linux-kernel - Re: [PATCH v4 3/5] pagemap: rework hugetlb and thp report

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Date:	Fri, 24 Jul 2015 19:19:06 +0100
From:	Mark Williamson <mwilliamson@...o-software.com>
To:	Konstantin Khlebnikov <koct9i@...il.com>
Cc:	Naoya Horiguchi <n-horiguchi@...jp.nec.com>,
	Konstantin Khlebnikov <khlebnikov@...dex-team.ru>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Kirill A. Shutemov" <kirill@...temov.name>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-api@...r.kernel.org" <linux-api@...r.kernel.org>
Subject: Re: [PATCH v4 3/5] pagemap: rework hugetlb and thp report

(my review on this patch comes with the caveat that the specifics of
hugetlb / thp are a bit outside my experience)

On Fri, Jul 24, 2015 at 7:17 PM, Mark Williamson
<mwilliamson@...o-software.com> wrote:
> Reviewed-by: Mark Williamson <mwilliamson@...o-software.com>
>
> On Tue, Jul 21, 2015 at 9:43 AM, Konstantin Khlebnikov <koct9i@...il.com> wrote:
>> On Tue, Jul 21, 2015 at 11:00 AM, Naoya Horiguchi
>> <n-horiguchi@...jp.nec.com> wrote:
>>> On Tue, Jul 14, 2015 at 06:37:39PM +0300, Konstantin Khlebnikov wrote:
>>>> This patch moves pmd dissection out of reporting loop: huge pages
>>>> are reported as bunch of normal pages with contiguous PFNs.
>>>>
>>>> Add missing "FILE" bit in hugetlb vmas.
>>>>
>>>> Signed-off-by: Konstantin Khlebnikov <khlebnikov@...dex-team.ru>
>>>
>>> With reflecting Kirill's comment about #ifdef, I'm OK for this patch.
>>
>> That ifdef works most like documentation: "all thp magic happens here".
>> I'd like to keep it, if two redundant lines isn't a big deal.
>>
>>>
>>> Reviewed-by: Naoya Horiguchi <n-horiguchi@...jp.nec.com>
>>> --
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