From nobody Tue Feb 10 01:19:15 2026 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 6F913C7EE2A for ; Tue, 6 Jun 2023 06:21:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234319AbjFFGVc (ORCPT ); Tue, 6 Jun 2023 02:21:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32882 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234154AbjFFGVE (ORCPT ); Tue, 6 Jun 2023 02:21:04 -0400 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 580C710DE for ; Mon, 5 Jun 2023 23:20:48 -0700 (PDT) Received: from kwepemm600020.china.huawei.com (unknown [172.30.72.53]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4Qb0dN4mG3zLqVB; Tue, 6 Jun 2023 14:17:44 +0800 (CST) Received: from localhost.localdomain (10.175.112.125) by kwepemm600020.china.huawei.com (7.193.23.147) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.23; Tue, 6 Jun 2023 14:20:45 +0800 From: Peng Zhang To: , , , , , , CC: , , , ZhangPeng Subject: [PATCH v2 3/3] mm/hugetlb: Use a folio in hugetlb_fault() Date: Tue, 6 Jun 2023 14:20:13 +0800 Message-ID: <20230606062013.2947002-4-zhangpeng362@huawei.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230606062013.2947002-1-zhangpeng362@huawei.com> References: <20230606062013.2947002-1-zhangpeng362@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.175.112.125] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To kwepemm600020.china.huawei.com (7.193.23.147) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: ZhangPeng We can replace seven implicit calls to compound_head() with one by using folio. Signed-off-by: ZhangPeng Reviewed-by Sidhartha Kumar Reviewed-by: Matthew Wilcox (Oracle) Reviewed-by: Muchun Song --- mm/hugetlb.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/mm/hugetlb.c b/mm/hugetlb.c index e58f8001fd92..e34329e25abe 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -6062,7 +6062,7 @@ vm_fault_t hugetlb_fault(struct mm_struct *mm, struct= vm_area_struct *vma, vm_fault_t ret; u32 hash; pgoff_t idx; - struct page *page =3D NULL; + struct folio *folio =3D NULL; struct folio *pagecache_folio =3D NULL; struct hstate *h =3D hstate_vma(vma); struct address_space *mapping; @@ -6181,14 +6181,14 @@ vm_fault_t hugetlb_fault(struct mm_struct *mm, stru= ct vm_area_struct *vma, * pagecache_folio, so here we need take the former one * when page !=3D pagecache_folio or !pagecache_folio. */ - page =3D pte_page(entry); - if (page_folio(page) !=3D pagecache_folio) - if (!trylock_page(page)) { + folio =3D page_folio(pte_page(entry)); + if (folio !=3D pagecache_folio) + if (!folio_trylock(folio)) { need_wait_lock =3D 1; goto out_ptl; } =20 - get_page(page); + folio_get(folio); =20 if (flags & (FAULT_FLAG_WRITE|FAULT_FLAG_UNSHARE)) { if (!huge_pte_write(entry)) { @@ -6204,9 +6204,9 @@ vm_fault_t hugetlb_fault(struct mm_struct *mm, struct= vm_area_struct *vma, flags & FAULT_FLAG_WRITE)) update_mmu_cache(vma, haddr, ptep); out_put_page: - if (page_folio(page) !=3D pagecache_folio) - unlock_page(page); - put_page(page); + if (folio !=3D pagecache_folio) + folio_unlock(folio); + folio_put(folio); out_ptl: spin_unlock(ptl); =20 @@ -6225,7 +6225,7 @@ vm_fault_t hugetlb_fault(struct mm_struct *mm, struct= vm_area_struct *vma, * here without taking refcount. */ if (need_wait_lock) - wait_on_page_locked(page); + folio_wait_locked(folio); return ret; } =20 --=20 2.25.1