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Date:	Fri, 03 Oct 2014 12:02:08 -0400
From:	Sasha Levin <>
To:	Dave Jones <>,
	Linus Torvalds <>,
	Hugh Dickins <>,
	Al Viro <>,
	Linux Kernel <>,
	Rik van Riel <>,
	Ingo Molnar <>,
	Michel Lespinasse <>,
	"Kirill A. Shutemov" <>,
	Mel Gorman <>
Subject: Re: pipe/page fault oddness.

On 10/03/2014 11:58 AM, Dave Jones wrote:
> On Fri, Oct 03, 2014 at 08:43:57AM -0700, Linus Torvalds wrote:
>  > On Thu, Oct 2, 2014 at 10:00 PM, Sasha Levin <> wrote:
>  > >
>  > > For the record, I tweaked the environment to put some more pressure on the
>  > > scheduler and found out what broke (which is not related to this thread at
>  > > all).
>  > 
>  > Ok. It's probably still worth testing Mel's patches, since that's what
>  > goes into 3.17. But it would be interesting to eventually go back to
>  > stability-testing the protnone set, since it *looked* like it was
>  > working well aside from this issue. I might decide to just do it
>  > during the 3.18 merge window..

Linus, I'm running with Mel's patches since yesterday, nothing interesting
to report.

> FYI, I've been trying to reproduce that initial bug all week, and
> haven't seen a single reoccurance of it, just other bugs.
> Kind of a pain in the ass for confirming this numa stuff was indeed
> the cause, but that's been true of so many of the more obscure bugs
> trinity has shaken out.

+1, it seems to have "disappeared", quite annoying :/

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