Return-path: 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 Message-ID: <4D9A0D97.1060505@lwfinger.net> Date: Mon, 04 Apr 2011 13:27:35 -0500 From: Larry Finger 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 Sender: linux-wireless-owner@vger.kernel.org List-ID: 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