From patchwork Mon Mar 29 07:58:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "gregkh@linuxfoundation.org" X-Patchwork-Id: 412737 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=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, 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 D57F7C433F1 for ; Mon, 29 Mar 2021 08:11:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B5A34619C9 for ; Mon, 29 Mar 2021 08:11:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232228AbhC2IKp (ORCPT ); Mon, 29 Mar 2021 04:10:45 -0400 Received: from mail.kernel.org ([198.145.29.99]:53616 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232257AbhC2IJz (ORCPT ); Mon, 29 Mar 2021 04:09:55 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 4917C6196B; Mon, 29 Mar 2021 08:09:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1617005394; bh=esad7pZWYAbNlUIX7GWd8qmeApggKWKHjeL/3qt/QXk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SMXjQsWAbLl3OfqqFRXLIvyJ0GKl6nulqDZi+D5vM0CqJcxWgaoAprTPUuHasLtfb bXjBFDs141kC9SkybOO+ZxybGvDIlK6VkgCmOxzfnWyilHgn7RvvzxLCcmOBlzM4u0 UtWwnwo2z1adYT2RdPKe6wHvr0ZzqfRt2WKCQGis= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Thomas Gleixner , "Peter Zijlstra (Intel)" , Ingo Molnar Subject: [PATCH 4.19 65/72] locking/mutex: Fix non debug version of mutex_lock_io_nested() Date: Mon, 29 Mar 2021 09:58:41 +0200 Message-Id: <20210329075612.419262374@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210329075610.300795746@linuxfoundation.org> References: <20210329075610.300795746@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Thomas Gleixner commit 291da9d4a9eb3a1cb0610b7f4480f5b52b1825e7 upstream. If CONFIG_DEBUG_LOCK_ALLOC=n then mutex_lock_io_nested() maps to mutex_lock() which is clearly wrong because mutex_lock() lacks the io_schedule_prepare()/finish() invocations. Map it to mutex_lock_io(). Fixes: f21860bac05b ("locking/mutex, sched/wait: Fix the mutex_lock_io_nested() define") Signed-off-by: Thomas Gleixner Signed-off-by: Peter Zijlstra (Intel) Signed-off-by: Ingo Molnar Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/878s6fshii.fsf@nanos.tec.linutronix.de Signed-off-by: Greg Kroah-Hartman --- include/linux/mutex.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/include/linux/mutex.h +++ b/include/linux/mutex.h @@ -184,7 +184,7 @@ extern void mutex_lock_io(struct mutex * # define mutex_lock_interruptible_nested(lock, subclass) mutex_lock_interruptible(lock) # define mutex_lock_killable_nested(lock, subclass) mutex_lock_killable(lock) # define mutex_lock_nest_lock(lock, nest_lock) mutex_lock(lock) -# define mutex_lock_io_nested(lock, subclass) mutex_lock(lock) +# define mutex_lock_io_nested(lock, subclass) mutex_lock_io(lock) #endif /*