Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932081Ab0HOFZr (ORCPT ); Sun, 15 Aug 2010 01:25:47 -0400 Received: from smtpauth.tellcom.com.tr ([92.45.6.165]:24793 "EHLO smtpout1.superonline.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751933Ab0HOFZq (ORCPT ); Sun, 15 Aug 2010 01:25:46 -0400 Message-ID: <4C677A49.4030904@superonline.com> Date: Sun, 15 Aug 2010 08:25:29 +0300 From: "M. Vefa Bicakci" User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.8) Gecko/20100813 Icedove/3.1.2 MIME-Version: 1.0 To: Linux Kernel Mailing List CC: KOSAKI Motohiro Subject: [Bisected Regression in 2.6.35] A full tmpfs filesystem causes hibernationto hang Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-SMTP-Filter: SurGATE SMTP Filter Engine Release 2.1 ($Revision: 184 $) http://www.endersys.com X-SurGATE-Result: Clean (Content eval: 2.00 points) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1645 Lines: 49 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 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/