Re: [RFT PATCH v2 4/5] mm: provide more accurate estimation of pagesoccupied by memmap

[Chris Clayton]

On 12/03/12 23:17, Andrew Morton wrote:
> On Sun, 02 Dec 2012 19:55:09 +0000
> Chris Clayton <chris2553@xxxxxxxxxxxxxx> 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@xxxxxxxxx> 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@xxxxxxxxxxxxxx>
>
> 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.

Gerry posted version 1 of the five patches on 18 November. Version 2 of 
the first and fourth patches were posted on 21 November.

BTW, the title of Andrew's patch that I applied is wrong above. It 
should be 
mm-provide-more-accurate-estimation-of-pages-occupied-by-memmap-fix.

Chris


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