Re: LTP regressions due to 6dc296e7df4c ("mm: make sure all file VMAs have ->vm_ops set")

From: Kirill A. Shutemov
Date: Thu Sep 17 2015 - 11:37:41 EST


On Wed, Sep 16, 2015 at 02:28:18PM -0700, Andrew Morton wrote:
> On Tue, 15 Sep 2015 16:42:16 +0300 "Kirill A. Shutemov" <kirill@xxxxxxxxxxxxx> wrote:
>
> > I would rather like to see consolidated fault path between file and anon
> > with ->vm_ops set for both. So vma_is_anonymous() will be trivial
> > vma->vm_ops == anon_vm_ops.
>
> People are noticing: https://bugzilla.kernel.org/show_bug.cgi?id=104691
>
> How about I send Linus a revert of 6dc296e7df4c while we work out what
> to do?

I think it's the best step for now. Although, I'm not sure when I will get
time on reworking fault path :-/

--
Kirill A. Shutemov
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