linux-kernel - Re: [PATCH 0/3] Virtual huge zero page

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Message-ID: <20121001185611.GA23132@shutemov.name>
Date:	Mon, 1 Oct 2012 21:56:11 +0300
From:	"Kirill A. Shutemov" <kirill@...temov.name>
To:	"H. Peter Anvin" <hpa@...ux.intel.com>
Cc:	Andrea Arcangeli <aarcange@...hat.com>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
	Andi Kleen <ak@...ux.intel.com>, linux-kernel@...r.kernel.org,
	Arnd Bergmann <arnd@...db.de>, Ingo Molnar <mingo@...nel.org>,
	linux-arch@...r.kernel.org
Subject: Re: [PATCH 0/3] Virtual huge zero page

On Mon, Oct 01, 2012 at 10:52:06AM -0700, H. Peter Anvin wrote:
> On 10/01/2012 10:44 AM, Kirill A. Shutemov wrote:
> > On Mon, Oct 01, 2012 at 10:37:23AM -0700, H. Peter Anvin wrote:
> >> One can otherwise argue that if hzp doesn't matter for except in a small
> >> number of cases that we shouldn't use it at all.
> > 
> > These small number of cases can easily trigger OOM if THP is enabled. :)
> > 
> 
> And that doesn't happen in any conditions that *aren't* helped by hzp?

Sure, OOM still can happen.
But if we can eliminate a class of problem why not to do so?

-- 
 Kirill A. Shutemov
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