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 D70A1C433FE for ; Wed, 2 Nov 2022 09:18:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231519AbiKBJSU (ORCPT ); Wed, 2 Nov 2022 05:18:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47732 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231387AbiKBJSC (ORCPT ); Wed, 2 Nov 2022 05:18:02 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9D08B29374 for ; Wed, 2 Nov 2022 02:15:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1667380520; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=jSXLOldyONaY9cgEaRNbBHRAqu0Rs7Nl/7vgOG7kHn8=; b=OvCzHDNq81nOx2xQl2oVvvy29EaPkgcFh3+Ozt0aLT6tyAPEtvxFsGVg/GFlHWo144VyJo Z8ov3Np6fvzZjklstcJLGg0EBnE5Ev+n4Z/7Zdqmck+OQ9X9tiGVv3cbOEeKF+pHmz0fZd gPg/ZUFPxgblcc6TTVeoXpnHDL26/pc= Received: from mail-wr1-f69.google.com (mail-wr1-f69.google.com [209.85.221.69]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_128_GCM_SHA256) id us-mta-326-4-HQS9-nPCSA0ZmLMuDu5w-1; Wed, 02 Nov 2022 05:15:19 -0400 X-MC-Unique: 4-HQS9-nPCSA0ZmLMuDu5w-1 Received: by mail-wr1-f69.google.com with SMTP id s11-20020adfbc0b000000b0023659af24a8so4628920wrg.14 for ; Wed, 02 Nov 2022 02:15:19 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:in-reply-to:organization:from:references :cc:to:content-language:subject:user-agent:mime-version:date :message-id:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=jSXLOldyONaY9cgEaRNbBHRAqu0Rs7Nl/7vgOG7kHn8=; b=pdPW5BKTGvRthqo7ZO035j/G6Z3z/x4U1AxVRUdlk5OayXir2H3fqhnU9XbBv+IHLX Zed11Zz51RLpEArvtXi5g5DQJFEmQUh0I1lx8NcUSoKXNwopgDsC6g11VidH8EhT7rbE pRQOe5c9KW8w/yWB+kwz7w0xelNwxFQZZkmPROmAUBCZTtOkzwdthspDLDjTGXvfjkSs mYi+lBI2duaRmyN7c8N1qGI3d+b9WQVBfFp7duVi4VltFic4/wyVF8o8grnPjOhPg6gE IjuKx/3dGigxvtl2cAlxZWMltaDghDLOIfgZU2073saWNy/z012cjbqh184ofN3Vjsh0 chtg== X-Gm-Message-State: ACrzQf3uVdtdksJylL+QumTebk/mDKDenw4slA1rfJfdYm03d0fOpXtJ XHdGhfIZJo2A6SYs0fq1hLJjfelT3sAnzUU3cj4VYx0TINYWwltmSzGbjPDmYf6FJgiU/J2BD69 fYmN4Euah3xzvadEDFi+7SXqs X-Received: by 2002:a5d:5711:0:b0:236:598d:83ed with SMTP id a17-20020a5d5711000000b00236598d83edmr15064122wrv.190.1667380518043; Wed, 02 Nov 2022 02:15:18 -0700 (PDT) X-Google-Smtp-Source: AMsMyM4NLqhgOBH5rAwKqrA++LABLCwVsBqlTSy014nXaNbwCsf7Tiv8YjUWY90ar+xjYkYcX/LddA== X-Received: by 2002:a5d:5711:0:b0:236:598d:83ed with SMTP id a17-20020a5d5711000000b00236598d83edmr15064095wrv.190.1667380517747; Wed, 02 Nov 2022 02:15:17 -0700 (PDT) Received: from ?IPV6:2003:cb:c705:f100:af38:1d1f:66f4:48c7? (p200300cbc705f100af381d1f66f448c7.dip0.t-ipconnect.de. [2003:cb:c705:f100:af38:1d1f:66f4:48c7]) by smtp.gmail.com with ESMTPSA id bd26-20020a05600c1f1a00b003cf6c2f9513sm1462650wmb.2.2022.11.02.02.15.16 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 02 Nov 2022 02:15:17 -0700 (PDT) Message-ID: Date: Wed, 2 Nov 2022 10:15:15 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.4.0 Subject: Re: [PATCH 1/2] mm: Always compile in pte markers Content-Language: en-US To: Peter Xu , linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: Andrew Morton , Miaohe Lin , Huang Ying , HORIGUCHI NAOYA , Andrea Arcangeli References: <20221030214151.402274-1-peterx@redhat.com> <20221030214151.402274-2-peterx@redhat.com> From: David Hildenbrand Organization: Red Hat In-Reply-To: <20221030214151.402274-2-peterx@redhat.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 30.10.22 22:41, Peter Xu wrote: > The PTE markers code is tiny and now it's enabled for most of the > distributions. It's fine to keep it as-is, but to make a broader use of > it (e.g. replacing read error swap entry) it needs to be there always > otherwise we need special code path to take care of !PTE_MARKER case. > > It'll be easier just make pte marker always exist. Use this chance to > extend its usage to anonymous too by simply touching up some of the old > comments, because it'll be used for anonymous pages in the follow up > patches. > > Reviewed-by: Huang Ying > Reviewed-by: Miaohe Lin > Signed-off-by: Peter Xu Acked-by: David Hildenbrand -- Thanks, David / dhildenb