linux-kernel - Re: [PATCH V4 0/2] mm: FAULT_AROUND_ORDER patchset performance data for powerpc

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Date:	Mon, 19 May 2014 16:43:01 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Hugh Dickins <hughd@...gle.com>
Cc:	Madhavan Srinivasan <maddy@...ux.vnet.ibm.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
	linux-mm@...ck.org, linux-arch@...r.kernel.org, x86@...nel.org,
	benh@...nel.crashing.org, paulus@...ba.org, riel@...hat.com,
	mgorman@...e.de, ak@...ux.intel.com, peterz@...radead.org,
	mingo@...nel.org, dave.hansen@...el.com
Subject: Re: [PATCH V4 0/2] mm: FAULT_AROUND_ORDER patchset performance data
 for powerpc

On Mon, 19 May 2014 16:23:07 -0700 (PDT) Hugh Dickins <hughd@...gle.com> wrote:

> Shouldn't FAULT_AROUND_ORDER and fault_around_order be changed to be
> the order of the fault-around size in bytes, and fault_around_pages()
> use 1UL << (fault_around_order - PAGE_SHIFT)

Yes.  And shame on me for missing it (this time!) at review.

There's still time to fix this.  Patches, please.
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