linux-kernel - Re: [PATCH V3 1/2] mm: move vma_is_anonymous check within pmd_move_must

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Message-ID: <87inrqiglv.fsf@concordia.ellerman.id.au>
Date:   Mon, 14 Nov 2016 19:57:16 +1100
From:   mpe@...erman.id.au
To:     "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
        akpm@...ux-foundation.org, benh@....ibm.com,
        michael.neuling@....ibm.com, paulus@....ibm.com,
        "Kirill A . Shutemov" <kirill@...temov.name>
Cc:     linux-mm@...ck.org, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org,
        "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
Subject: Re: [PATCH V3 1/2] mm: move vma_is_anonymous check within pmd_move_must_withdraw

"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com> writes:

> Architectures like ppc64 want to use page table deposit/withraw
> even with huge pmd dax entries. Allow arch to override the
> vma_is_anonymous check by moving that to pmd_move_must_withdraw
> function
>
> Acked-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@...ux.vnet.ibm.com>
> ---
>  arch/powerpc/include/asm/book3s/64/pgtable.h |  3 ++-
>  include/asm-generic/pgtable.h                | 12 ------------
>  mm/huge_memory.c                             | 18 ++++++++++++++++--
>  3 files changed, 18 insertions(+), 15 deletions(-)

Acked-by: Michael Ellerman <mpe@...erman.id.au> (powerpc)

cheers