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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B709AFA3742 for ; Sun, 30 Oct 2022 08:13:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229642AbiJ3INZ (ORCPT ); Sun, 30 Oct 2022 04:13:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58482 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229441AbiJ3INY (ORCPT ); Sun, 30 Oct 2022 04:13:24 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B25C718B; Sun, 30 Oct 2022 01:13:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; 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=qDxMZSkyyFWSUZLR/zgbATIw970wK8DPWliBx9KgMxU=; b=I3h1LwtQTwdn70nvX8XupBOqlo KZZqvJTNMJuUYLS/stq2eRAL45oqsgygNvWAFl6dp5ytI5pawaMmrXNWcg8gzgnF6HfKbKAxmrKI/ cUo5UI43DFPCPWvXciTVXC7gM5xcpjWKlmKqEMDs3jaV9uGg7F2ZAo9GexG/79bAdWubiAHm3Wc0A uaVFC+7iphDXTdIyk2nQ0fgfMr+dCS8qdJFsNJHLoOk7crZaNgbyLoQ2reQ+iA/U2OjmiME8SG4Ii ZpaanpKLABFgOYIGnJxIRMG6nMJbx0X9CqHzvCdd1hxOA+gCV80iLHgnQZkWA9skhvcY7FfDLTc73 feU2CDeQ==; Received: from hch by bombadil.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1op3RB-00E4vm-0j; Sun, 30 Oct 2022 08:12:57 +0000 Date: Sun, 30 Oct 2022 01:12:56 -0700 From: Christoph Hellwig To: Al Viro Cc: Christoph Hellwig , David Howells , willy@infradead.org, dchinner@redhat.com, Steve French , Shyam Prasad N , Rohith Surabattula , Jeff Layton , Ira Weiny , torvalds@linux-foundation.org, linux-cifs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 01/12] get rid of unlikely() on page_copy_sane() calls Message-ID: References: <20221028023352.3532080-1-viro@zeniv.linux.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20221028023352.3532080-1-viro@zeniv.linux.org.uk> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org This could explain why your are dropping the unlikely, 'cause just from the page this is non-obvious. Especially as the patch seems to do a lot more than just removing an unlikely.