Message ID | 20230329011712.3242298-1-zi.yan@sent.com |
---|---|
Headers |
Return-Path: <linux-kernel-owner@vger.kernel.org> Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp90383vqo; Tue, 28 Mar 2023 18:32:33 -0700 (PDT) X-Google-Smtp-Source: AKy350Zxk+Rmi3Rom4BY000X0ezMXbyQjR0NUKynR/IdbWg3sxZ89KH2VqfTZ4s2FPrTG0if0NS/ X-Received: by 2002:a17:903:4d:b0:19c:f8c5:d504 with SMTP id l13-20020a170903004d00b0019cf8c5d504mr14220806pla.59.1680053553660; Tue, 28 Mar 2023 18:32:33 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1680053553; cv=none; d=google.com; s=arc-20160816; b=y1oiMblTFkO3DCQZzlkdgN75L+sCRDnQnUJnP/GNGXuwL2UyoOczlJBU+fq7qQmdAo f/pK/wZuvYvophAqGDp+4Jyuak4f9CWlS6PaXItHm6WYh6tRE0hxkows8rRiUq7or9rN SrCltOTQ+5GPpdqSjDibN60KxyNvbd8E6YpNqMN/uFks3CQU6KhYk3S1qttC7NtZyg9Y mqiSzin1QoFxJ8MgVFr9yDmJfukP49Wn1NVbPZ1J+kVMcOS4TbSqe86Oae12A+mn4XX0 V3ZDlShzAeq5i+dpfI0yZJp9Kyd/6SSO02DRR+TXlM06UwKpAkcZvX+TAi0jYg+V4mD4 U4hg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version:reply-to :message-id:date:subject:cc:to:from:feedback-id:dkim-signature :dkim-signature; bh=JIhj9np4mbbgqAGn5v0t2MJdvOZp0Xk+M5zFinazxgw=; b=O87oF37coO1muReS9qq5wGKhFQnY2C6ui4pvnOUSZGHYuP1Tj3d7GQaMJVm/HsY1bD 8UrbIwol/e2YaFTm+wBgswoAXE5tZ7MLozQ4MShELhJKLTWKgOHiEDBqvDXQlEFWYug0 LN9NTmZtjHp6TK5yNYis+dfHdPPiUGKvaxftfwGHZkEcvFrRJcB9hgSXvfRZLeB1V0Jn QLUDxTAecxEn40ODaSL1OOYUNdsH1HSg5i5rIvMtwbAslX96BlSWSIxIrGEPvV1wiayF lbt02mGNvQbUfqZLlwhqs9TBaCTPqrvKz0yGMLIjUQ/I6s8E/DP8E4s6g7RuL1Cy0g/w S+3A== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@sent.com header.s=fm2 header.b=Y75fKkXM; dkim=pass header.i=@messagingengine.com header.s=fm2 header.b=dnFIZgno; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=sent.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id w13-20020a170902a70d00b00194afb5a3f9si29871983plq.164.2023.03.28.18.32.21; Tue, 28 Mar 2023 18:32:33 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@sent.com header.s=fm2 header.b=Y75fKkXM; dkim=pass header.i=@messagingengine.com header.s=fm2 header.b=dnFIZgno; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=sent.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229717AbjC2BRi (ORCPT <rfc822;rua109.linux@gmail.com> + 99 others); Tue, 28 Mar 2023 21:17:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56284 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229479AbjC2BRg (ORCPT <rfc822;linux-kernel@vger.kernel.org>); Tue, 28 Mar 2023 21:17:36 -0400 Received: from out3-smtp.messagingengine.com (out3-smtp.messagingengine.com [66.111.4.27]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 13C0CC1; Tue, 28 Mar 2023 18:17:35 -0700 (PDT) Received: from compute2.internal (compute2.nyi.internal [10.202.2.46]) by mailout.nyi.internal (Postfix) with ESMTP id 74DA75C00B2; Tue, 28 Mar 2023 21:17:34 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute2.internal (MEProxy); Tue, 28 Mar 2023 21:17:34 