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=-5.2 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 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 21C17C282DD for ; Fri, 10 Jan 2020 23:50:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E45B62082E for ; Fri, 10 Jan 2020 23:50:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=shutemov-name.20150623.gappssmtp.com header.i=@shutemov-name.20150623.gappssmtp.com header.b="S8msUfuL" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727768AbgAJXuu (ORCPT ); Fri, 10 Jan 2020 18:50:50 -0500 Received: from mail-lf1-f68.google.com ([209.85.167.68]:36651 "EHLO mail-lf1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727725AbgAJXuu (ORCPT ); Fri, 10 Jan 2020 18:50:50 -0500 Received: by mail-lf1-f68.google.com with SMTP id n12so2757660lfe.3 for ; Fri, 10 Jan 2020 15:50:49 -0800 (PST) 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:user-agent; bh=Up/bORiVZCe+ht9daj4eKUM5Ea1UCapj6K9HW34R5ns=; b=S8msUfuLnxCHM8bT1qJiytka17qVyY8ZVrWgxMyflSfHUuBij6STEkbxfermPfL//+ KtGfqQG87GiX2DcSRsaXoTWWzuXOCzOcviF1bjh+KZNEo2KJEl6UbQRpQlOEAN4aTdOO 9uB6zwuq5WETS6YN8IQs41xzn3cXA68pp6ziVrH9amHmxk0w+18NMpJzyZSGRThntIb5 nMzW7a7PoyU1hLUViTeMhRFkxjIuhpltULvEbquK97BB0Jb8/asISY0Zy9ZH2Ufpi7hW bAOfeTBm/G60sQxK4vTgBgyzWA1QInLlOptAdelRKnosGPeIDPVm7LALVXA7bBfJzxaf wjDg== 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:user-agent; bh=Up/bORiVZCe+ht9daj4eKUM5Ea1UCapj6K9HW34R5ns=; b=fiKpiB0dqEpm+b9+8Xx0j+BNBOmwp720q3+xrD1k69mMOG2qGNHhKDto/gbc/Z/cuv nSzm75ozaj5Tj1iR+g5iDbEybacH4H9UpRPfZ9soKD+ufhR4+UoJoqAw8vy96PVGtsyc XKRSJUXmD64U8hlj6spUMnlvlgWmMAls0sR6ktoxR0PKSBCOAI7cNJcpzj9FdDVlzvYG Dx3IE241Pok1fVHmGYjn240cqkzSlFDgxdOw2xN1OVfb/6JaLbeisjd3XpBxHoJDtyxA 8ct+ZtBIpS5tupjV6pQbSZDPDn/ELBGJNQ6NXCXUh54D1cqjJoADDGgJ6nBU0d/4MIJ/ I8/Q== X-Gm-Message-State: APjAAAWmrjNjBbzCgN+zArKpKcx841If7sZtDAv3/kNgNGMgFHfy1Edt mAFlPpjS5hrG3YtjJePbWxn8gA== X-Google-Smtp-Source: APXvYqws4IPaym9XaoOdclFEODCMjxAzsLLkrqIrxCIiTw1AkyjTotz1ggJalhM7dmrxCBCmHHeYKQ== X-Received: by 2002:ac2:5e78:: with SMTP id a24mr3889435lfr.5.1578700248713; Fri, 10 Jan 2020 15:50:48 -0800 (PST) Received: from box.localdomain ([86.57.175.117]) by smtp.gmail.com with ESMTPSA id b20sm1642796ljp.20.2020.01.10.15.50.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 10 Jan 2020 15:50:48 -0800 (PST) Received: by box.localdomain (Postfix, from userid 1000) id 1E47A10144E; Sat, 11 Jan 2020 02:50:49 +0300 (+03) Date: Sat, 11 Jan 2020 02:50:49 +0300 From: "Kirill A. Shutemov" To: Wei Yang Cc: akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, kirill.shutemov@linux.intel.com Subject: Re: [PATCH 1/2] mm/huge_memory.c: use head to check huge zero page Message-ID: <20200110235049.kzvcm46t6e2mw4uf@box> References: <20200110032610.26499-1-richardw.yang@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200110032610.26499-1-richardw.yang@linux.intel.com> User-Agent: NeoMutt/20180716 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jan 10, 2020 at 11:26:09AM +0800, Wei Yang wrote: > The page could be a tail page, if this is the case, this BUG_ON will > never be triggered. > > Fixes: e9b61f19858a ("thp: reintroduce split_huge_page()") > > Signed-off-by: Wei Yang Acked-by: Kirill A. Shutemov -- Kirill A. Shutemov