linux-kernel - Re: [RFC PATCH 0/5] Use an alternative to _PAGE_PROTNONE for _PAGE

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Message-ID: <20140408190625.GQ7292@suse.de>
Date:	Tue, 8 Apr 2014 20:06:26 +0100
From:	Mel Gorman <mgorman@...e.de>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	"H. Peter Anvin" <hpa@...or.com>, Linux-X86 <x86@...nel.org>,
	Cyrill Gorcunov <gorcunov@...il.com>,
	Ingo Molnar <mingo@...nel.org>,
	Steven Noonan <steven@...inklabs.net>,
	Rik van Riel <riel@...hat.com>,
	David Vrabel <david.vrabel@...rix.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Dave Hansen <dave.hansen@...el.com>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Linux-MM <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH 0/5] Use an alternative to _PAGE_PROTNONE for
 _PAGE_NUMA v2

On Tue, Apr 08, 2014 at 11:55:22AM -0700, Linus Torvalds wrote:
> On Tue, Apr 8, 2014 at 11:51 AM, Mel Gorman <mgorman@...e.de> wrote:
> >
> > I picked a solution. The posted series uses a different bit.
> 
> Yes, and I actually like that. I have nothing against your patch
> series. I'm ranting and raving because you then seemed to say "maybe
> we shouldn't pick a solution after all" when you said:
> 
> > > If you are ok with leaving _PAGE_NUMA as _PAGE_PROTNONE
> 
> which was what I reacted to.
> 

Ok, my bad. To be absolutly clear I want to move away from aliasing the
_PAGE_PROTNONE bit. As David reports the series works for him, I'll wait
a bit to see if there are objections or an alternative patch series from
another direction. If not, I'll remove the RFC and repost it through the
x86 maintainers.

-- 
Mel Gorman
SUSE Labs
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