From nobody Wed Sep 17 10:33:04 2025 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 1A315C10F1D for ; Wed, 21 Dec 2022 18:10:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232763AbiLUSKH (ORCPT ); Wed, 21 Dec 2022 13:10:07 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60084 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229926AbiLUSKA (ORCPT ); Wed, 21 Dec 2022 13:10:00 -0500 Received: from mail-pj1-x102a.google.com (mail-pj1-x102a.google.com [IPv6:2607:f8b0:4864:20::102a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 77DD7252B1 for ; Wed, 21 Dec 2022 10:09:59 -0800 (PST) Received: by mail-pj1-x102a.google.com with SMTP id v23so11292865pju.3 for ; Wed, 21 Dec 2022 10:09:59 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=3PmJb6CIEqNY6rS2poozpptUa/GTiPJRR/qxOS9Vnc0=; b=nkDePdtCIPB0JT+k15LKJQpvT/NCX++WS8dNEXwSceLOrvzJbV5KnFSi/Q69IbR9m3 pz0bbEASdkL5ZdY4gNIep4yTOxDqQn+6P2mNirIanQro8qY4+EtQs7/dTqDX5lFIhZ/n TAj3GOz59idRv9VjUz6+R5EikvGTM60+tFyZa7Efn6m94pwClx9r/IkHOqsvbxOBTehN 2j8mpE/fJEO71UEk6LCm68MCU5C3Szk13jN/lj+xzg73aRLX4FQNK8M1K67QCFEsH8Ww rfmAhg4rTRNPdQSkZ0GXgSLs9nXLKoZKuvw6ULiCzpmc618r3bMtR9tPRASbUks1tuQx uUKw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=3PmJb6CIEqNY6rS2poozpptUa/GTiPJRR/qxOS9Vnc0=; b=Zgzd3TMrTGAC1csYLjRziBZ7Ti0Y4Hv2AR3gioiRasaxyo8B+ZSDa1WApqd/WupfTz UD+6aAi/8SQCBuGJSDzPrxgSxwAQoY9uGMfCygYj4s1DGQ2cD+tiEU6tHWNwUQLbDOwa HlpRnkOCuaDbgxbAGTb3b4h2EuG2CZszQzP6LKLEC4VQUu6Ii/0c0Bdcs5+48K60Sj9A 0ZmboYM4NUCs9ns/e4VIxaf+VJ5RA7b9RG1/aD2uwk7Eirp26PLeIvHYDWpoSRHGaJRP U5ZNHPwoydZQe2zmuwNk20kXFZAQSDNb6uMNFFOeR4IDOj93cuTM/bAgJpk+RvsK46Oa kq5w== X-Gm-Message-State: AFqh2kpT9TMTRkK+XGsqGdUrOvIxfz/nUzjXo5kgBUy4k8wFuSpsWKyP 7EdcOgCYGswjvC6Zla6G+iU= X-Google-Smtp-Source: AMrXdXtca0fMprEg2pyoicfMqzT5In5Towl3radcXSD/IZnbSgXS2K9Z4XEmJtw7RR7DJxDDggCraQ== X-Received: by 2002:a17:90a:fd09:b0:219:c40:e3c with SMTP id cv9-20020a17090afd0900b002190c400e3cmr2632387pjb.33.1671646198887; Wed, 21 Dec 2022 10:09:58 -0800 (PST) Received: from fedora.hsd1.ca.comcast.net ([2601:644:8002:1c20::a55d]) by smtp.googlemail.com with ESMTPSA id e26-20020a63745a000000b00477bfac06b7sm10110732pgn.34.2022.12.21.10.09.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Dec 2022 10:09:58 -0800 (PST) From: "Vishal Moola (Oracle)" To: linux-mm@kvack.org Cc: damon@lists.linux.dev, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, sj@kernel.org, willy@infradead.org, "Vishal Moola (Oracle)" Subject: [PATCH v4 1/4] mm/memory: Add vm_normal_folio() Date: Wed, 21 Dec 2022 10:08:45 -0800 Message-Id: <20221221180848.20774-2-vishal.moola@gmail.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221221180848.20774-1-vishal.moola@gmail.com> References: <20221221180848.20774-1-vishal.moola@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Introduce a wrapper function called vm_normal_folio(). This function calls vm_normal_page() and returns the folio of the page found, or null if no page is found. This function allows callers to get a folio from a pte, which will eventually allow them to completely replace their struct page variables with struct folio instead. Signed-off-by: Vishal Moola (Oracle) Reviewed-by: Matthew Wilcox (Oracle) --- include/linux/mm.h | 2 ++ mm/memory.c | 10 ++++++++++ 2 files changed, 12 insertions(+) diff --git a/include/linux/mm.h b/include/linux/mm.h index ff46dcab2004..d29bfae4b71f 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1968,6 +1968,8 @@ static inline bool can_do_mlock(void) { return false;= } extern int user_shm_lock(size_t, struct ucounts *); extern void user_shm_unlock(size_t, struct ucounts *); =20 +struct folio *vm_normal_folio(struct vm_area_struct *vma, unsigned long ad= dr, + pte_t pte); struct page *vm_normal_page(struct vm_area_struct *vma, unsigned long addr, pte_t pte); struct page *vm_normal_page_pmd(struct vm_area_struct *vma, unsigned long = addr, diff --git a/mm/memory.c b/mm/memory.c index 37d1763c4d47..4000e9f017e0 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -625,6 +625,16 @@ struct page *vm_normal_page(struct vm_area_struct *vma= , unsigned long addr, return pfn_to_page(pfn); } =20 +struct folio *vm_normal_folio(struct vm_area_struct *vma, unsigned long ad= dr, + pte_t pte) +{ + struct page *page =3D vm_normal_page(vma, addr, pte); + + if (page) + return page_folio(page); + return NULL; +} + #ifdef CONFIG_TRANSPARENT_HUGEPAGE struct page *vm_normal_page_pmd(struct vm_area_struct *vma, unsigned long = addr, pmd_t pmd) --=20 2.38.1