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 60FFAC43334 for ; Wed, 22 Jun 2022 18:46:36 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id D791C8E00E4; Wed, 22 Jun 2022 14:46:35 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id D020A8E00D8; Wed, 22 Jun 2022 14:46:35 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id BA2718E00E4; Wed, 22 Jun 2022 14:46:35 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0013.hostedemail.com [216.40.44.13]) by kanga.kvack.org (Postfix) with ESMTP id A5A5F8E00D8 for ; Wed, 22 Jun 2022 14:46:35 -0400 (EDT) Received: from smtpin13.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay13.hostedemail.com (Postfix) with ESMTP id 82F9A60548 for ; Wed, 22 Jun 2022 18:46:35 +0000 (UTC) X-FDA: 79606752750.13.974845D Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by imf01.hostedemail.com (Postfix) with ESMTP id EF5E140024 for ; Wed, 22 Jun 2022 18:46:32 +0000 (UTC) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id AF6ACB82012; Wed, 22 Jun 2022 18:46:20 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2207FC34114; Wed, 22 Jun 2022 18:45:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1655923579; bh=0eZSRXhFQsxpMISkzTJNerX5SS+CHCOGlQdtACaMacE=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=YBIZZ3kn7Lk0ak8+PKPYck6NGwGFCY21Pr8DUMaa8WvE7bDchYVJ7coH4+5bTyMmB VxdAANgm3DVc33lNrHxNxpEW/gS5/7kagv/EPg9tQEfGGV0lWa3LOaEEg0W1NBMYLv tCTg6Kkmfe5qS3mHbry8SVDUQcGudXj7cvhNuLwo= Date: Wed, 22 Jun 2022 11:45:52 -0700 From: Andrew Morton To: Yu Zhao Cc: Andi Kleen , Aneesh Kumar , Catalin Marinas , Dave Hansen , Hillf Danton , Jens Axboe , Johannes Weiner , Jonathan Corbet , Linus Torvalds , Matthew Wilcox , Mel Gorman , Michael Larabel , Michal Hocko , Mike Rapoport , Peter Zijlstra , Tejun Heo , Vlastimil Babka , Will Deacon , Linux ARM , "open list:DOCUMENTATION" , linux-kernel , Linux-MM , "the arch/x86 maintainers" , Kernel Page Reclaim v2 Subject: Re: [PATCH v12 00/14] Multi-Gen LRU Framework Message-Id: <20220622114552.d878769ee7e3bc6a5240f430@linux-foundation.org> In-Reply-To: References: <20220614071650.206064-1-yuzhao@google.com> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1655923593; 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:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=icC4Z+7HxqSV9XE4rXGAlv0UN9sak15l2LI54Kg2gGU=; b=XbJfKEm+gX/WHGGryL/bJlnfxiwtlKzf4XFDBCPH/RcDQxoboEHWGc+pfXW6Y9Dq++RTa5 RAHPXzm8vjDGn6fU78MXhHqflCpm0+2N9qR67BdqJg76vNWjWD4cnZURloupMqrjhlSsCc OqpzGDpZslcN1JBCm4laDUKRXQPlvgU= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1655923593; a=rsa-sha256; cv=none; b=ftHX/gOIThpcCyQ5CfdVY1WHCf6Hw64d3+eAa+Vh8S16vgJuGu28s9ywfIkGsVlF99LLK5 kFIe6qIfY7dfhhsb3K2ex35ZHE3r0kO2VISe+ccjyYkX9/+Sf3HJuVo+3+CMD/lJ6pyTFg LF34lcqOPzyOIAq0yzBvizoelD3t72w= ARC-Authentication-Results: i=1; imf01.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=YBIZZ3kn; dmarc=none; spf=pass (imf01.hostedemail.com: domain of akpm@linux-foundation.org designates 145.40.68.75 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org X-Stat-Signature: ehayf4765hhaqqmby8tb1kutszkymchx X-Rspamd-Queue-Id: EF5E140024 Authentication-Results: imf01.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=YBIZZ3kn; dmarc=none; spf=pass (imf01.hostedemail.com: domain of akpm@linux-foundation.org designates 145.40.68.75 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org X-Rspamd-Server: rspam02 X-Rspam-User: X-HE-Tag: 1655923592-711670 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 Wed, 22 Jun 2022 00:21:47 -0600 Yu Zhao wrote: > > TLDR > > ==== > > The current page reclaim is too expensive in terms of CPU usage and it > > often makes poor choices about what to evict. This patchset offers an > > alternative solution that is performant, versatile and > > straightforward. > > I don't see any action items left for me. Are we good for the next merge window? Qi Zheng just found an item ;) Yes, I'd like to get this in soon. I've been waiting for the mapletree work to converge a bit further.