Re: [PATCH v2 1/2] mm/migrate: Fix read-only page got writable when recover pte

On Thu, Nov 10, 2022 at 01:28:31PM -0800, Nadav Amit wrote:

On Nov 10, 2022, at 12:31 PM, Peter Xu peterx@redhat.com wrote:

...

Ives van Hoorne from codesandbox.io reported an issue regarding possible data loss of uffd-wp when applied to memfds on heavily loaded systems. The sympton is some read page got data mismatch from the snapshot child VMs.

symptom (if you care)

Yes, but,

Other than that LGTM

this definitely matters more. :) Thanks for taking a look, Nadav.