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 DC089C678D4 for ; Wed, 1 Mar 2023 23:29:24 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 594816B0074; Wed, 1 Mar 2023 18:29:24 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 543C56B0075; Wed, 1 Mar 2023 18:29:24 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 40B8F6B0078; Wed, 1 Mar 2023 18:29:24 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id 2F0CC6B0074 for ; Wed, 1 Mar 2023 18:29:24 -0500 (EST) Received: from smtpin07.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay07.hostedemail.com (Postfix) with ESMTP id 002C61607CD for ; Wed, 1 Mar 2023 23:29:23 +0000 (UTC) X-FDA: 80521923006.07.BF98CF7 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by imf04.hostedemail.com (Postfix) with ESMTP id 3A81D40004 for ; Wed, 1 Mar 2023 23:29:20 +0000 (UTC) Authentication-Results: imf04.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=Ye4Pnjrg; spf=pass (imf04.hostedemail.com: domain of chrisl@kernel.org designates 145.40.68.75 as permitted sender) smtp.mailfrom=chrisl@kernel.org; dmarc=pass (policy=none) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1677713361; 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=sK4L0qQOp54ZbhPQQmxpYTqU4ZY36W3NUD378YhO0Z0=; b=CEEcteHKa665RYCesiMw9eG5hONRI/NKT1IX0u+7+eglVfyc21VtlpHnhKEbOispOy42KN VjsHAimVqKPMNGPn8wKUGJ36yiodRX8tNvKfVKdzHIwnw1Wkr065bXiPqZcCtaLGzPmFFq prhOBzWPqltYzhy2BFcN+3fUQW8Mq64= ARC-Authentication-Results: i=1; imf04.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=Ye4Pnjrg; spf=pass (imf04.hostedemail.com: domain of chrisl@kernel.org designates 145.40.68.75 as permitted sender) smtp.mailfrom=chrisl@kernel.org; dmarc=pass (policy=none) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1677713361; a=rsa-sha256; cv=none; b=1CaNykc/e2rzBOSj5wmiY/AhQXeAO938hVo2C3DSHw1pyx8S13yknxtGxLLMKCoFpntutc uvDiuM1n419CeMm32f4JK/Hw2jzr8G9ACgzEQrnfNcowvgkFD5/RivfpYSU6N2cU3nW7mL 1o6b18Hi4RJTr8csbSHAkTr2eNxoLiw= 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 0B0AFB81183; Wed, 1 Mar 2023 23:29:19 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 71F42C433EF; Wed, 1 Mar 2023 23:29:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1677713357; bh=sK4L0qQOp54ZbhPQQmxpYTqU4ZY36W3NUD378YhO0Z0=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Ye4PnjrgXJGCbZce0l/0pcrO/Ww/lXKRGMcB1mymIfr9sZX/oWSh7RQyP7FlMfpFR MzZJseFD+CJDhdxYfvsY9sG6USIsvSKrl/0+BmzMvMyOm86/12ZwHhvYM+1LwO4NTm zB+5YMpSFjban9laoMhKvv0OLr/tzRVZFOgvNdswRaXXB0+xNhh7+553LMnp5kyj3o wx0+3tucf8qY/l96v7NjVArsVXJa/gVHfCspjXfDkzzAVdIH/E+/oQSm2O+M5PwHGp mHmoMqSTDDVLS84vTkdQEGmdZgEeSzFUOMpisGR9OdpNWF3jhJQtR8r8H5L4RzsoEk KU14c3Xd52Ovg== Date: Wed, 1 Mar 2023 15:29:16 -0800 From: Chris Li To: Yu Zhao Cc: lsf-pc@lists.linux-foundation.org, Linux-MM , Yang Shi , Matthew Wilcox , "Yin, Fengwei" , Hugh Dickins , "Kirill A . Shutemov" Subject: Re: [LSF/MM/BPF TOPIC] Flexible orders for anonymous folios Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Stat-Signature: r5o3k5wgsihub57mrj7yoxmndwwcdpyj X-Rspam-User: X-Rspamd-Queue-Id: 3A81D40004 X-Rspamd-Server: rspam06 X-HE-Tag: 1677713360-959109 X-HE-Meta: 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 khP+7+LI tG1knk0pdiQBa0OKVaP1oMnwvDJZt0CA7W4mbPvwURS07MC6/cvc8nPsYJcd0OJpMikLj8PTZK0bT7TrwQsezUpn6faJhdoD72cHW/ZLXp5ZJ1wRiwIDbP7bwijpEX8kIRYkF+8gpr4G5UmoqbLn8+LsT/5e95sJURja8v7aShBfpo/QdCCqQ9EyoIIy8DbyqHCXgdsvDTpr8F/ohpqeFJ0t9ru03WTqAAGHKxrvKmNOQF+qmelWSR+hN27fm5w3NK241q201XsA+bMo3SvXxt25CZn+tEX/d1ywcKQc+Lz8FoHA= 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, Feb 22, 2023 at 04:55:20PM -0700, Yu Zhao wrote: > Discussion points: > 1. The page fault path: determining the best order and the fallback policy. > 2. The reclaim path: detecting the utilization and the splitting policy. > 3. The refcount and the mapcount models, e.g., reuse the PMD-mapped > THP model or not. > 4. The splitting, and the collapsing if needed. > 5. Other paths: COW, GUP, madvise(), mprotect(), page migration, etc. > I am interested in this topic and I would like to partition the discussion as well. Chris