From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756938Ab3APAoT (ORCPT ); Tue, 15 Jan 2013 19:44:19 -0500 Received: from mail-da0-f52.google.com ([209.85.210.52]:51020 "EHLO mail-da0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756600Ab3APAoS (ORCPT ); Tue, 15 Jan 2013 19:44:18 -0500 Date: Tue, 15 Jan 2013 16:44:12 -0800 From: Tejun Heo To: Linus Torvalds Cc: Ming Lei , Alex Riesen , Alan Stern , Jens Axboe , USB list , Linux Kernel Mailing List , Arjan van de Ven Subject: Re: USB device cannot be reconnected and khubd "blocked for more than 120 seconds" Message-ID: <20130116004412.GL2668@htj.dyndns.org> References: <20130115183204.GE2668@htj.dyndns.org> <20130115235043.GJ2668@htj.dyndns.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jan 15, 2013 at 04:36:34PM -0800, Linus Torvalds wrote: > The thing is, the module loading in particular is not necessarily > happening in the same context as what *started* the module loading. A > module loader will request the module from user space, and then later > user space - through possibly a totally unrelated process - will > finish it. So there is no "myself". There's not even necessarily any > relationship that the kernel even knows about, because the module > loading request can have gone from usermode_helper over something like > dbus to systemd. > > See? Right. Gees, there's even no way to link them. -- tejun