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 E2438C433EF for ; Tue, 26 Apr 2022 02:02:28 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 5221A6B0073; Mon, 25 Apr 2022 22:02:28 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 4AA936B0074; Mon, 25 Apr 2022 22:02:28 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 323F86B0075; Mon, 25 Apr 2022 22:02:28 -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 1C1506B0073 for ; Mon, 25 Apr 2022 22:02:28 -0400 (EDT) Received: from smtpin20.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id E19D321CE0 for ; Tue, 26 Apr 2022 02:02:27 +0000 (UTC) X-FDA: 79397380734.20.6F229B4 Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by imf28.hostedemail.com (Postfix) with ESMTP id 74488C003B for ; Tue, 26 Apr 2022 02:02:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1650938547; x=1682474547; h=message-id:subject:from:to:cc:date:in-reply-to: references:mime-version:content-transfer-encoding; bh=5pyMy/YoPUtswofxDrGu3rhyiIHVCPMk0ik/b0YSP2k=; b=NJo+rqQQQwtIBoO50DX9aXftUrUCi6VdA+sL/4nCyaDvulvM3npNlodH K1Yzlj8qbzkWRnKtFb5wxdHN/TuPVNvh+setWLeu2f1ANDXCU62jhh4uK 6ugAeMVba0wPWTbbcMGdpV/9YPvrB7XyYIZYByM99K+XpyyR59Xl/FRme 4yKwI2vj2I9X94dZKhACRNW2K0QILYyoFomFiitbLvdq5lwSgIQX78zm3 XkCBodEsuB1jXY9jNz79uUa7iWTNCxhqGI0AlaG42DvG3oma21HwXS6uO GUgHPPYOCV5nADioow5/JCt9lcPBpO/VOPvFusJ4+2hD7SuPvV11BosPR Q==; X-IronPort-AV: E=McAfee;i="6400,9594,10328"; a="264941916" X-IronPort-AV: E=Sophos;i="5.90,289,1643702400"; d="scan'208";a="264941916" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Apr 2022 19:02:23 -0700 X-IronPort-AV: E=Sophos;i="5.90,289,1643702400"; d="scan'208";a="532401701" Received: from mba-mobl1.ccr.corp.intel.com ([10.254.214.60]) by orsmga006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Apr 2022 19:02:20 -0700 Message-ID: <6b74e6f3799032d4f12bae0d97a453dc85d03028.camel@intel.com> Subject: Re: [PATCH v3 3/6] mm/vmscan: activate swap-backed executable folios after first usage From: "ying.huang@intel.com" To: Andrew Morton , Miaohe Lin Cc: iamjoonsoo.kim@lge.com, hch@lst.de, osalvador@suse.de, linux-mm@kvack.org, linux-kernel@vger.kernel.org Date: Tue, 26 Apr 2022 10:02:17 +0800 In-Reply-To: <20220425140711.0c1898862fc817135bbbc56e@linux-foundation.org> References: <20220425111232.23182-1-linmiaohe@huawei.com> <20220425111232.23182-4-linmiaohe@huawei.com> <20220425140711.0c1898862fc817135bbbc56e@linux-foundation.org> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.38.3-1 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 74488C003B X-Stat-Signature: 1x4th1pckpn8daxgnd8h1w6y7drzufdc Authentication-Results: imf28.hostedemail.com; dkim=pass header.d=intel.com header.s=Intel header.b=NJo+rqQQ; dmarc=pass (policy=none) header.from=intel.com; spf=none (imf28.hostedemail.com: domain of ying.huang@intel.com has no SPF policy when checking 134.134.136.24) smtp.mailfrom=ying.huang@intel.com X-Rspam-User: X-HE-Tag: 1650938540-495666 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Mon, 2022-04-25 at 14:07 -0700, Andrew Morton wrote: > On Mon, 25 Apr 2022 19:12:29 +0800 Miaohe Lin wrote: > > > We should activate swap-backed executable folios (e.g. tmpfs) after first > > usage so that executable code gets yet better chance to stay in memory. > > Does this not erase the intended effect of Joonsoo's b518154e59a > ("mm/vmscan: protect the workingset on anonymous LRU")? I don't think so. This is only for executable folios (vm_flags & VM_EXEC). The behavior for all other anonymous pages are not affected. Best Regards, Huang, Ying