On Wed, May 08, 2013 at 06:05:26PM -0400, Mike Snitzer wrote: > I'll defer to Joe on this but I think sync_metadata() is pretty heavy to > be doing every 'dmsetup info'. BTW, with just dm_cache_commit() the > superblock fields aren't stale; only the on-disk hints are. Agreed, the hints are v. expensive to write.