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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id C476BC433F5 for ; Wed, 27 Apr 2022 04:09:05 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 100D66B0073; Wed, 27 Apr 2022 00:09:05 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 0AFD76B0075; Wed, 27 Apr 2022 00:09:05 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id E92056B0078; Wed, 27 Apr 2022 00:09:04 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (relay.hostedemail.com [64.99.140.27]) by kanga.kvack.org (Postfix) with ESMTP id D9FDD6B0073 for ; Wed, 27 Apr 2022 00:09:04 -0400 (EDT) Received: from smtpin14.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id A543A27F72 for ; Wed, 27 Apr 2022 04:09:04 +0000 (UTC) X-FDA: 79401328608.14.E7D64CE Received: from mail-io1-f52.google.com (mail-io1-f52.google.com [209.85.166.52]) by imf13.hostedemail.com (Postfix) with ESMTP id AA3532004E for ; Wed, 27 Apr 2022 04:08:57 +0000 (UTC) Received: by mail-io1-f52.google.com with SMTP id e194so1321617iof.11 for ; Tue, 26 Apr 2022 21:09:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=6f36O0QfVX8IlBdQOhsxrWReQb4S+7f88KwV9S0It40=; b=N6qGDC7jTI3ZHySeAbNs7R5B/unxbGHaxK9xCAThCqyyXgNe+ys/iA048vxOUTamBv Z7dVtuJ9cCCrTAQJlQUbZnyZIrIhAlMsXuxy7l1F5zV7uvUpbeNu1ldgBkrJb9CYXlbE KQVix72qIhbZWrQ0VQB7MUOUFEHk4GwOmjJF6qHx9AkVhP71xhp6tRfZZWKy0H2pE0V6 ENghb21FD04Z4mMOXb/fWGEeKUDR8PdQ4Siyx42smwFTSFi+7G+X3GPcXhvWgOPSfsrM j1SKgz/8EJ6dponGeqhfEtMjXyGb7w7485Y/7iZac0Pw7oKKm+H9vYTbvwyN/dK0Ul1Z QReg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=6f36O0QfVX8IlBdQOhsxrWReQb4S+7f88KwV9S0It40=; b=CIjTq9NwzdzMX31zw88VHxpoHUK+0FWF+inUVfjLA0a+c7J70Pq33/rJX9m2gPSfvq jIsgDQZopX7ZEalKdJuNTAvNkGqESmoOysRAchdipRqH5VQrYoeV+ARfkYrAYQy2MwAy iem3akz/PadypnG7uQkwjh3qd+nfzvjR7SVvcbJwbVgnRhcCjeS0wS0PxW5dzy/FBeLn dJpU7ivBfVWz7rxjNiq2tWGB8P872HY0AK2gxZzTbYpNWbu4rBFFnaGxazQnB3DhMFnh 3CeFbQEstTsKZOG8AiUmUUG9OTbVo7S6Ag4ozkKoB0wqhm8zpKQ6F70aOajCEp8+N1bB g4dg== X-Gm-Message-State: AOAM533EE+18eE4+I/kPmkGrtXdJIIRDXQ3jYerh0CXqLaQpW24f6bJb Ie3pHZV4PRHujy+nEz72YAqWDi2dZHqkPPd6ZZ8= X-Google-Smtp-Source: ABdhPJziikf+Dc+EUmvR67PeUKxcfPVaZH9t3OpvHJrqgH9YgQp6zkLEP8chzKQzRODK8F5LkUlMB10dFWiv8nSzmHs= X-Received: by 2002:a05:6602:398b:b0:657:ab5a:ce2a with SMTP id bw11-20020a056602398b00b00657ab5ace2amr2222241iob.78.1651032543590; Tue, 26 Apr 2022 21:09:03 -0700 (PDT) MIME-Version: 1.0 References: <20220425111232.23182-1-linmiaohe@huawei.com> <20220425111232.23182-4-linmiaohe@huawei.com> <20220425140711.0c1898862fc817135bbbc56e@linux-foundation.org> <6b74e6f3799032d4f12bae0d97a453dc85d03028.camel@intel.com> <5a108252-4eb8-e353-da3d-a96b8799fadf@huawei.com> In-Reply-To: <5a108252-4eb8-e353-da3d-a96b8799fadf@huawei.com> From: Joonsoo Kim Date: Wed, 27 Apr 2022 13:08:52 +0900 Message-ID: Subject: Re: [PATCH v3 3/6] mm/vmscan: activate swap-backed executable folios after first usage To: Miaohe Lin Cc: "ying.huang@intel.com" , Andrew Morton , Joonsoo Kim , Christoph Hellwig , Oscar Salvador , Linux Memory Management List , LKML Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: AA3532004E Authentication-Results: imf13.hostedemail.com; dkim=pass header.d=gmail.com header.s=20210112 header.b=N6qGDC7j; spf=pass (imf13.hostedemail.com: domain of js1304@gmail.com designates 209.85.166.52 as permitted sender) smtp.mailfrom=js1304@gmail.com; dmarc=pass (policy=none) header.from=gmail.com X-Rspam-User: X-Stat-Signature: nk8wjkxdu9ds8tg543f3ybdu4syhjtg3 X-HE-Tag: 1651032537-271855 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000001, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hello, 2022=EB=85=84 4=EC=9B=94 26=EC=9D=BC (=ED=99=94) =EC=98=A4=ED=9B=84 3:58, M= iaohe Lin =EB=8B=98=EC=9D=B4 =EC=9E=91=EC=84=B1: > > On 2022/4/26 10:02, ying.huang@intel.com wrote: > > On Mon, 2022-04-25 at 14:07 -0700, Andrew Morton wrote: > >> On Mon, 25 Apr 2022 19:12:29 +0800 Miaohe Lin w= rote: > >> > >>> We should activate swap-backed executable folios (e.g. tmpfs) after f= irst > >>> usage so that executable code gets yet better chance to stay in memor= y. Missing activation for swap-backed executable page is the intended operatio= n. So, I disagree with this patch until some numbers are provided. See following discussion. https://lore.kernel.org/all/20200316161208.GB67986@cmpxchg.org/T/#u Thanks.