From patchwork Wed Mar 29 01:17:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zi Yan X-Patchwork-Id: 13191799 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 4BFD8C761AF for ; Wed, 29 Mar 2023 01:17:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229768AbjC2BRm (ORCPT ); Tue, 28 Mar 2023 21:17:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56378 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229479AbjC2BRj (ORCPT ); Tue, 28 Mar 2023 21:17:39 -0400 Received: from out3-smtp.messagingengine.com (out3-smtp.messagingengine.com [66.111.4.27]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 28546D3; Tue, 28 Mar 2023 18:17:38 -0700 (PDT) Received: from compute5.internal (compute5.nyi.internal [10.202.2.45]) by mailout.nyi.internal (Postfix) with ESMTP id 8B7F55C0045; Tue, 28 Mar 2023 21:17:37 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute5.internal (MEProxy); Tue, 28 Mar 2023 21:17:37 -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= 1680052657; x=1680139057; bh=aUMOD1VSwlpi8SU9QPM0FjnDI83YsOvX8fZ YLAjytoI=; b=iU4MYKvhUukywGLlEKLDX1/HMUmgD5WUDx2430lFmQsZIhey7CK 7JjS1kU6XkWTAoOQySY0cHobbSepGAIj7sJqRg0shuxUR+44r6AfYijMOePSVmDu DQqtqV9U1nPHSYreR1ohCXfx08+8zUUk4VkO1guvg3/16I712KrD7IxqENlmJuVB 3Pw+iNLUhjVEidWtwAgnY+6k+6wY64IS5cwhi2KETMbEoNs+LqE/YC61mXtbosuX mQbcG4K6YMloRXpM7MhLr2L6Nrnv6Zw4H9P3zuS9xfKFh4NA0gFxIozLf4/Q0LM8 anDlvpywXGYBrDSdsc7hdaMA9hqFSWYEG6Q== 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= 1680052657; x=1680139057; bh=aUMOD1VSwlpi8SU9QPM0FjnDI83YsOvX8fZ YLAjytoI=; b=Hg04jMI5y3sqbJL6KV0puzCcXMJARxNuBYPS6DXyJRqHRSi38BA RIQXYJy5djVGBfx+pbu9ZoFt0zLAoA9tr2R8JLVaa6ByVUbM/0MxNAIvTNTopG4U IqpDwFiiNQ5HcqX4arm4qukeaMS0uz8t8qgz7+eoyz2hBNELSlD3LZTsLBD1/y9O P/86PYDBX42C6WQrws1vMnWuHR9JLtUqpmQbLw162AINMkLSCCk2fCzAqV0L6m8u 5SBW+pJxXniU5RcZzhgXL0DvAv8g4gQ946LkSzyZXUx+fDXd9CwKHpFPqnw7WsM9 fC2COPUF0IOLnOu/YPq9aI6zMJ6JNNsuRMw== 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 21:17:36 -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 4/7] mm: page_owner: add support for splitting to any order in split page_owner. Date: Tue, 28 Mar 2023 21:17:09 -0400 Message-Id: <20230329011712.3242298-5-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 It adds a new_order parameter to set new page order in page owner. It prepares for upcoming changes to support split huge page to any lower order. Signed-off-by: Zi Yan --- include/linux/page_owner.h | 10 +++++----- mm/huge_memory.c | 2 +- mm/page_alloc.c | 4 ++-- mm/page_owner.c | 11 ++++++----- 4 files changed, 14 insertions(+), 13 deletions(-) diff --git a/include/linux/page_owner.h b/include/linux/page_owner.h index d7878523adfc..a784ba69f67f 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, int order); +extern void __split_page_owner(struct page *page, int old_order, int new_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, int order) +static inline void split_page_owner(struct page *page, int old_order, int new_order) { if (static_branch_unlikely(&page_owner_inited)) - __split_page_owner(page, order); + __split_page_owner(page, old_order, new_order); } static inline void folio_copy_owner(struct folio *newfolio, struct folio *old) { @@ -56,11 +56,11 @@ static inline void reset_page_owner(struct page *page, unsigned short order) { } static inline void set_page_owner(struct page *page, - unsigned int order, gfp_t gfp_mask) + unsigned short order, gfp_t gfp_mask) { } static inline void split_page_owner(struct page *page, - int order) + int old_order, int new_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 106cde74d933..f8a8a72b207d 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, order); + split_page_owner(head, order, 0); /* See comment in __split_huge_page_tail() */ if (PageAnon(head)) { diff --git a/mm/page_alloc.c b/mm/page_alloc.c index ef559795525b..4845ff6c4223 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, order); + split_page_owner(page, order, 0); split_page_memcg(page, order, 0); } 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, order); + split_page_owner(page, order, 0); split_page_memcg(page, order, 0); while (page < --last) set_page_refcounted(last); diff --git a/mm/page_owner.c b/mm/page_owner.c index 64233b5b09d5..347861fe9c50 100644 --- a/mm/page_owner.c +++ b/mm/page_owner.c @@ -211,20 +211,21 @@ void __set_page_owner_migrate_reason(struct page *page, int reason) page_ext_put(page_ext); } -void __split_page_owner(struct page *page, int order) +void __split_page_owner(struct page *page, int old_order, int new_order) { int i; struct page_ext *page_ext = page_ext_get(page); struct page_owner *page_owner; - unsigned int nr = 1 << order; + unsigned int old_nr = 1 << old_order; + unsigned int new_nr = 1 << new_order; if (unlikely(!page_ext)) return; - for (i = 0; i < nr; i++) { + for (i = 0; i < old_nr; i += new_nr) { + page_ext = lookup_page_ext(page + i); page_owner = get_page_owner(page_ext); - page_owner->order = 0; - page_ext = page_ext_next(page_ext); + page_owner->order = new_order; } page_ext_put(page_ext); }