linux-kernel - Re: LTP regressions due to 6dc296e7df4c ("mm: make sure all file VMAs have ->vm

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Message-ID: <20150917153733.GA31823@node.dhcp.inet.fi>
Date:	Thu, 17 Sep 2015 18:37:34 +0300
From:	"Kirill A. Shutemov" <kirill@...temov.name>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Oleg Nesterov <oleg@...hat.com>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Will Deacon <will.deacon@....com>, hpa@...or.com,
	luto@...capital.net, dave.hansen@...ux.intel.com, mingo@...e.hu,
	minchan@...nel.org, tglx@...utronix.de, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: LTP regressions due to 6dc296e7df4c ("mm: make sure all file
 VMAs have ->vm_ops set")

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@...temov.name> 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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