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=-3.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,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 C2E44C2D0A3 for ; Sun, 1 Nov 2020 17:38:54 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 54DAA2080A for ; Sun, 1 Nov 2020 17:38:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="dDb9DLvI" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 54DAA2080A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id B476F6B0073; Sun, 1 Nov 2020 12:38:53 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id AD00A6B0074; Sun, 1 Nov 2020 12:38:53 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 998746B0075; Sun, 1 Nov 2020 12:38:53 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0007.hostedemail.com [216.40.44.7]) by kanga.kvack.org (Postfix) with ESMTP id 67E236B0073 for ; Sun, 1 Nov 2020 12:38:53 -0500 (EST) Received: from smtpin12.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 12422180AD811 for ; Sun, 1 Nov 2020 17:38:53 +0000 (UTC) X-FDA: 77436559746.12.yard88_250e7be272a9 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin12.hostedemail.com (Postfix) with ESMTP id E4CE618005117 for ; Sun, 1 Nov 2020 17:38:52 +0000 (UTC) X-HE-Tag: yard88_250e7be272a9 X-Filterd-Recvd-Size: 2666 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf15.hostedemail.com (Postfix) with ESMTP for ; Sun, 1 Nov 2020 17:38:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=XmCp6bSuR9tTVxgEFeisGEza8G1MS4j5+U46dEfFIBw=; b=dDb9DLvIr15G5snKku84SYDgWL fpqE8OUDzp5grbtLbZDIu3y9WELk7vE2e7GrM6w0J9oD6aU4KF1lwzokCmH1YyLCSHhTlFT1VPxic Whb5+xnf210VD4UbA6+pjKQqCQFVzbX3ggAV7+cwFMv/+TJrbojd1Qxa950d8oUU+0dng0X4v5dC5 VK7bW45dTCRwzxXL8wd+8zMTaDKxNTXosNpBD7ouArYOVkxlxg6G2vAp5YIBsj0+WLvLCCYAPDRI3 ifwjs+sFN5qLYXR7gE9KxJVrkmyvvjc3cf+49M9XYXjZpqSeVFSl5FagBVqVCMB5uRbPmW9lZaFQJ XZ/MO1hg==; Received: from willy by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1kZHJL-0008G9-HQ; Sun, 01 Nov 2020 17:38:35 +0000 Date: Sun, 1 Nov 2020 17:38:35 +0000 From: Matthew Wilcox To: Arvind Sankar Cc: kernel test robot , linux-next@vger.kernel.org, Stephen Rothwell , kbuild-all@lists.01.org, Linux Memory Management List , Nick Desaulniers , Kees Cook , Andrew Morton , stable@vger.kernel.org Subject: Re: [PATCH] compiler.h: Move barrier() back into compiler-*.h Message-ID: <20201101173835.GC27442@casper.infradead.org> References: <202010312104.Dk9VQJYb-lkp@intel.com> <20201101173105.1723648-1-nivedita@alum.mit.edu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201101173105.1723648-1-nivedita@alum.mit.edu> X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Sun, Nov 01, 2020 at 12:31:05PM -0500, Arvind Sankar wrote: > Commit > b9de06783f01 ("compiler.h: fix barrier_data() on clang") > moved the definition of barrier() into compiler.h. That's not a real commit ID. It only exists in linux-next and will expire after a few weeks. The right way to fix a patch in Andrew's tree is to send an email asking him to apply it as a -fix patch. As part of Andrew's submission process, he folds all the -fix patches into the parent patch and it shows up pristine in Linus' tree. > This causes build failures at least on alpha, because there are files > that rely on barrier() being defined via the implicit include of > compiler_types.h. That seems like a bug that should be fixed rather than reverting this part of the patch?