Re: [PATCH v4 0/9] introduce VM_MAYBE_GUARD and make it sticky

[Andrew Morton]

On Tue, 18 Nov 2025 10:17:42 +0000 Lorenzo Stoakes <lorenzo.stoakes@xxxxxxxxxx> wrote:

> Currently, guard regions are not visible to users except through
> /proc/$pid/pagemap, with no explicit visibility at the VMA level.
> 
> This makes the feature less useful, as it isn't entirely apparent which
> VMAs may have these entries present, especially when performing actions
> which walk through memory regions such as those performed by CRIU.
> 
> This series addresses this issue by introducing the VM_MAYBE_GUARD flag
> which fulfils this role, updating the smaps logic to display an entry for
> these.

I updated mm-unstable to this version.