From patchwork Mon Jun 12 21:03:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vishal Moola X-Patchwork-Id: 13277532 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 18CE8CA9EB1 for ; Mon, 12 Jun 2023 21:10:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240758AbjFLVKm (ORCPT ); Mon, 12 Jun 2023 17:10:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58262 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238401AbjFLVH5 (ORCPT ); Mon, 12 Jun 2023 17:07:57 -0400 Received: from mail-oa1-x35.google.com (mail-oa1-x35.google.com [IPv6:2001:4860:4864:20::35]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0A6172717; Mon, 12 Jun 2023 14:05:07 -0700 (PDT) Received: by mail-oa1-x35.google.com with SMTP id 586e51a60fabf-1a67ea77c3bso1704160fac.3; Mon, 12 Jun 2023 14:05:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1686603906; x=1689195906; 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=8r19jukxjbsIB2/Mx0wfUFI2Md2D0Tal9unGSXZoJa8=; b=bBBhxHhwNc0dlcaV8h2a4XYBtWHGe22hvKvpniF7KzCYgALGdtw6ZDxkDC9x8Aeb3u L7SfltNSUTPpMMAZAPZwSuq1VjJBBWwWiBaC+Bz46NWJJnZ6VvwLLTRGFLrpelYb2La+ Z5XBEGo2Lx+4Q4s65Lii1xiAS9gXRmCdJj9fBmU+7pl8WPQzciZNN9tEea4s2EymiOfj uSb7iAfMXBR2nKnU1BBVn2AVnOIW9drJ/7GGkqivFyyrk3Sd/OJyxdPtL4bbaX3dpY3E iXz0Nc/l9PDCGRHW4+I9NS6xogIi8lZKNWODyR8ULfa6yt07nj/HtSeI3w5uor1wLjvR igBA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686603906; x=1689195906; 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=8r19jukxjbsIB2/Mx0wfUFI2Md2D0Tal9unGSXZoJa8=; b=erjTxUAnoLFUJ4ShjbZxYazk5fXvO/CHCpRAGlNb8dCa+dPMW6OPItzk6H0rmWMGii OMl/wZXu8l8irkCIXMdmOn1yLRWEAILH+NCp2znGAeziIxCjlZ+d5pewfKdB+D/jo8wa w5oJvBJZ3qtCYKbWPkZfZ9ZAj/A+PMNN3NY0OvFfbtIXdgkLP15foJERMTFRObpbM0jj 3Dx5SOonXffyGoiMOEc1kiSx0lom9qOWGBkzPUouG8bvXcA/RQ6zywuU53hvq3JDa9Zw EVUWL7L2zLJuREd7OuF/nMJEp1AvVo3U8fn18GOjjUdKPcKH7RDpcIa80+KGfH+Cmobh Jc6g== X-Gm-Message-State: AC+VfDzrXdGLk2QEX2aPydbSM9KnvycVLtH050Y6kqYe+MD1QXwl9FvR 9R2IlwPIC9LL62fytDQmx+c= X-Google-Smtp-Source: ACHHUZ6a/96wj8UsR1eewejCsUK79jNNmW6NRKVRY6WskMtRjwMJM0HWL1CF60/WviLDJygSxMchcw== X-Received: by 2002:a05:6870:989c:b0:1a3:4072:58f1 with SMTP id eg28-20020a056870989c00b001a3407258f1mr7318868oab.6.1686603906371; Mon, 12 Jun 2023 14:05:06 -0700 (PDT) Received: from unknowna0e70b2ca394.attlocal.net ([2600:1700:2f7d:1800::16]) by smtp.googlemail.com with ESMTPSA id s125-20020a817783000000b00569eb609458sm2757115ywc.81.2023.06.12.14.05.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 12 Jun 2023 14:05:06 -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, Hugh Dickins , "Vishal Moola (Oracle)" Subject: [PATCH v4 10/34] mm: Convert ptlock_init() to use ptdescs Date: Mon, 12 Jun 2023 14:03:59 -0700 Message-Id: <20230612210423.18611-11-vishal.moola@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230612210423.18611-1-vishal.moola@gmail.com> References: <20230612210423.18611-1-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) Acked-by: Mike Rapoport (IBM) --- 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 daecf1db6cf1..f48e626d9c98 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2857,7 +2857,7 @@ 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) @@ -2866,10 +2866,10 @@ 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; } @@ -2882,13 +2882,13 @@ 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); @@ -2947,7 +2947,7 @@ 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)