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sent.com; h=cc :cc:content-transfer-encoding:content-type:date:date:from:from :in-reply-to:message-id:mime-version:reply-to:reply-to:sender :subject:subject:to:to; s=fm2; t=1680052654; x=1680139054; bh=JI hj9np4mbbgqAGn5v0t2MJdvOZp0Xk+M5zFinazxgw=; b=Y75fKkXMy8AqDoNb1z WUxKUuoEatALeZNXp3NsVv9yNgvzcF4Dwo7X87U2OqlWnb4jarG/ZQrNHEeHulG9 AZEzLYY+mpAqDBUnzhQagPB+bwAua8pZxwUonO26ma6Szwfiv4Lqw2iG2Snj5V6b 3FESEK32JezQ6q6lWR5ZAoT96o+key82qGItVNY2Rcq227zzRdiwq7vHasKZWkEK J3qB5/+O9yYWoiqmk8Af5HV3Ndjq4Z1aASr5haenQJtyZbwJQn76+UANw7qSHWvb XYR9VzwM1iH8TrnhYlCjRusDvSfcRUjXlM1K0TlGBqVrrCRUT3Hv/RAgi0USIlus SNfQ== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding :content-type:date:date:feedback-id:feedback-id:from:from :in-reply-to:message-id:mime-version:reply-to:reply-to:sender :subject:subject:to:to:x-me-proxy:x-me-proxy:x-me-sender :x-me-sender:x-sasl-enc; s=fm2; t=1680052654; x=1680139054; bh=J Ihj9np4mbbgqAGn5v0t2MJdvOZp0Xk+M5zFinazxgw=; b=dnFIZgno8DAeHWb8t QVevHEkRVdHPNRmSjtBeYGtD7S351lY8WeeJN0r6RHnS8mkiBDdUT3HKiszdUXA4 OCI8scZQx+lBJ1c+RCrGPrQEHUDUmo9vNbJ7A7eF3fofFxITUdH27acBpZTCqvBT ERU3A94thqIT7v89E1mBi8iVh3l2X43z2vbZTDk7fVTaWZfB8u826nTmmy23P+sZ L2E8WCaXnxwv1ezA/HWZm6CE7LhQbFVWYEZbH2kXVRztHAUFOGkZrXy/rtbRWHXN /mhVySczaKYMuC92TF7rZD6C6H9g7HE+C8zCWCJFQn7AZ0HAUn7KHd/Ot1FZ+ldQ tXMmA== X-ME-Sender: <xms:rZEjZMZ5Jrs0p1lkakoS2MDEH2VfQBNIr_vFDlJMgNEorC4W7Le9SQ> <xme:rZEjZHbZR3_-a2YSCURdqs8UsOlwX2i0Ag-wpAyzds-eTQIH5qAat8BnIwd0wcaRI fnNSnX3xWsJ7ujpjg> X-ME-Received: <xmr:rZEjZG_zH4MmqFtm_Fggoqpe09TFWvc29jsn-t8_WtKha4f0vgInTck-b30ztdOAXaUM82eO0nrXrkhdKnb7VrcM12up08z4iUN1RkbFDIJewtSnLqEYgkPuHlcB-l4> X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvhedrvdehhedggeehucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhephffvvefufffkofhrggfgsedtqhertdertddtnecuhfhrohhmpegkihcujggr nhcuoeiiihdrhigrnhesshgvnhhtrdgtohhmqeenucggtffrrghtthgvrhhnpedvieeutd ehtddthfegveekueevfedvueehjeeltdevgfejteekudfgvdelveekffenucffohhmrghi nhepkhgvrhhnvghlrdhorhhgnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpe hmrghilhhfrhhomhepiihirdihrghnsehsvghnthdrtghomh X-ME-Proxy: <xmx:rZEjZGrMh3oS_UFkv3r6cVqcOukp3o0jDkoLFtDQ3eUEYZq2oUwNNQ> <xmx:rZEjZHoJdcf4jpQBH-qstnl_CIMv-BTfpspo5GeHMOoPSpBKGsaLPg> <xmx:rZEjZERBtxyTjvuybsCLQpu1rm1Uo-1pV1A_ARFBK8MVv_5RcfHKOQ> <xmx:rpEjZA5_VWnQLhZc5MFkG3fEyMrqf5lrntHluYShpMJ1Z7W-TctMYQ> Feedback-ID: iccd040f4:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Tue, 28 Mar 2023 21:17:33 -0400 (EDT) From: Zi Yan <zi.yan@sent.com> To: "Matthew Wilcox (Oracle)" <willy@infradead.org>, Yang Shi <shy828301@gmail.com>, Yu Zhao <yuzhao@google.com>, linux-mm@kvack.org Cc: Zi Yan <ziy@nvidia.com>, "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>, Ryan Roberts <ryan.roberts@arm.com>, =?utf-8?q?Michal_Koutn=C3=BD?