bbb3e4732d97c91f02277b@newdream.net>

ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph