From patchwork Mon Apr 17 20:50:22 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vishal Moola X-Patchwork-Id: 13214601 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 1A55AC7EE37 for ; Mon, 17 Apr 2023 20:53:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231202AbjDQUx2 (ORCPT ); Mon, 17 Apr 2023 16:53:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39386 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230414AbjDQUxP (ORCPT ); Mon, 17 Apr 2023 16:53:15 -0400 Received: from mail-pj1-x1032.google.com (mail-pj1-x1032.google.com [IPv6:2607:f8b0:4864:20::1032]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9A5C05582; Mon, 17 Apr 2023 13:52:55 -0700 (PDT) Received: by mail-pj1-x1032.google.com with SMTP id sj1-20020a17090b2d8100b00247bd1a66d4so1716469pjb.5; Mon, 17 Apr 2023 13:52:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1681764775; x=1684356775; 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=7rEN7TkKGGrS4Nr1e9+VSo1FDhdsaSEXyIULzlMdAE4=; b=EY4pAo5dPiMdURcOVQM/Apa82VCO0I/XR1aYYt5qSz76HGumyOhUfKwA9+Mr5OFHh6 y4qX3lmzBRH5sE5hiL3G5H7+P1vU90VNiEuutpY92Aii8KdV81S7nJ0QBzccPQA4L2A1 H0r+gFj2e0wYN/AG4aVILv2cjCWqAiomeMPXPkWjszJF01iQ5TmXH8Bsz45QUOgwxoQ4 sHC8DrgU25+a1fsqdhglJSyR11j/cBOYD1x2MxJDA6rfBM+Ci8Y+wWCZicg642iTcaFB y1U70avkZLTukuwNbayq0JR0dDmctnOUY0ghxZuZ1egx4BqGjtzmW9DXZrJYTWGZ5wwv sRpQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681764775; x=1684356775; 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=7rEN7TkKGGrS4Nr1e9+VSo1FDhdsaSEXyIULzlMdAE4=; b=Zs4n3immWWinWs6YVXUFCiY6Nov07aEmqO0tasIkN6Fs4fQ4ZiapspIpb01T4U8rO3 zB9I2kjC9znDQd8EVi6/R/6HKaQHcsrKytAtWSAs3lfKXowPk2RTiSX+JzZiNO9FzYx8 CL5o0C3KHZd1tBvNlXz/rzcGZ24FTzL80M4WTWgZEj/dEXCFeH5n6tLMFYKFEBHzrnAH OaSDZSggZkCxqEkzTCFh+bdsk6E4xrNo4Ck7HxSzlhAmYMuCcPvqdbLo9CdfMNNn+W+O 3yGemWTVyO5ds0U9thZLPirN456nKIhSxkDuLk+KFxocuxClIez1dAGcbAyEhPslIq0M 2DNA== X-Gm-Message-State: AAQBX9dtg584RLQq+VUCQclpqCf60OBI5suxNPs7Gy8ZRTG/MLB6pipR W6z/v7AApKyIqbCfdOBK6D0= X-Google-Smtp-Source: AKy350Yghynh+/JYw1Y4OeSQkY97RuGOXV9v1JZPlpoHn0H6WhBdjqt/CneUg+QzYmLvk18Z1w5zNw== X-Received: by 2002:a05:6a20:394f:b0:ef:b02a:b35b with SMTP id r15-20020a056a20394f00b000efb02ab35bmr6833020pzg.0.1681764775054; Mon, 17 Apr 2023 13:52:55 -0700 (PDT) Received: from fedora.hsd1.ca.comcast.net ([2601:644:937f:7f20::c139]) by smtp.googlemail.com with ESMTPSA id h7-20020a17090ac38700b0022335f1dae2sm7609707pjt.22.2023.04.17.13.52.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Apr 2023 13:52:54 -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 07/33] mm: Convert ptlock_ptr() to use ptdescs Date: Mon, 17 Apr 2023 13:50:22 -0700 Message-Id: <20230417205048.15870-8-vishal.moola@gmail.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230417205048.15870-1-vishal.moola@gmail.com> References: <20230417205048.15870-1-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) --- arch/x86/xen/mmu_pv.c | 2 +- include/linux/mm.h | 14 +++++++------- 2 files changed, 8 insertions(+), 8 deletions(-) diff --git a/arch/x86/xen/mmu_pv.c b/arch/x86/xen/mmu_pv.c index fdc91deece7e..a1c9f8dcbb5a 100644 --- a/arch/x86/xen/mmu_pv.c +++ b/arch/x86/xen/mmu_pv.c @@ -651,7 +651,7 @@ static spinlock_t *xen_pte_lock(struct page *page, struct mm_struct *mm) spinlock_t *ptl = NULL; #if USE_SPLIT_PTE_PTLOCKS - ptl = ptlock_ptr(page); + ptl = ptlock_ptr(page_ptdesc(page)); spin_lock_nest_lock(ptl, &mm->page_table_lock); #endif diff --git a/include/linux/mm.h b/include/linux/mm.h index 17dc6e37ea03..ed8dd0464841 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2789,9 +2789,9 @@ void __init ptlock_cache_init(void); bool ptlock_alloc(struct ptdesc *ptdesc); extern void ptlock_free(struct page *page); -static inline spinlock_t *ptlock_ptr(struct page *page) +static inline spinlock_t *ptlock_ptr(struct ptdesc *ptdesc) { - return page->ptl; + return ptdesc->ptl; } #else /* ALLOC_SPLIT_PTLOCKS */ static inline void ptlock_cache_init(void) @@ -2807,15 +2807,15 @@ static inline void ptlock_free(struct page *page) { } -static inline spinlock_t *ptlock_ptr(struct page *page) +static inline spinlock_t *ptlock_ptr(struct ptdesc *ptdesc) { - return &page->ptl; + return &ptdesc->ptl; } #endif /* ALLOC_SPLIT_PTLOCKS */ static inline spinlock_t *pte_lockptr(struct mm_struct *mm, pmd_t *pmd) { - return ptlock_ptr(pmd_page(*pmd)); + return ptlock_ptr(page_ptdesc(pmd_page(*pmd))); } static inline bool ptlock_init(struct page *page) @@ -2830,7 +2830,7 @@ static inline bool ptlock_init(struct page *page) VM_BUG_ON_PAGE(*(unsigned long *)&page->ptl, page); if (!ptlock_alloc(page_ptdesc(page))) return false; - spin_lock_init(ptlock_ptr(page)); + spin_lock_init(ptlock_ptr(page_ptdesc(page))); return true; } @@ -2900,7 +2900,7 @@ static inline struct ptdesc *pmd_ptdesc(pmd_t *pmd) static inline spinlock_t *pmd_lockptr(struct mm_struct *mm, pmd_t *pmd) { - return ptlock_ptr(ptdesc_page(pmd_ptdesc(pmd))); + return ptlock_ptr(pmd_ptdesc(pmd)); } static inline bool pmd_ptlock_init(struct page *page)