From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 836B7C83000 for ; Tue, 28 Apr 2020 21:43:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 67B1A20730 for ; Tue, 28 Apr 2020 21:43:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726690AbgD1VnC (ORCPT ); Tue, 28 Apr 2020 17:43:02 -0400 Received: from out03.mta.xmission.com ([166.70.13.233]:44202 "EHLO out03.mta.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726364AbgD1VnB (ORCPT ); Tue, 28 Apr 2020 17:43:01 -0400 Received: from in02.mta.xmission.com ([166.70.13.52]) by out03.mta.xmission.com with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jTY0K-0004u4-GB; Tue, 28 Apr 2020 15:43:00 -0600 Received: from ip68-227-160-95.om.om.cox.net ([68.227.160.95] helo=x220.xmission.com) by in02.mta.xmission.com with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.87) (envelope-from ) id 1jTY0J-00015a-OA; Tue, 28 Apr 2020 15:43:00 -0600 From: ebiederm@xmission.com (Eric W. Biederman) To: LKML Cc: Oleg Nesterov , Linus Torvalds , Thomas Gleixner References: <20200419141057.621356-1-gladkov.alexey@gmail.com> <87ftcv1nqe.fsf@x220.int.ebiederm.org> <87wo66vvnm.fsf_-_@x220.int.ebiederm.org> <20200424173927.GB26802@redhat.com> <87mu6ymkea.fsf_-_@x220.int.ebiederm.org> <875zdmmj4y.fsf_-_@x220.int.ebiederm.org> <878sihgfzh.fsf@x220.int.ebiederm.org> <87sggnajpv.fsf_-_@x220.int.ebiederm.org> <20200428180540.GB29960@redhat.com> Date: Tue, 28 Apr 2020 16:39:44 -0500 In-Reply-To: <20200428180540.GB29960@redhat.com> (Oleg Nesterov's message of "Tue, 28 Apr 2020 20:05:41 +0200") Message-ID: <87mu6v70in.fsf_-_@x220.int.ebiederm.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-XM-SPF: eid=1jTY0J-00015a-OA;;;mid=<87mu6v70in.fsf_-_@x220.int.ebiederm.org>;;;hst=in02.mta.xmission.com;;;ip=68.227.160.95;;;frm=ebiederm@xmission.com;;;spf=neutral X-XM-AID: U2FsdGVkX1+UtBNkHu4rLIVo9CsZRAkkaksr2Rapk5s= X-SA-Exim-Connect-IP: 68.227.160.95 X-SA-Exim-Mail-From: ebiederm@xmission.com Subject: [PATCH v1 0/4] signal: Removing has_group_leader_pid X-SA-Exim-Version: 4.2.1 (built Thu, 05 May 2016 13:38:54 -0600) X-SA-Exim-Scanned: Yes (on in02.mta.xmission.com) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org With de_thread now calling exchange_tids has_group_leader_pid no longer makes any sense and is equivalent to calling thread_group_leader. As there are only 2 remaining users of has_group_leader_pid let's update the code and get rid of has_group_leader_pid. There is one extra patch to lookup_task that performs that unifies to code paths that become identical when has_group_leader_pid went away. Eric W. Biederman (4): posix-cpu-timer: Tidy up group_leader logic in lookup_task posix-cpu-timer: Unify the now redundant code in lookup_task exec: Remove BUG_ON(has_group_leader_pid) signal: Remove has_group_leader_pid fs/exec.c | 1 - include/linux/sched/signal.h | 11 ----------- kernel/time/posix-cpu-timers.c | 21 ++++++++------------- 3 files changed, 8 insertions(+), 25 deletions(-)