linux-kernel - Re: [RFT PATCH v1 0/5] fix up inaccurate zone->present

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Date:	Mon, 26 Nov 2012 09:46:06 +0000
From:	Chris Clayton <chris2553@...glemail.com>
To:	Jiang Liu <liuj97@...il.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	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 v1 0/5] fix up inaccurate zone->present_pages



On 11/22/12 09:23, Chris Clayton wrote:
>>> This patchset has only been tested on x86_64 with nobootmem.c. So need
>>> help to test this patchset on machines:
>>> 1) use bootmem.c
>>> 2) have highmem
>>>
>>> This patchset applies to "f4a75d2e Linux 3.7-rc6" from
>>> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>>>
>>
>> I've applied the five patches to Linus' 3.7.0-rc6 and can confirm that
>> the kernel allows my system to resume from a suspend to disc. Although
>> my laptop is 64 bit, I run a 32 bit kernel with HIGHMEM (I have 8GB RAM):
>>
>> [chris:~/kernel/tmp/linux-3.7-rc6-resume]$ grep -E HIGHMEM\|X86_32
>> .config
>> CONFIG_X86_32=y
>> CONFIG_X86_32_SMP=y
>> CONFIG_X86_32_LAZY_GS=y
>> # CONFIG_X86_32_IRIS is not set
>> # CONFIG_NOHIGHMEM is not set
>> # CONFIG_HIGHMEM4G is not set
>> CONFIG_HIGHMEM64G=y
>> CONFIG_HIGHMEM=y
>>
>> I can also say that a quick browse of the output of dmesg, shows nothing
>> out of the ordinary. I have insufficient knowledge to comment on the
>> patches, but I will run the kernel over the next few days and report
>> back later in the week.
>>
>
> Well, I've been running the kernel since Sunday and have had no problems
> with my normal work mix of browsing, browsing the internet, video
> editing, listening to music and building software. I'm now running a
> kernel that build with the new patches 1 and 4 from yesterday (plus the
> original 1, 2 and 5). All seems OK so far, including a couple of resumes
> from suspend to disk.
>
>

-rc6 with Gerry's patches has run fine, including numerous resumes from 
suspend to disk, which fails (freezing or rebooting) without the 
patches. I've now applied the patches to -rc7 (they apply with a few 
offsets, but look OK) and will run that for a day or two.
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