Re: [PATCH v3 2/2] mm: disable CONFIG_PER_VMA_LOCK until its fixed

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On Wed, Jul 5, 2023 at 5:30 PM Suren Baghdasaryan <surenb@xxxxxxxxxx> wrote:
>
> On Wed, Jul 5, 2023 at 5:24 PM Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote:
> >
> > On Wed, 5 Jul 2023 13:33:26 -0700 Suren Baghdasaryan <surenb@xxxxxxxxxx> wrote:
> >
> > > I was hoping we could re-enable VMA locks in 6.4 once we get more
> > > confirmations that the problem is gone. Is that not possible once the
> > > BROKEN dependency is merged?
> >
> > I think "no".  By doing this we're effectively backporting a minor
> > performance optimization, which isn't a thing we'd normally do.
>
> In that case, maybe for 6.4 we send the fix and only disable it by
> default without marking BROKEN? That way we still have a way to enable
> it if desired?

I'm preparing the next version with Liam's corrections. If the above
option I suggested is acceptable I can send a modified second patch
which would not have BROKEN dependency.

>
> >




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