linux-kernel - Re: [PATCH 03/10] mm: Convert p[te|md]_numa users to p[te|md]_protnone

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Message-ID: <20141120104722.GL2725@suse.de>
Date:	Thu, 20 Nov 2014 10:47:22 +0000
From:	Mel Gorman <mgorman@...e.de>
To:	David Laight <David.Laight@...LAB.COM>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>,
	Rik van Riel <riel@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Hugh Dickins <hughd@...gle.com>, Linux-MM <linux-mm@...ck.org>,
	Ingo Molnar <mingo@...hat.com>,
	Paul Mackerras <paulus@...ba.org>,
	Aneesh Kumar <aneesh.kumar@...ux.vnet.ibm.com>,
	Sasha Levin <sasha.levin@...cle.com>,
	Dave Jones <davej@...hat.com>,
	LinuxPPC-dev <linuxppc-dev@...ts.ozlabs.org>,
	Kirill Shutemov <kirill.shutemov@...ux.intel.com>
Subject: Re: [PATCH 03/10] mm: Convert p[te|md]_numa users to
 p[te|md]_protnone_numa

On Thu, Nov 20, 2014 at 10:38:56AM +0000, David Laight wrote:
> From:  Mel Gorman
> > Convert existing users of pte_numa and friends to the new helper. Note
> > that the kernel is broken after this patch is applied until the other
> > page table modifiers are also altered. This patch layout is to make
> > review easier.
> 
> Doesn't that break bisection?
> 

Yes, for automatic NUMA balancing at least. The patch structure is to
to make reviewers job easier and besides, bisecting within patches 2-6
is pointless. If desired, I can collapse patches 2-6 together for the
final submission.

-- 
Mel Gorman
SUSE Labs
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