tree 9e1a3f6c63abe5ceb130b93699fb0d7df43ec0ec
parent 50f6417317f9e327ed76abaf34512370f8376245
author Tianjie Xu <xunchang@google.com> 1464712189 -0700
committer Tianjie Xu <xunchang@google.com> 1464981170 -0700

Call ioctl before each write on retry

If the update is a retry, ioctl(BLKDISCARD) the destination blocks before
writing to these blocks.

Bug: 28990135
Change-Id: I1e703808e68ebb1292cd66afd76be8fd6946ee59