dm cache metadata: return bool from __superblock_all_zeroes

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Joe Thornber 2013-10-24 14:10:28 -04:00 • committed by Mike Snitzer
commit dd8b0c2096