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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 81905C433E9 for ; Fri, 26 Feb 2021 17:52:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3C8AF64F17 for ; Fri, 26 Feb 2021 17:52:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230206AbhBZRw1 (ORCPT ); Fri, 26 Feb 2021 12:52:27 -0500 Received: from mx2.suse.de ([195.135.220.15]:54850 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230049AbhBZRvu (ORCPT ); Fri, 26 Feb 2021 12:51:50 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 84CDCAFCC; Fri, 26 Feb 2021 17:51:08 +0000 (UTC) From: Davidlohr Bueso To: tglx@linutronix.de Cc: mingo@redhat.com, peterz@infradead.org, dvhart@infradead.org, dave@stgolabs.net, linux-kernel@vger.kernel.org, Davidlohr Bueso Subject: [PATCH 4/4] kernel/futex: Explicitly document pi_lock for pi_state owner fixup Date: Fri, 26 Feb 2021 09:50:29 -0800 Message-Id: <20210226175029.50335-4-dave@stgolabs.net> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210226175029.50335-1-dave@stgolabs.net> References: <20210226175029.50335-1-dave@stgolabs.net> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This seems to belong in the serialization and lifetime rules section. pi_state_update_owner() will take the pi_mutex's owner's pi_lock to do whatever fixup, successful or not. Signed-off-by: Davidlohr Bueso --- kernel/futex.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/futex.c b/kernel/futex.c index dcd6132485e1..475055715371 100644 --- a/kernel/futex.c +++ b/kernel/futex.c @@ -981,6 +981,7 @@ static inline void exit_pi_state_list(struct task_struct *curr) { } * p->pi_lock: * * p->pi_state_list -> pi_state->list, relation + * pi_mutex->owner -> pi_state->owner, relation * * pi_state->refcount: * -- 2.26.2