Merge "Add CowOperationV2" into main am: a10bfe1d13 am: 445d13f73f am: 3820d87715

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2736100

Change-Id: I2fd7c0563f6a82a829b336631865d21c09a3eca8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>