From patchwork Wed May 31 21:30:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vishal Moola X-Patchwork-Id: 13262637 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 74A2BC7EE2D for ; Wed, 31 May 2023 21:32:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230527AbjEaVcf (ORCPT ); Wed, 31 May 2023 17:32:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39234 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230459AbjEaVbu (ORCPT ); Wed, 31 May 2023 17:31:50 -0400 Received: from mail-yw1-x1130.google.com (mail-yw1-x1130.google.com [IPv6:2607:f8b0:4864:20::1130]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3BFF31B7; Wed, 31 May 2023 14:31:30 -0700 (PDT) Received: by mail-yw1-x1130.google.com with SMTP id 00721157ae682-565eb83efe4so948877b3.0; Wed, 31 May 2023 14:31:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1685568689; x=1688160689; 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=xowfOyB08CJw8MKGIIgRKSCkyhh2uF8MvUFj9KXpTSw=; b=L8ygLqSRY2eqB8nseiiMf24A2f/spwq3tiGOrBuR5p7dj9EWG9ImFwe46ZZwXRtvRX /V86q8xSGkCuVPlvQOJ2SMa4rsoFmPrmu5autDJLeyd3yfLXEA6bbO2/4Yqm1LlWBfgW xJxuutRSGFBvTral/NTreMAMCGbSkBu5TZ5qxdEeFHUTponOUVV1jiviowhgii7tWLBq MEHuHS4DCf2z1UfCtRdUmDITSqJKFDRP0C3+jLAFaOsLApRcLJ8PsQ+aNZLN1wbuZUBY Px85P6DC+zY+Gwn3bCa+FGLrsmclVsP0ccqay7jLihOMLhj3/zlw+zFLVxYDPwbySfXO VKRw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1685568689; x=1688160689; 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=xowfOyB08CJw8MKGIIgRKSCkyhh2uF8MvUFj9KXpTSw=; b=G4D8JPah1MPoPSbzhnKsmndIBQYiSfUZPhQPoj3NTwpQAap503AJC+HIKyFY9ktF1j h2uAdHQ0Lvn+LabG6zZ1MjcxWAnAFGgUEY6jrzEqB/vvEq/1qfcblN0qBEFjE2xwV3JS siRD+lk5kAY94RU663owz7ZdtxPEn+GgvhjtN0wIBD5WRrzjKihD3bS6t+K2YwpyKiAy A0IDSaRSs+h+ZGy8dwVRfSXUvBjzrN9RI+ScNmA3d2ObsLm0BaEqlDlkiGPVac9JhFZf 5uYw2oOfDh+k5GekMAExA7eJG8oC4dtGAgBEVQl8xyDG84eyckR1JbqoEwo/zXkTnziS 3BXw== X-Gm-Message-State: AC+VfDxRryH94/9V3Ovrh5HUqjosqitx4CWmmwaaSZ6A4F0Xbk5wcO0S trWF9t6KPCVP0/aLEhQIrwY= X-Google-Smtp-Source: ACHHUZ4HC/p6n5oc2YZUDdXfXImpqPK7MSZMtRTu8JGDzMkRUKKOQ8wmCGx7YESYze8Eib1xLonoHg== X-Received: by 2002:a81:5357:0:b0:561:c5c3:9d79 with SMTP id h84-20020a815357000000b00561c5c39d79mr7593955ywb.45.1685568689113; Wed, 31 May 2023 14:31:29 -0700 (PDT) Received: from unknowna0e70b2ca394.attlocal.net ([2600:1700:2f7d:1800::46]) by smtp.googlemail.com with ESMTPSA id t63-20020a0dd142000000b0055aafcef659sm658905ywd.5.2023.05.31.14.31.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 31 May 2023 14:31:28 -0700 (PDT) From: "Vishal Moola (Oracle)" To: Andrew Morton , Matthew Wilcox Cc: linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, loongarch@lists.linux.dev, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-openrisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-um@lists.infradead.org, xen-devel@lists.xenproject.org, kvm@vger.kernel.org, "Vishal Moola (Oracle)" Subject: [PATCH v3 10/34] mm: Convert ptlock_init() to use ptdescs Date: Wed, 31 May 2023 14:30:08 -0700 Message-Id: <20230531213032.25338-11-vishal.moola@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230531213032.25338-1-vishal.moola@gmail.com> References: <20230531213032.25338-1-vishal.moola@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org This removes some direct accesses to struct page, working towards splitting out struct ptdesc from struct page. Signed-off-by: Vishal Moola (Oracle) --- include/linux/mm.h | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index 8e63e60c399c..bc2f139de4e7 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2838,7 +2838,7 @@ static inline spinlock_t *pte_lockptr(struct mm_struct *mm, pmd_t *pmd) return ptlock_ptr(page_ptdesc(pmd_page(*pmd))); } -static inline bool ptlock_init(struct page *page) +static inline bool ptlock_init(struct ptdesc *ptdesc) { /* * prep_new_page() initialize page->private (and therefore page->ptl) @@ -2847,10 +2847,10 @@ static inline bool ptlock_init(struct page *page) * It can happen if arch try to use slab for page table allocation: * slab code uses page->slab_cache, which share storage with page->ptl. */ - VM_BUG_ON_PAGE(*(unsigned long *)&page->ptl, page); - if (!ptlock_alloc(page_ptdesc(page))) + VM_BUG_ON_PAGE(*(unsigned long *)&ptdesc->ptl, ptdesc_page(ptdesc)); + if (!ptlock_alloc(ptdesc)) return false; - spin_lock_init(ptlock_ptr(page_ptdesc(page))); + spin_lock_init(ptlock_ptr(ptdesc)); return true; } @@ -2863,13 +2863,13 @@ static inline spinlock_t *pte_lockptr(struct mm_struct *mm, pmd_t *pmd) return &mm->page_table_lock; } static inline void ptlock_cache_init(void) {} -static inline bool ptlock_init(struct page *page) { return true; } +static inline bool ptlock_init(struct ptdesc *ptdesc) { return true; } static inline void ptlock_free(struct page *page) {} #endif /* USE_SPLIT_PTE_PTLOCKS */ static inline bool pgtable_pte_page_ctor(struct page *page) { - if (!ptlock_init(page)) + if (!ptlock_init(page_ptdesc(page))) return false; __SetPageTable(page); inc_lruvec_page_state(page, NR_PAGETABLE); @@ -2928,7 +2928,7 @@ static inline bool pmd_ptlock_init(struct ptdesc *ptdesc) #ifdef CONFIG_TRANSPARENT_HUGEPAGE ptdesc->pmd_huge_pte = NULL; #endif - return ptlock_init(ptdesc_page(ptdesc)); + return ptlock_init(ptdesc); } static inline void pmd_ptlock_free(struct page *page)