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=-8.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 9878FC48BCD for ; Thu, 10 Jun 2021 09:10:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 847DA61249 for ; Thu, 10 Jun 2021 09:10:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230331AbhFJJMo (ORCPT ); Thu, 10 Jun 2021 05:12:44 -0400 Received: from mail-lf1-f54.google.com ([209.85.167.54]:44652 "EHLO mail-lf1-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229990AbhFJJMn (ORCPT ); Thu, 10 Jun 2021 05:12:43 -0400 Received: by mail-lf1-f54.google.com with SMTP id r198so2053347lff.11 for ; Thu, 10 Jun 2021 02:10:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=shutemov-name.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=RioqOdzdRiLsc62ht2G8+44sOJidvgbpfl8gprWW3as=; b=Uo0N65qx8MhaEKrrRkjcPKeXi7/fw07uTt89i+jf3zUHDlLLx+Nt8onjDOTMMc9mD9 8IN7kVb9V5KSRFfYdF4fST77xelWZtJRonVk9vpDBrEQB5Q2bY6rNRLNlZbDFqAgLTsx 8P6dCRzVD8+gHQq7YaIlcc0JIbOVTvVGP05jAftAlAnqCXV2uPZhb52nHMmb6d1cZRmh qFvUSL5ecV4aRtTfDXMzu/6JyEghU+qQx8+Z9EPt77bc8zW5Q0sAAyYegzA9YdAKjzUX VVgRHL/m/eeOSj1zjkZV0XUwcnZ2/H6pFQx//cw+fcmWe11oBEOpRCYAXXQgCmAF7b07 E8yw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=RioqOdzdRiLsc62ht2G8+44sOJidvgbpfl8gprWW3as=; b=XS7+wNj8LZihcylDvBFGCEFRZwlLGnxzuzwlic4PyI/5Kx4n5fD9PE7um/q6F0XcQa bX3HRvLy0wK9dMUrZJT0Nmdne7r83bFtHBeI93O+FP0FHg1ZW0JlEMiD/966JwkJvI9F 3OPTSJGhCoB2LIfEGNMk1/k7Wvr5HF6l3MMqn9corXrRdH30InJj1ydyOQS4nI3zLyEF XdNxzKyklHjAhI3yp+ChYO0smuXiaYwdAdmQvq5Ln7u7iQ2R0AGy++62x+xjF7HPAera aUeRWJCiP5aq0GfodAGGKOnsmkqypyKfLL3NCwDcGR0okodszhDCFYiZ5ZKhwr8u+06b v02A== X-Gm-Message-State: AOAM531poz8VskWC5pPgvdoH7tNhZd9ldZhMU4CPVN+J4s6DjpAYbniy fbHYE26ljVC47JxUNAQLgR5WyvsU6Wa8YA== X-Google-Smtp-Source: ABdhPJyC1PrGEvvLqGrNBku7nlmRbDcEmp8p+n1RvzmX/dPGnBC4VPLnvPcd41jK3jQ+m36vQ15SFQ== X-Received: by 2002:ac2:4f92:: with SMTP id z18mr1234396lfs.343.1623316186435; Thu, 10 Jun 2021 02:09:46 -0700 (PDT) Received: from box.localdomain ([86.57.175.117]) by smtp.gmail.com with ESMTPSA id v10sm238581lfg.224.2021.06.10.02.09.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Jun 2021 02:09:45 -0700 (PDT) Received: by box.localdomain (Postfix, from userid 1000) id AC8221027EE; Thu, 10 Jun 2021 12:10:01 +0300 (+03) Date: Thu, 10 Jun 2021 12:10:01 +0300 From: "Kirill A. Shutemov" To: Hugh Dickins Cc: Andrew Morton , "Kirill A. Shutemov" , Yang Shi , Wang Yugui , Matthew Wilcox , Alistair Popple , Ralph Campbell , Zi Yan , Peter Xu , Will Deacon , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 04/11] mm: page_vma_mapped_walk(): use pmde for *pvmw->pmd Message-ID: <20210610091001.mbkj7wu3qww474nt@box.shutemov.name> References: <589b358c-febc-c88e-d4c2-7834b37fa7bf@google.com> <53fbc9d-891e-46b2-cb4b-468c3b19238e@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <53fbc9d-891e-46b2-cb4b-468c3b19238e@google.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jun 09, 2021 at 11:40:08PM -0700, Hugh Dickins wrote: > page_vma_mapped_walk() cleanup: re-evaluate pmde after taking lock, then > use it in subsequent tests, instead of repeatedly dereferencing pointer. > > Signed-off-by: Hugh Dickins > Cc: Acked-by: Kirill A. Shutemov -- Kirill A. Shutemov