Messages in this thread | | | Date | Sun, 15 Aug 2010 08:25:29 +0300 | From | "M. Vefa Bicakci" <> | Subject | [Bisected Regression in 2.6.35] A full tmpfs filesystem causes hibernationto hang |
| |
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
| |