From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261337AbULWXhZ (ORCPT ); Thu, 23 Dec 2004 18:37:25 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261344AbULWXhZ (ORCPT ); Thu, 23 Dec 2004 18:37:25 -0500 Received: from fw.osdl.org ([65.172.181.6]:29376 "EHLO mail.osdl.org") by vger.kernel.org with ESMTP id S261337AbULWXhW (ORCPT ); Thu, 23 Dec 2004 18:37:22 -0500 Date: Thu, 23 Dec 2004 15:37:16 -0800 (PST) From: Linus Torvalds To: Andrew Morton cc: Jesper Juhl , holt@sgi.com, linux-kernel@vger.kernel.org Subject: Re: [PATCH] AB-BA deadlock between uidhash_lock and tasklist_lock. In-Reply-To: <20041223153053.173098f5.akpm@osdl.org> Message-ID: References: <20041222220800.GB6213@lnx-holt.americas.sgi.com> <20041223173749.GA18887@lnx-holt.americas.sgi.com> <20041223145433.596db88c.akpm@osdl.org> <20041223153053.173098f5.akpm@osdl.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 23 Dec 2004, Andrew Morton wrote: > > hrm. Why don't we just do this? Seems sane enough. Nobody should look at somebody elses user anyway. The signal code does, though. That's a separate bug (and looks harmless), and that code doesn't hold tasklist_lock anyway, so the lock doesn't matter for that thing. Linus