From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753007Ab0CWIhn (ORCPT ); Tue, 23 Mar 2010 04:37:43 -0400 Received: from mx1.redhat.com ([209.132.183.28]:42804 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751898Ab0CWIhm (ORCPT ); Tue, 23 Mar 2010 04:37:42 -0400 Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 From: David Howells In-Reply-To: <20100322184136.GA3967@redhat.com> References: <20100322184136.GA3967@redhat.com> To: Oleg Nesterov Cc: dhowells@redhat.com, Andrew Morton , Alexey Dobriyan , "Eric W. Biederman" , Roland McGrath , linux-kernel@vger.kernel.org Subject: Re: [PATCH -mm 3/3] proc: make task_sig() lockless Date: Tue, 23 Mar 2010 08:37:29 +0000 Message-ID: <15829.1269333449@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Oleg Nesterov wrote: > task_sig() doesn't need ->siglock. Except that the data returned might then be inconsistent because you don't hold a lock as you read the various bits of it. David