From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758789Ab2EUSZq (ORCPT ); Mon, 21 May 2012 14:25:46 -0400 Received: from mx1.redhat.com ([209.132.183.28]:57046 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750805Ab2EUSZp (ORCPT ); Mon, 21 May 2012 14:25:45 -0400 Date: Mon, 21 May 2012 20:24:17 +0200 From: Oleg Nesterov To: Boaz Harrosh Cc: Tetsuo Handa , rusty@rustcorp.com.au, akpm@linux-foundation.org, torvalds@linux-foundation.org, tj@kernel.org, linux-kernel@vger.kernel.org Subject: Re: call_usermodehelper && check_hung_uninterruptible_tasks Message-ID: <20120521182417.GA4297@redhat.com> References: <4F6A93F5.1070202@panasas.com> <201203241028.IGJ09825.MtOVFHFJQSLOFO@I-love.SAKURA.ne.jp> <4F6D35F0.2020808@panasas.com> <20120323200028.fadf49f8.akpm@linux-foundation.org> <20120324145308.GA10023@redhat.com> <201205191121.BIF57837.FHFOtMOLJQSOFV@I-love.SAKURA.ne.jp> <4FB7170F.7070807@panasas.com> <20120521170135.GA31803@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20120521170135.GA31803@redhat.com> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 05/21, Oleg Nesterov wrote: > > But there is another problem, wait_for_completion/wait_for_completion_killable > are not freezer-friendly. Perhaps something like the patch below? Just in case, > it should silence check_hung_uninterruptible_tasks() as well. Ah, please ignore. I forgot about freeze_processes()->usermodehelper_disable(). Oleg.