Merge "Add CowOperationV2" into main am: a10bfe1d13 am: 445d13f73f am: 3820d87715 am: 16dfc062fa

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

Change-Id: I2d7c34988c4ac296513ffabc464a0ca8f23c452e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>