lkml.org 
[lkml]   [2010]   [Aug]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [Bisected Regression in 2.6.35] A full tmpfs filesystem causes hibernationto hang
Date
> Hello all,
>
> I am using Debian Sid on a Toshiba Satellite A100 laptop. After testing
> 2.6.35 for a while, I noticed that sometimes my hibernation attempts
> would fail. I should say that I never had such a problem before 2.6.35.
> The hibernation process hangs with 2.6.35 after printing the following:
>
> === 8< ===
> ...
> Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
> PM: Preallocating image memory...
> === >8 ===
>
> After a short investigation, I found out that this only happens when my
> tmpfs filesystem on /tmp had a lot of data in it. When my tmpfs is empty,
> I have no problems.
>
> So I wrote a short script which fills up the tmpfs on /tmp and tries to
> hibernate, and I bisected the kernel using this script.
>
> The end result is that the following commit causes this regression:
>
> === 8< ===
> commit bb21c7ce18eff8e6e7877ca1d06c6db719376e3c
> Author: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
> Date: Fri Jun 4 14:15:05 2010 -0700
>
> vmscan: fix do_try_to_free_pages() return value when priority==0 reclaim failure
>
> ...
> === >8 ===
>
> I have run 2.6.35-rc6, 2.6.35 and 2.6.35.1 with this commit reverted,
> and I am happy to say that I haven't experienced any problems for at
> least 17 days.
>
> It looks like this change was included with 2.6.35-rc1. I am sorry
> for not testing earlier.
>
> I am willing to do testing in case anyone would like me to try patches.
>
> Regards,
>
> M. Vefa Bicakci

Hmm...
I've tested hibernation case for a while. but I have no luck. I couldn't
reproduce your issue. Very sorry. Can you please help our debugging?
If possible, I hope to run following three test.

1. Please let me know your machine & test script

% cat /proc/meminfo
% cat /proc/vmstat
% cat /proc/zoneinfo
% df
% cat your-fills-up-the-tmpfs-script

2. call shrink_all_memory() forcely and show result

% cat /proc/meminfo
% cat /proc/zoneinfo
# echo 1 > /proc/sys/vm/shrink_all_memory
# tail /var/log/messages
% cat /proc/meminfo
% cat /proc/zoneinfo


3. reset zone_reclaim_stat and rerun shrink_all_memory

# echo 1 > /proc/sys/vm/reset_reclaim_stat
% cat /proc/meminfo
% cat /proc/zoneinfo
# echo 1 > /proc/sys/vm/shrink_all_memory
# tail /var/log/messages
% cat /proc/meminfo
% cat /proc/zoneinfo


[unhandled content-type:application/octet-stream][unhandled content-type:application/octet-stream][unhandled content-type:application/octet-stream]
\
 
 \ /
  Last update: 2010-08-22 13:09    [W:0.152 / U:0.540 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site