tree d8e2db6df2b5f0f3043f70442cd60751af423489
parent e6f6097a7d59ae8443d7c7e5e39ecdc43b77f3ab
author Sami Tolvanen <samitolvanen@google.com> 1433952425 +0100
committer Sami Tolvanen <samitolvanen@google.com> 1433952588 +0100

Zero blocks before BLKDISCARD

Due to observed BLKDISCARD flakiness, overwrite blocks that we want
to discard with zeros first to avoid later issues with dm-verity if
BLKDISCARD is not successful.

Bug: 20614277
Bug: 20881595
Change-Id: I4f6f2db39db990879ff10468c9db41606497bd6f