From nobody Fri Feb 13 12:30:14 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 1238AE81807 for ; Tue, 26 Sep 2023 00:53:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233476AbjIZAxk (ORCPT ); Mon, 25 Sep 2023 20:53:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54798 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232566AbjIZAxU (ORCPT ); Mon, 25 Sep 2023 20:53:20 -0400 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 18705109 for ; Mon, 25 Sep 2023 17:53:14 -0700 (PDT) Received: from dggpemm100001.china.huawei.com (unknown [172.30.72.55]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4Rvh2C6FzGztT3x; Tue, 26 Sep 2023 08:48:51 +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; Tue, 26 Sep 2023 08:53:11 +0800 From: Kefeng Wang To: Andrew Morton CC: Mike Rapoport , Matthew Wilcox , David Hildenbrand , , , , Zi Yan , Kefeng Wang Subject: [PATCH -next 8/9] mm: page_alloc: use a folio in free_pages_prepare() Date: Tue, 26 Sep 2023 08:52:53 +0800 Message-ID: <20230926005254.2861577-9-wangkefeng.wang@huawei.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20230926005254.2861577-1-wangkefeng.wang@huawei.com> References: <20230926005254.2861577-1-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" The page should not a tail page in free_pages_prepare(), let's use a folio in free_pages_prepare() to save several compound_head() calls. Signed-off-by: Kefeng Wang --- mm/page_alloc.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 06be8821d833..a888b9d57751 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1070,6 +1070,7 @@ static __always_inline bool free_pages_prepare(struct= page *page, unsigned int order, fpi_t fpi_flags) { int bad =3D 0; + struct folio *folio =3D page_folio(page); bool skip_kasan_poison =3D should_skip_kasan_poison(page, fpi_flags); bool init =3D want_init_on_free(); =20 @@ -1078,12 +1079,12 @@ static __always_inline bool free_pages_prepare(stru= ct page *page, trace_mm_page_free(page, order); kmsan_free_page(page, order); =20 - if (unlikely(PageHWPoison(page)) && !order) { + if (unlikely(folio_test_hwpoison(folio)) && !order) { /* * Do not let hwpoison pages hit pcplists/buddy * Untie memcg state and reset page's owner */ - if (memcg_kmem_online() && PageMemcgKmem(page)) + if (memcg_kmem_online() && folio_memcg_kmem(folio)) __memcg_kmem_uncharge_page(page, order); reset_page_owner(page, order); page_table_check_free(page, order); @@ -1095,10 +1096,10 @@ static __always_inline bool free_pages_prepare(stru= ct page *page, * avoid checking PageCompound for order-0 pages. */ if (unlikely(order)) { - bool compound =3D PageCompound(page); + bool compound =3D folio_test_large(folio); int i; =20 - VM_BUG_ON_PAGE(compound && compound_order(page) !=3D order, page); + VM_BUG_ON_FOLIO(compound && folio_order(folio) !=3D order, folio); =20 if (compound) page[1].flags &=3D ~PAGE_FLAGS_SECOND; @@ -1114,9 +1115,9 @@ static __always_inline bool free_pages_prepare(struct= page *page, (page + i)->flags &=3D ~PAGE_FLAGS_CHECK_AT_PREP; } } - if (PageMappingFlags(page)) + if (folio_mapping_flags(folio)) page->mapping =3D NULL; - if (memcg_kmem_online() && PageMemcgKmem(page)) + if (memcg_kmem_online() && folio_memcg_kmem(folio)) __memcg_kmem_uncharge_page(page, order); if (is_check_pages_enabled()) { if (free_page_is_bad(page)) @@ -1130,7 +1131,7 @@ static __always_inline bool free_pages_prepare(struct= page *page, reset_page_owner(page, order); page_table_check_free(page, order); =20 - if (!PageHighMem(page)) { + if (!folio_test_highmem(folio)) { debug_check_no_locks_freed(page_address(page), PAGE_SIZE << order); debug_check_no_obj_freed(page_address(page), --=20 2.27.0