Re: selftests/mm/rmap: verify correct RMAP handling of COW pages after fork()

On 15.10.25 10:43, Itamar Dalal wrote:

Add a new test `migrate.cow_after_fork` that verifies correct RMAP handling of Copy-On-Write (COW) pages after fork().

Before a write, the parent and child share the same PFN. After a write, the child’s PFN differs. This confirms that proper COW duplication occurred and that RMAP correctly tracks page ownership transitions during COW events.

Signed-off-by: Itamar-Dalal dalalitamar@gmail.com

Se my reply to your other patch.

For the next time

a) Use git-format-patch that will automatically add [PATCH]

b) Use versioning, e.g., [PATCH v1], explain changes since the last version under the "---" the

c) Use RESEND for resends, e.g., [PATCH v1 RESEND]

d) Use git-send-email to send mails out

The b4 tool might help as well.