dm cache metadata: use bitset cursor api to load discard bitset

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Joe Thornber 2016-10-03 14:16:20 -04:00 • committed by Mike Snitzer
commit ae4a46a1f6