Re: [PATCH 6.18.y v1 0/9] mm: backport sticky VMA flags and soft-dirty fix

Andrei Vagin
2026-04-24T21:55:33Z

On Fri, Apr 24, 2026 at 2:13 PM Ahmed Elaidy <elaidya225@gmail.com> wrote:
>
> This series backports the sticky VMA flags infrastructure and the
> VM_SOFTDIRTY-on-merge fix to linux-6.18.y.
>
> Motivation: CRIU incremental dump/restore can hit a missing-parent-pagemap
> failure when VM_SOFTDIRTY is lost during VMA merge operations.
>
> Patch 8 is the target fix:
> mm: propagate VM_SOFTDIRTY on merge

Have you tried fixing only the VM_SOFTDIRTY propagation issue without porting
the entire series?

I think this fix will be small, reducing the chance of breaking something else.

Thanks,
Andrei