From nobody Wed Dec 31 14:28:02 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 40E68C001B0 for ; Fri, 3 Nov 2023 07:29:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346163AbjKCH3Z (ORCPT ); Fri, 3 Nov 2023 03:29:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48424 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233105AbjKCH3P (ORCPT ); Fri, 3 Nov 2023 03:29:15 -0400 Received: from szxga03-in.huawei.com (szxga03-in.huawei.com [45.249.212.189]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 649EAD43; Fri, 3 Nov 2023 00:29:12 -0700 (PDT) Received: from dggpemm100001.china.huawei.com (unknown [172.30.72.57]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4SMC1W2j3lzMmLh; Fri, 3 Nov 2023 15:24:47 +0800 (CST) Received: from localhost.localdomain (10.175.112.125) by dggpemm100001.china.huawei.com (7.185.36.93) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.31; Fri, 3 Nov 2023 15:29:09 +0800 From: Kefeng Wang To: Andrew Morton CC: , , , Matthew Wilcox , David Hildenbrand , Kefeng Wang Subject: [PATCH 3/5] mm: task_mmu: use a folio in clear_refs_pte_range() Date: Fri, 3 Nov 2023 15:29:04 +0800 Message-ID: <20231103072906.2000381-4-wangkefeng.wang@huawei.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20231103072906.2000381-1-wangkefeng.wang@huawei.com> References: <20231103072906.2000381-1-wangkefeng.wang@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.175.112.125] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To dggpemm100001.china.huawei.com (7.185.36.93) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Use a folio to save two compound_head() calls in clear_refs_pte_range(). Signed-off-by: Kefeng Wang --- fs/proc/task_mmu.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 5ec06fee1f14..869f6bb89230 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -1161,7 +1161,7 @@ static int clear_refs_pte_range(pmd_t *pmd, unsigned = long addr, struct vm_area_struct *vma =3D walk->vma; pte_t *pte, ptent; spinlock_t *ptl; - struct page *page; + struct folio *folio; =20 ptl =3D pmd_trans_huge_lock(pmd, vma); if (ptl) { @@ -1173,12 +1173,12 @@ static int clear_refs_pte_range(pmd_t *pmd, unsigne= d long addr, if (!pmd_present(*pmd)) goto out; =20 - page =3D pmd_page(*pmd); + folio =3D page_folio(pmd_page(*pmd)); =20 /* Clear accessed and referenced bits. */ pmdp_test_and_clear_young(vma, addr, pmd); - test_and_clear_page_young(page); - ClearPageReferenced(page); + folio_test_clear_young(folio); + folio_clear_referenced(folio); out: spin_unlock(ptl); return 0; @@ -1200,14 +1200,14 @@ static int clear_refs_pte_range(pmd_t *pmd, unsigne= d long addr, if (!pte_present(ptent)) continue; =20 - page =3D vm_normal_page(vma, addr, ptent); - if (!page) + folio =3D vm_normal_folio(vma, addr, ptent); + if (!folio) continue; =20 /* Clear accessed and referenced bits. */ ptep_test_and_clear_young(vma, addr, pte); - test_and_clear_page_young(page); - ClearPageReferenced(page); + folio_test_clear_young(folio); + folio_clear_referenced(folio); } pte_unmap_unlock(pte - 1, ptl); cond_resched(); --=20 2.27.0