linux-kernel - Re: [PATCH v4 5/7] mm: replace vma->vm_flags indirect modification in ksm

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Date:   Fri, 27 Jan 2023 09:45:23 +1100
From:   Michael Ellerman <mpe@...erman.id.au>
To:     Suren Baghdasaryan <surenb@...gle.com>, akpm@...ux-foundation.org
Cc:     michel@...pinasse.org, jglisse@...gle.com, mhocko@...e.com,
        vbabka@...e.cz, hannes@...xchg.org, mgorman@...hsingularity.net,
        dave@...olabs.net, willy@...radead.org, liam.howlett@...cle.com,
        peterz@...radead.org, ldufour@...ux.ibm.com, paulmck@...nel.org,
        mingo@...hat.com, will@...nel.org, luto@...nel.org,
        songliubraving@...com, peterx@...hat.com, david@...hat.com,
        dhowells@...hat.com, hughd@...gle.com, bigeasy@...utronix.de,
        kent.overstreet@...ux.dev, punit.agrawal@...edance.com,
        lstoakes@...il.com, peterjung1337@...il.com, rientjes@...gle.com,
        axelrasmussen@...gle.com, joelaf@...gle.com, minchan@...gle.com,
        rppt@...nel.org, jannh@...gle.com, shakeelb@...gle.com,
        tatashin@...gle.com, edumazet@...gle.com, gthelen@...gle.com,
        gurua@...gle.com, arjunroy@...gle.com, soheil@...gle.com,
        leewalsh@...gle.com, posk@...gle.com, linux-mm@...ck.org,
        linux-arm-kernel@...ts.infradead.org,
        linuxppc-dev@...ts.ozlabs.org, x86@...nel.org,
        linux-kernel@...r.kernel.org, kernel-team@...roid.com,
        surenb@...gle.com
Subject: Re: [PATCH v4 5/7] mm: replace vma->vm_flags indirect modification
 in ksm_madvise

Suren Baghdasaryan <surenb@...gle.com> writes:
> Replace indirect modifications to vma->vm_flags with calls to modifier
> functions to be able to track flag changes and to keep vma locking
> correctness.
>
> Signed-off-by: Suren Baghdasaryan <surenb@...gle.com>
> Acked-by: Michal Hocko <mhocko@...e.com>
> Acked-by: Mel Gorman <mgorman@...hsingularity.net>
> Acked-by: Mike Rapoport (IBM) <rppt@...nel.org>
> ---
>  arch/powerpc/kvm/book3s_hv_uvmem.c | 6 +++++-

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

cheers