Thread (49 messages) 49 messages, 11 authors, 2012-12-04

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

From: Chris Clayton <hidden>
Date: 2012-12-04 10:05:59
Also in: lkml


On 12/03/12 23:17, Andrew Morton wrote:
On Sun, 02 Dec 2012 19:55:09 +0000
Chris Clayton [off-list ref] wrote:
quoted

On 11/29/12 10:52, Chris Clayton wrote:
quoted
On 11/28/12 23:52, Andrew Morton wrote:
quoted
On Wed, 21 Nov 2012 23:09:46 +0800
Jiang Liu [off-list ref] wrote:
quoted
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 <redacted>
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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