Re: [RFC 1/3] mm: ptep_clear() page table helper

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On Wed, Nov 17, 2021 at 3:52 AM Anshuman Khandual
<anshuman.khandual@xxxxxxx> wrote:
>
>
>
> On 11/17/21 3:30 AM, Pasha Tatashin wrote:
> > diff --git a/Documentation/vm/arch_pgtable_helpers.rst b/Documentation/vm/arch_pgtable_helpers.rst
> > index 552567d863b8..fbe06ec75370 100644
> > --- a/Documentation/vm/arch_pgtable_helpers.rst
> > +++ b/Documentation/vm/arch_pgtable_helpers.rst
> > @@ -66,9 +66,11 @@ PTE Page Table Helpers
> >  +---------------------------+--------------------------------------------------+
> >  | pte_mknotpresent          | Invalidates a mapped PTE                         |
> >  +---------------------------+--------------------------------------------------+
> > -| ptep_get_and_clear        | Clears a PTE                                     |
> > +| ptep_clear                | Clears a PTE                                     |
> >  +---------------------------+--------------------------------------------------+
> > -| ptep_get_and_clear_full   | Clears a PTE                                     |
> > +| ptep_get_and_clear        | Clears and returns PTE                           |
> > ++---------------------------+--------------------------------------------------+
> > +| ptep_get_and_clear_full   | Clears and returns PTE (batched PTE unmap)       |
> >  +---------------------------+--------------------------------------------------+
> >  | ptep_test_and_clear_young | Clears young from a PTE                          |
> >  +---------------------------+--------------------------------------------------+
>
> Just curious. This does not have a corresponding change in mm/debug_vm_pgtable.c ?

You are right, I need to replace it in mm/debug_vm_pgtable.c as well.
I will do it in the next version.

Thanks,
Pasha




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