Re: fs/proc/task_mmu: Implement IOCTL for efficient page table scanning

[Andrei Vagin]

On Thu, Jul 20, 2023 at 9:27 PM Muhammad Usama Anjum
<usama.anjum@xxxxxxxxxxxxx> wrote:
>
> Thank you Michał.
>
> On 7/21/23 12:28 AM, Michał Mirosław wrote:
> >   b. rename match "flags" to 'page categories' everywhere - this makes
> >       it easier to differentiate the ioctl()s categorisation of pages
> >       from struct page flags;
> >   c. change {required + excluded} to {inverted + required}. This was
> >       rejected before, but I'd like to illustrate the difference.
> >       Old interface can be translated to the new by:
> >               categories_inverted = excluded_mask
> >               categories_mask = required_mask | excluded_mask
> >               categories_anyof_mask = anyof_mask
> >       The new way allows filtering by: A & (B | !C)
> >               categories_inverted = C
> >               categories_mask = A
> >               categories_anyof_mask = B | C
> Andrei and Danylo,
>
> Are you okay with these masks? It were you two who had proposed these.

I am okay.

>
>
> --
> BR,
> Muhammad Usama Anjum