Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755246Ab1DDS1l (ORCPT ); Mon, 4 Apr 2011 14:27:41 -0400 Received: from mail-vx0-f174.google.com ([209.85.220.174]:54642 "EHLO mail-vx0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752864Ab1DDS1j (ORCPT ); Mon, 4 Apr 2011 14:27:39 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:message-id:date:from:user-agent:mime-version:to:cc:subject :content-type:content-transfer-encoding; b=qZ7XfEnttVtUG36ivfHMaBulG1jL61Mq8uPEj7k0qvX4R3NZX47Pqjmny4CxRDu+jG acY0kJhmaXEjLZG/awA5qUI9j5pJaGYX3d/vLjOaZb9zb2jECh4lVj7Jl+INLy/gzeDB cRYRaBUFDhmaGqzDxJPMQoxUV1dVYNc6v1dNY= Message-ID: <4D9A0D97.1060505@lwfinger.net> Date: Mon, 04 Apr 2011 13:27:35 -0500 From: Larry Finger User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.14) Gecko/20110221 SUSE/3.1.8 Thunderbird/3.1.8 MIME-Version: 1.0 To: Jens Axboe , Linus Torvalds CC: LKML , wireless Subject: Regression in 2.6.39-rc1 from commit 7eaceaccab5f40bbfda044629a6298616aeaed50 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1418 Lines: 34 After I pulled 2.6.39-rc1, my HP laptop failed to boot by never advancing past the device detection stage on my x86_64 system. The problem was bisected, which led to: 7eaceaccab5f40bbfda044629a6298616aeaed50 is the first bad commit commit 7eaceaccab5f40bbfda044629a6298616aeaed50 Author: Jens Axboe Date: Thu Mar 10 08:52:07 2011 +0100 block: remove per-queue plugging Code has been converted over to the new explicit on-stack plugging, and delay users have been converted to use the new API for that. So lets kill off the old plugging along with aops->sync_page(). Signed-off-by: Jens Axboe As this patch cannot be reversed on current 2.6.39-rc1-git, I have not been able to do the final test of reverting it, but the bisection was straight forward. When the system hangs, I can get it to finish booting if I type CTRL/C; however, the only disk partition that has been mounted is /. If it matters, I use a mixture of ext3 and ext4 file systems. My disk controller is "nVidia Corporation MCP67 IDE Controller [10de:0560] (rev a1)" Please let me know what additional info is needed. Larry -- 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/