linux-kernel - Re: [PATCH for review] [11/48] x86_64: During VM oom condition, kill all threads in process group

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Message-Id: <1184857389.22237.20.camel@farscape.rchland.ibm.com>
Date:	Thu, 19 Jul 2007 10:03:09 -0500
From:	Will Schmidt <will_schmidt@...t.ibm.com>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	Christoph Hellwig <hch@...radead.org>, Andi Kleen <ak@...e.de>,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: [PATCH for review] [11/48] x86_64: During VM oom condition,
	kill all threads in process group

On Thu, 2007-07-19 at 16:14 +0200, Geert Uytterhoeven wrote:
> On Thu, 19 Jul 2007, Christoph Hellwig wrote:
> > On Thu, Jul 19, 2007 at 03:48:40PM +0200, Andi Kleen wrote:
> > > From: Will Schmidt <will_schmidt@...t.ibm.com>
> > > 
> > > During a VM oom condition, kill all threads in the process group.
> > > 
> > > We have had complaints where a threaded application is left in a bad state
> > > after one of it's threads is killed when we hit a VM: out_of_memory condition.
> > > 
> > > Killing just one of the process threads can leave the application in a bad
> > > state, whereas killing the entire process group would allow for the
> > > application to restart, or otherwise handled, and makes it very obvious that
> > > something has gone wrong.
> > > 
> > > This change allows the entire process group to be taken down, rather than just
> > > the one thread.
> > 
> > Shouldn't we have one patc hthat does this for every architecture instead
> > of going through arch maintainers and probably losing half of them?
> 
> Yes, please ;-)

Ok, i'm convinced. :-)      I'll spin up an all-arch encompassing patch
in the next day or so. 

-Will



> 
> Gr{oetje,eeting}s,
> 
> 						Geert
> 
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org
> 
> return -EMAINTAINER_TOO_BUSY

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