From patchwork Wed Mar 29 01:17:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zi Yan X-Patchwork-Id: 13191798 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9611EC77B71 for ; Wed, 29 Mar 2023 01:17:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229757AbjC2BRl (ORCPT ); Tue, 28 Mar 2023 21:17:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56316 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229694AbjC2BRh (ORCPT ); Tue, 28 Mar 2023 21:17:37 -0400 Received: from out3-smtp.messagingengine.com (out3-smtp.messagingengine.com [66.111.4.27]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9C97599; Tue, 28 Mar 2023 18:17:36 -0700 (PDT) Received: from compute2.internal (compute2.nyi.internal [10.202.2.46]) by mailout.nyi.internal (Postfix) with ESMTP id 1101F5C00C6; Tue, 28 Mar 2023 21:17:36 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute2.internal (MEProxy); Tue, 28 Mar 2023 21:17:36 -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:in-reply-to:message-id:mime-version:references :reply-to:reply-to:sender:subject:subject:to:to; s=fm2; t= 1680052656; x=1680139056; bh=0+1ccQx8AuLgSqfkQ9qAEQMi/lCcYIby1X8 SrOj7vms=; b=qzeTA3YGawR5Npj6RnXbK8iNDVcqZsg+UaqOP3JpEgiuEGN7QGF S69PaEPBeYscqfIWj2k4hLG+ymAsE0dwAxOw9Mza3YioK2zpdTZPT/r2AeRGBrdo 1kBpkqNu++ropyPnhe2HIfyWbWiwMHPlYLNBet2L/wkgh1mwWIm9fYWmjOoKEYb/ R5HklkL4YnDOoadWQ0RCvCfXoYdUQ4CTzUZoasZ7d0dVelrKN7DB5q6UbvJ5u4+S 7JAgW2cQwRKU0s5fwm2Q4qr10Q28th89fRrxP98gPycYNleqFSa1ISKGkhues90S vsSnHxW26wSUxLaGZiDGCsNfikWsw5KMuHg== 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:in-reply-to:message-id:mime-version:references :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= 1680052656; x=1680139056; bh=0+1ccQx8AuLgSqfkQ9qAEQMi/lCcYIby1X8 SrOj7vms=; b=DfFURRi2cTfE0c9CmH4Sa/MZGtlmXfs/BdaDyy+0eKhfQMKK4k+ Gqd5fJX509/FMF+LPHtOz8swWthx3cUvAHignbSHc4aeSsex4j+Z3P/eQAWUW+Jx htj2L5OCj7uH5EJwuWelYeGJ59GxkDmSEE9elQKbFKRKNY10zTGdfoGglR003vEE wiVn2Z0zSuWAvFtDel78cHeL37FRh2Cl24gnf89YBaw5sOhQ/PUOuBsUM7FKXiW5 ix/cZUkPRlXTDClXD2ElcTYYZS+wJDiNrnmW7Eaozo8zOHChG03i91bX4sVekajN neLxtXdWBtuUWOJQz4vPDJWc01xryJx5MfA== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvhedrvdehhedggeehucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhephffvvefufffkofgjfhhrggfgsedtqhertdertddtnecuhfhrohhmpegkihcu jggrnhcuoeiiihdrhigrnhesshgvnhhtrdgtohhmqeenucggtffrrghtthgvrhhnpeegge ehudfgudduvdelheehteegledtteeiveeuhfffveekhfevueefieeijeegvdenucevlhhu shhtvghrufhiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhrohhmpeiiihdrhigrnhessh gvnhhtrdgtohhm X-ME-Proxy: Feedback-ID: iccd040f4:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Tue, 28 Mar 2023 21:17:35 -0400 (EDT) From: Zi Yan To: "Matthew Wilcox (Oracle)" , Yang Shi , Yu Zhao , linux-mm@kvack.org Cc: Zi Yan , "Kirill A . Shutemov" , Ryan Roberts , =?utf-8?q?Michal_Koutn=C3=BD?= , Roman Gushchin , "Zach O'Keefe" , Andrew Morton , linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH v2 2/7] mm/page_owner: use order instead of nr in split_page_owner() Date: Tue, 28 Mar 2023 21:17:07 -0400 Message-Id: <20230329011712.3242298-3-zi.yan@sent.