Merge "Add CowOperationV2" into main am: a10bfe1d13

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

Change-Id: Ib2c7b4cdc556db7e594c2a1df8b3117ec986471b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>