Merge "Create_cow: Hash of target blocks should not be stored." into main am: a2cd2202f0 am: 8cd8ce3fc0 am: 66d0face55

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2759698

Change-Id: Ib07965db306c6ede6ace18e5a8f8a138ade1b2e1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>