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230329011712.3242298-1-zi.yan@sent.com> References: <20230329011712.3242298-1-zi.yan@sent.com> Reply-To: Zi Yan MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org From: Zi Yan We do not have non power of two pages, using nr is error prone if nr is not power-of-two. Use page order instead. Signed-off-by: Zi Yan --- include/linux/page_owner.h | 8 ++++---- mm/huge_memory.c | 2 +- mm/page_alloc.c | 4 ++-- mm/page_owner.c | 3 ++- 4 files changed, 9 insertions(+), 8 deletions(-) diff --git a/include/linux/page_owner.h b/include/linux/page_owner.h index 119a0c9d2a8b..d7878523adfc 100644 --- a/include/linux/page_owner.h +++ b/include/linux/page_owner.h @@ -11,7 +11,7 @@ extern struct page_ext_operations page_owner_ops; extern void __reset_page_owner(struct page *page, unsigned short order); extern void __set_page_owner(struct page *page, unsigned short order, gfp_t gfp_mask); -extern void __split_page_owner(struct page *page, unsigned int nr); +extern void __split_page_owner(struct page *page, int order); extern void __folio_copy_owner(struct folio *newfolio, struct folio *old); extern void __set_page_owner_migrate_reason(struct page *page, int reason); extern void __dump_page_owner(const struct page *page); @@ -31,10 +31,10 @@ static inline void set_page_owner(struct page *page, __set_page_owner(page, order, gfp_mask); } -static inline void split_page_owner(struct page *page, unsigned int nr) +static inline void split_page_owner(struct page *page, int order) { if (static_branch_unlikely(&page_owner_inited)) - __split_page_owner(page, nr); + __split_page_owner(page, order); } static inline void folio_copy_owner(struct folio *newfolio, struct folio *old) { @@ -60,7 +60,7 @@ static inline void set_page_owner(struct page *page, { } static inline void split_page_owner(struct page *page, - unsigned short order) + int order) { } static inline void folio_copy_owner(struct folio *newfolio, struct folio *folio) diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 3bb003eb80a3..a21921c90b21 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -2557,7 +2557,7 @@ static void __split_huge_page(struct page *page, struct list_head *list, unlock_page_lruvec(lruvec); /* Caller disabled irqs, so they are still disabled here */ - split_page_owner(head, nr); + split_page_owner(head, order); /* See comment in __split_huge_page_tail() */ if (PageAnon(head)) { diff --git a/mm/page_alloc.c b/mm/page_alloc.c index d84b121d1e03..d537828bc4be 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2780,7 +2780,7 @@ void split_page(struct page *page, unsigned int order) for (i = 1; i < (1 << order); i++) set_page_refcounted(page + i); - split_page_owner(page, 1 << order); + split_page_owner(page, order); split_page_memcg(page, order); } EXPORT_SYMBOL_GPL(split_page); @@ -4996,7 +4996,7 @@ static void *make_alloc_exact(unsigned long addr, unsigned int order, struct page *page = virt_to_page((void *)addr); struct page *last = page + nr; - split_page_owner(page, 1 << order); + split_page_owner(page, order); split_page_memcg(page, order); while (page < --last) set_page_refcounted(last); diff --git a/mm/page_owner.c b/mm/page_owner.c index 31169b3e7f06..64233b5b09d5 100644 --- a/mm/page_owner.c +++ b/mm/page_owner.c @@ -211,11 +211,12 @@ void __set_page_owner_migrate_reason(struct page *page, int reason) page_ext_put(page_ext); } -void __split_page_owner(struct page *page, unsigned int nr) +void __split_page_owner(struct page *page, int order) { int i; struct page_ext *page_ext = page_ext_get(page); struct page_owner *page_owner; + unsigned int nr = 1 << order; if (unlikely(!page_ext)) return;