tree 7b1902c2b9c5980b7a18ea8f7e7a4cc633911804
parent d132cc6d9e92424bb9d4fd35f5bd0e55d583f4be
author Heinz Mauelshagen <heinzm@redhat.com> 1395947650 -0400
committer Mike Snitzer <snitzer@redhat.com> 1395953783 -0400

dm cache: remove remainder of distinct discard block size

Discard block size not being equal to cache block size causes data
corruption by erroneously avoiding migrations in issue_copy() because
the discard state is being cleared for a group of cache blocks when it
should not.

Completely remove all code that enabled a distinction between the
cache block size and discard block size.

Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>