linux-kernel - Re: [RFT PATCH v2 4/5] mm: provide more accurate estimation of pages occupied by memmap

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Message-Id: <20121203151715.8c536a7a.akpm@linux-foundation.org>
Date:	Mon, 3 Dec 2012 15:17:15 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Chris Clayton <chris2553@...glemail.com>
Cc:	Jiang Liu <liuj97@...il.com>, Wen Congyang <wency@...fujitsu.com>,
	David Rientjes <rientjes@...gle.com>,
	Jiang Liu <jiang.liu@...wei.com>,
	Maciej Rutecki <maciej.rutecki@...il.com>,
	"Rafael J . Wysocki" <rjw@...k.pl>, Mel Gorman <mgorman@...e.de>,
	Minchan Kim <minchan@...nel.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Michal Hocko <mhocko@...e.cz>,
	Jianguo Wu <wujianguo@...wei.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [RFT PATCH v2 4/5] mm: provide more accurate estimation of
 pages occupied by memmap

On Sun, 02 Dec 2012 19:55:09 +0000
Chris Clayton <chris2553@...glemail.com> wrote:

> 
> 
> On 11/29/12 10:52, Chris Clayton wrote:
> > On 11/28/12 23:52, Andrew Morton wrote:
> >> On Wed, 21 Nov 2012 23:09:46 +0800
> >> Jiang Liu <liuj97@...il.com> wrote:
> >>
> >>> Subject: Re: [RFT PATCH v2 4/5] mm: provide more accurate estimation
> >>> of pages occupied by memmap
> >>
> >> How are people to test this?  "does it boot"?
> >>
> >
> > I've been running kernels with Gerry's 5 patches applied for 11 days
> > now. This is on a 64bit laptop but with a 32bit kernel + HIGHMEM. I
> > joined the conversation because my laptop would not resume from suspend
> > to disk - it either froze or rebooted. With the patches applied the
> > laptop does successfully resume and has been stable.
> >
> > Since Monday, I have have been running a kernel with the patches (plus,
> > from today, the patch you mailed yesterday) applied to 3.7rc7, without
> > problems.
> >
> 
> I've been running 3.7-rc7 with the patches listed below for a week now 
> and it has been perfectly stable. In particular, my laptop will now 
> successfully resume from suspend to disk, which always failed without 
> the patches.
> 
>  From Jiang Liu:
> 1. [RFT PATCH v2 1/5] mm: introduce new field "managed_pages" to struct zone
> 2. [RFT PATCH v1 2/5] mm: replace zone->present_pages with 
> zone->managed_pages if appreciated
> 3. [RFT PATCH v1 3/5] mm: set zone->present_pages to number of existing 
> pages in the zone
> 4. [RFT PATCH v2 4/5] mm: provide more accurate estimation of pages 
> occupied by memmap
> 5. [RFT PATCH v1 5/5] mm: increase totalram_pages when free pages 
> allocated by bootmem allocator
> 
>  From Andrew Morton:
> 6. mm-provide-more-accurate-estimation-of-pages-occupied-by-memmap.patch
> 
> Tested-by: Chris Clayton <chris2553@...glemail.com>

Thanks.

I have only two of these five patches queued for 3.8:
mm-introduce-new-field-managed_pages-to-struct-zone.patch and
mm-provide-more-accurate-estimation-of-pages-occupied-by-memmap.patch. 
I don't recall what happened with the other three.
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