= <mkoutny@suse.com>, Roman Gushchin <roman.gushchin@linux.dev>, "Zach O'Keefe" <zokeefe@google.com>, Andrew Morton <akpm@linux-foundation.org>, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH v2 0/7] Split a folio to any lower order folios Date: Tue, 28 Mar 2023 21:17:05 -0400 Message-Id: <20230329011712.3242298-1-zi.yan@sent.com> X-Mailer: git-send-email 2.39.2 Reply-To: Zi Yan <ziy@nvidia.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Spam-Status: No, score=-0.9 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: <linux-kernel.vger.kernel.org> X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1761663835060563587?= X-GMAIL-MSGID: =?utf-8?q?1761663835060563587?= |
Series |
Split a folio to any lower order folios
|
|
Message
Zi Yan
March 29, 2023, 1:17 a.m. UTC
From: Zi Yan <ziy@nvidia.com>
Hi all,
File folio supports any order and people would like to support flexible orders
for anonymous folio[1] too. Currently, split_huge_page() only splits a huge
page to order-0 pages, but splitting to orders higher than 0 is also useful.
This patchset adds support for splitting a huge page to any lower order pages
and uses it during folio truncate operations.
The patchset is on top of mm-everything-2023-03-27-21-20.
Changelog from v1
===
1. Changed split_page_memcg() and split_page_owner() parameter to use order
2. Used folio_test_pmd_mappable() in place of the equivalent code
Details
===
* Patch 1 changes split_page_memcg() to use order instead of nr_pages
* Patch 2 changes split_page_owner() to use order instead of nr_pages
* Patch 3 and 4 add new_order parameter split_page_memcg() and
split_page_owner() and prepare for upcoming changes.
* Patch 5 adds split_huge_page_to_list_to_order() to split a huge page
to any lower order. The original split_huge_page_to_list() calls
split_huge_page_to_list_to_order() with new_order = 0.
* Patch 6 uses split_huge_page_to_list_to_order() in large pagecache folio
truncation instead of split the large folio all the way down to order-0.
* Patch 7 adds a test API to debugfs and test cases in
split_huge_page_test selftests.
Comments and/or suggestions are welcome.
[1] https://lore.kernel.org/linux-mm/Y%2FblF0GIunm+pRIC@casper.infradead.org/
Zi Yan (7):
mm/memcg: use order instead of nr in split_page_memcg()
mm/page_owner: use order instead of nr in split_page_owner()
mm: memcg: make memcg huge page split support any order split.
mm: page_owner: add support for splitting to any order in split
page_owner.
mm: thp: split huge page to any lower order pages.
mm: truncate: split huge page cache page to a non-zero order if
possible.
mm: huge_memory: enable debugfs to split huge pages to any order.
include/linux/huge_mm.h | 10 +-
include/linux/memcontrol.h | 4 +-
include/linux/page_owner.h | 10 +-
mm/huge_memory.c | 137 ++++++++---
mm/memcontrol.c | 10 +-
mm/page_alloc.c | 8 +-
mm/page_owner.c | 10 +-
mm/truncate.c | 21 +-
.../selftests/mm/split_huge_page_test.c | 225 +++++++++++++++++-
9 files changed, 366 insertions(+), 69 deletions(-)