From nobody Fri Jan 2 17:25:03 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 8B0B4CD68F1 for ; Tue, 10 Oct 2023 06:47:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1442311AbjJJGrN (ORCPT ); Tue, 10 Oct 2023 02:47:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59500 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1442242AbjJJGrJ (ORCPT ); Tue, 10 Oct 2023 02:47:09 -0400 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B91819D for ; Mon, 9 Oct 2023 23:47:07 -0700 (PDT) Received: from dggpemm100001.china.huawei.com (unknown [172.30.72.54]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4S4RDZ0Y2gzNnmZ; Tue, 10 Oct 2023 14:43:10 +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, 10 Oct 2023 14:47:05 +0800 From: Kefeng Wang To: Andrew Morton CC: , , , , , Zi Yan , Kefeng Wang Subject: [PATCH -next 1/7] mm_types: add _last_cpupid into folio Date: Tue, 10 Oct 2023 14:45:38 +0800 Message-ID: <20231010064544.4162286-2-wangkefeng.wang@huawei.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20231010064544.4162286-1-wangkefeng.wang@huawei.com> References: <20231010064544.4162286-1-wangkefeng.wang@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.175.112.125] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) 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" At present, only arc/sparc/m68k define WANT_PAGE_VIRTUAL, both of them don't support numa balancing, and the page struct is aligned to _struct_page_alignment, it is safe to move _last_cpupid before 'virtual' in page, meanwhile, add it into folio, which make us to use folio->_last_cpupid directly. Signed-off-by: Kefeng Wang --- include/linux/mm_types.h | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 36c5b43999e6..32af41160109 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -183,6 +183,9 @@ struct page { #ifdef CONFIG_MEMCG unsigned long memcg_data; #endif +#ifdef LAST_CPUPID_NOT_IN_PAGE_FLAGS + int _last_cpupid; +#endif =20 /* * On machines where all RAM is mapped into kernel address space, @@ -210,10 +213,6 @@ struct page { struct page *kmsan_shadow; struct page *kmsan_origin; #endif - -#ifdef LAST_CPUPID_NOT_IN_PAGE_FLAGS - int _last_cpupid; -#endif } _struct_page_alignment; =20 /* @@ -317,6 +316,9 @@ struct folio { atomic_t _refcount; #ifdef CONFIG_MEMCG unsigned long memcg_data; +#endif +#ifdef LAST_CPUPID_NOT_IN_PAGE_FLAGS + int _last_cpupid; #endif /* private: the union with struct page is transitional */ }; @@ -373,6 +375,9 @@ FOLIO_MATCH(_refcount, _refcount); #ifdef CONFIG_MEMCG FOLIO_MATCH(memcg_data, memcg_data); #endif +#ifdef LAST_CPUPID_NOT_IN_PAGE_FLAGS +FOLIO_MATCH(_last_cpupid, _last_cpupid); +#endif #undef FOLIO_MATCH #define FOLIO_MATCH(pg, fl) \ static_assert(offsetof(struct folio, fl) =3D=3D \ --=20 2.27.0