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From:   Suren Baghdasaryan <surenb@google.com>
Date:   Tue, 31 Jan 2023 13:08:19 -0800
Message-ID: <CAJuCfpHmtkzrKx45SQQ0gXLoybtgHxHmTP5J4L74ChTqSfFA-g@mail.gmail.com>
Subject: Re: [PATCH v4 4/7] mm: replace vma->vm_flags direct modifications
 with modifier calls
To:     Andrew Morton <akpm@linux-foundation.org>
Cc:     Hyeonggon Yoo <42.hyeyoo@gmail.com>, michel@lespinasse.org,
        jglisse@google.com, mhocko@suse.com, vbabka@suse.cz,
        hannes@cmpxchg.org, mgorman@techsingularity.net, dave@stgolabs.net,
        willy@infradead.org, liam.howlett@oracle.com, peterz@infradead.org,
        ldufour@linux.ibm.com, paulmck@kernel.org, mingo@redhat.com,
        will@kernel.org, luto@kernel.org, songliubraving@fb.com,
        peterx@redhat.com, david@redhat.com, dhowells@redhat.com,
        hughd@google.com, bigeasy@linutronix.de, kent.overstreet@linux.dev,
        punit.agrawal@bytedance.com, lstoakes@gmail.com,
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        leewalsh@google.com, posk@google.com, linux-mm@kvack.org,
        linux-arm-kernel@lists.infradead.org,
        linuxppc-dev@lists.ozlabs.org, x86@kernel.org,
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        Sebastian Reichel <sebastian.reichel@collabora.com>
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On Tue, Jan 31, 2023 at 12:54 PM Andrew Morton
<akpm@linux-foundation.org> wrote:
>
> On Tue, 31 Jan 2023 10:54:22 -0800 Suren Baghdasaryan <surenb@google.com> wrote:
>
> > > > -             vma->vm_flags &= ~VM_MAYWRITE;
> > > > +             vm_flags_clear(vma, VM_MAYSHARE);
> > > >       }
> > >
> > > I think it should be:
> > >         s/VM_MAYSHARE/VM_MAYWRITE/
> >
>
> I added the fixup.  Much better than resending a seven patch series for a
> single line change.  Unless you have substantial other changes pending.

Thanks! That sounds reasonable.

I'll also need to introduce vm_flags_reset_once() to use in
replacement of WRITE_ONCE(vma->vm_flags, newflags) case. Should I send
a separate short patch for that?

>
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