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 C4518C4332F for ; Fri, 15 Dec 2023 05:07:16 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 3DBA58D0111; Fri, 15 Dec 2023 00:07:16 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 38C058D0103; Fri, 15 Dec 2023 00:07:16 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 206068D0111; Fri, 15 Dec 2023 00:07:16 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id 0CB358D0103 for ; Fri, 15 Dec 2023 00:07:16 -0500 (EST) Received: from smtpin13.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay03.hostedemail.com (Postfix) with ESMTP id E0175A0395 for ; Fri, 15 Dec 2023 05:07:15 +0000 (UTC) X-FDA: 81567868830.13.8EDF853 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.12]) by imf28.hostedemail.com (Postfix) with ESMTP id ECC4AC000E for ; Fri, 15 Dec 2023 05:07:13 +0000 (UTC) Authentication-Results: imf28.hostedemail.com; dkim=pass header.d=intel.com header.s=Intel header.b=DG1fIZHV; dmarc=pass (policy=none) header.from=intel.com; spf=pass (imf28.hostedemail.com: domain of ying.huang@intel.com designates 198.175.65.12 as permitted sender) smtp.mailfrom=ying.huang@intel.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1702616834; h=from:from:sender: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: in-reply-to:in-reply-to:references:references:dkim-signature; bh=WxJdubc9qQ8FgSLZ8Y+a/aPcxdmC6jbCQGiF/n07Xu0=; b=gRbbvEoGIwX5scgmtgpTOTt8y7iYJp3iWnAgmO91BwfMnsEYtROvO/ZkaNL/VMaqFHEM8+ MYH6TiOGFpKmSHo/eoBfcAgtSzcjM7kcfRVYMX0JvOf6XqWrSfc+MWjsETXdIDC6vpRMdf ddCJq9xlOBEUR6q/snKDxvwOfzw3F1s= ARC-Authentication-Results: i=1; imf28.hostedemail.com; dkim=pass header.d=intel.com header.s=Intel header.b=DG1fIZHV; dmarc=pass (policy=none) header.from=intel.com; spf=pass (imf28.hostedemail.com: domain of ying.huang@intel.com designates 198.175.65.12 as permitted sender) smtp.mailfrom=ying.huang@intel.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1702616834; a=rsa-sha256; cv=none; b=z1IduC5aX4QvfY+eLIFPNP2jc6+AmCIB78lxq+W97cWsfeeAPdvowsKGEBKdOJxNdix0Yg ldGtsfnz1RB/VdzfDRCzvKha7ODL9qHNo2WWUxsHIB90sbC4WVqprCH2w4Dyf2vHQzxbjW IbjlyNl+umoImLuwhrSGKbg8tlDxWKo= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1702616834; x=1734152834; h=from:to:cc:subject:in-reply-to:references:date: message-id:mime-version; bh=3e7AMY7QdzXuWquhHAYkwaACFpgpbv91kPnT7khPuGY=; b=DG1fIZHVCBJx0P/SAI5PyHWz1CdlHKdoZMlvnVeQjM5Vu72k033emhJH TACwQmlG8yG/T3Sm0Ha3tAtZpoYklBtqjb534u8nLtvBp6Gi0Af9UKVQz DZc6FGyZS1+4+2qemmmx7yFEvkZZsqXqTwLgBBS8DNQ9Zk7eVb0ayrOnd AI/35B9jcMnnKngbcjj+mvB7edNU6v14kxPbZkYhj18d3bNma8vQzKnd4 j2RdEfy4iQEzdUYy7LQYIICSQhti8zMdw0wm6b8NwMdYAR8MVoBEzafPJ A5nBxsi1ibWR1tInk75jbtbUdqK4YpB+ETdBSyXuC9Sw0rN1KY0Kml9gn Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10924"; a="2398240" X-IronPort-AV: E=Sophos;i="6.04,277,1695711600"; d="scan'208";a="2398240" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orvoesa104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Dec 2023 21:07:13 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10924"; a="803585413" X-IronPort-AV: E=Sophos;i="6.04,277,1695711600"; d="scan'208";a="803585413" Received: from yhuang6-desk2.sh.intel.com (HELO yhuang6-desk2.ccr.corp.intel.com) ([10.238.208.55]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Dec 2023 21:07:09 -0800 From: "Huang, Ying" To: Andrew Morton Cc: Michal Hocko , Minchan Kim , Yosry Ahmed , Liu Shixin , Yu Zhao , Sachin Sant , Johannes Weiner , Kefeng Wang , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Mel Gorman Subject: Re: [PATCH v10] mm: vmscan: try to reclaim swapcache pages if no swap space In-Reply-To: <20231213151341.9ae5fa2bdc266d794a7eed39@linux-foundation.org> (Andrew Morton's message of "Wed, 13 Dec 2023 15:13:41 -0800") References: <87msv58068.fsf@yhuang6-desk2.ccr.corp.intel.com> <87h6l77wl5.fsf@yhuang6-desk2.ccr.corp.intel.com> <87r0ka64v9.fsf@yhuang6-desk2.ccr.corp.intel.com> <20231213151341.9ae5fa2bdc266d794a7eed39@linux-foundation.org> Date: Fri, 15 Dec 2023 13:05:09 +0800 Message-ID: <878r5wqcmy.fsf@yhuang6-desk2.ccr.corp.intel.com> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain; charset=ascii X-Rspam-User: X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: ECC4AC000E X-Stat-Signature: ucubqsuc44zbbsixqx4idxmbosaurfur X-HE-Tag: 1702616833-766938 X-HE-Meta: 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 gKvcDP94 fHdAT6g61efKhlfTG2z23dp/MrB9Mo/32BzbYK0Yy0Y9xiM5T2XUfdx0tS86pMLI/mPX1cdpwuErvCGDgQ+KdQyIxWvSUPDv+FFAyq6hqVsbP7hMkBaut366ZHse6kEKLMAd9rLCEFyu4QJCkWvO5DtnkTxZ/1cSzOxSWdRmY7q3f+kfOAlILAFrITgRVhc0bjJZ/vXK18yB6Src= 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: List-Subscribe: List-Unsubscribe: Andrew Morton writes: > tl;dr, what's the viewpoint on this patch now? > > I have a note here that we're hoping input from Johannes, Vlastimil and > Mel (please). Michal has performance concerns. So, I think that we need to stop scanning anon LRU if don't find enough page in swap cache at the tail of the inactive list. -- Best Regards, Huang, Ying