linux-kernel - Re: [Bisected Regression in 2.6.35] A full tmpfs filesystem causeshibernationto hang

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Date:	Thu, 26 Aug 2010 13:36:55 +0300
From:	"M. Vefa Bicakci" <bicave@...eronline.com>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [Bisected Regression in 2.6.35] A full tmpfs filesystem causeshibernationto hang

On 26/08/10 11:09 AM, KOSAKI Motohiro wrote:
>> If there is anything I can do to debug this problem please let me
>> know.
> 
> Vefa, your above log is very useful. really thanks.
> So, I'm convinced two things.
>  - my patch is purely unrelated.
>  - how to fix your issue.
> 
> Can you please try attached patch? I bet this can solve your issue.
> 
> Thanks for your patience.

Hello!

First of all, thanks a lot for your help - I really appreciate it.

I applied your new patches on top of your old patches. Hopefully that
was okay.

Unfortunately, it didn't work this time. Here's a sample output from the
new patch.

=== 8< ===
[58.050208] PM: Preallocating image memory...
[58.159881] shrink_all_memory start
[58.232411] PM: shrink memory: pass=1, req:312373 reclaimed:15864 free:358420
[58.342041] PM: shrink memory: pass=2, req:296509 reclaimed:21837 free:362167
[60.690035] PM: shrink memory: pass=3, req:274672 reclaimed:25982 free:348006
[61.754931] PM: shrink memory: pass=4, req:248690 reclaimed:49623 free:371589
[64.361714] PM: shrink memory: pass=5, req:199067 reclaimed:74683 free:396695
[64.361769] shrink_all_memory: req:124384 reclaimed:74683 free:396695
=== >8 ===

The interesting thing is that even though there is a lot of free memory at the
end, it still hangs. I also included the timestamps; note the one and two second
delays between the passes.

Please let me know if there is anything I can do.

Regards,

M. Vefa Bicakci
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