From patchwork Mon May 1 19:28:03 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vishal Moola X-Patchwork-Id: 13227979 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 19586C7EE29 for ; Mon, 1 May 2023 19:29:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233619AbjEAT3u (ORCPT ); Mon, 1 May 2023 15:29:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56506 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233342AbjEAT3X (ORCPT ); Mon, 1 May 2023 15:29:23 -0400 Received: from mail-pf1-x430.google.com (mail-pf1-x430.google.com [IPv6:2607:f8b0:4864:20::430]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1D1FA35A7; Mon, 1 May 2023 12:28:56 -0700 (PDT) Received: by mail-pf1-x430.google.com with SMTP id d2e1a72fcca58-63b5c4c769aso3333052b3a.3; Mon, 01 May 2023 12:28:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1682969325; x=1685561325; 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=dsNph+IH8G9kAdlfpPDvdsVRvR3y4GWwc24n4bCHoNE=; b=ORzYAt4fgaepA0jj/nxqG5QCQUnwh7Hd86B8NHpvgQ9XS5bxCw6FjAddYAhSWVBGhs RguloM+rsX2sX5k8L8jQmcK3uoCnItaXGukxO2sNFKQkHNbJapaDcmG0iMAuRZwI8f8t xe4tIz8OOyBZAi/AlwagFAtmsldgUDQdHIa2vdidJh9lpo3fAW1D+2jPZJhQXOxhvdZs c4hk+WfixJsxNAANDMRcuNKXIxHiA6rEY6QaL0IGeoKtL1JoS6dBJBARbulTJ6NVKxdj 8lac9J2KQ3hHBoBfb7fQ//alN+wtsMCP7K7b5tVdh9EZXnnMD2pBGWAPXyEldDpkm7ax zAvw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1682969325; x=1685561325; 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=dsNph+IH8G9kAdlfpPDvdsVRvR3y4GWwc24n4bCHoNE=; b=gWSgnGobc0XThJlXPJkM8585jxg/rQbpk+J2Knul0QxabNWNm9/VR7U6+qgeoCQWfm MVgLuqJuo3fbHsX+4qATrYrjMVyyURfTESv5Tdn0gbStrtVAty7nje2JEPV4aIGnne0A k+QjbBmM0UXN/MGfPt5VfatOx1/VeYqj5n65khXLSAev0qeCWrWWEZVKT1jHxGmoV4qu /+hTAnurt5Q2eWjasqFrGa1Z3hoaTLdGfIEtYWHmYFyvWxGQ28THYOWDmlAuheVfnZuW XWyH1m3mDTvxf+B6/wVnGaZl75SdJHdJ8j/5+QxRfIbujd/teaSWxm8CBbQ1GVQlRbVg RGUA== X-Gm-Message-State: AC+VfDwi05cJ15RyZIyeLCXoiElf8ouoJlK2nPo/tjkfVrc2ISIt6emT EvulrYYBSp+UQDuNxhJ8zPE= X-Google-Smtp-Source: ACHHUZ6Hyp/uTZNVOfbVle27YVii8Y9q7eyatfM6y5VDboeAGhZWSkyjhlYeOczpnOUzLbM+Y5y88w== X-Received: by 2002:a17:902:da90:b0:1a9:b902:84b9 with SMTP id j16-20020a170902da9000b001a9b90284b9mr18090785plx.24.1682969325399; Mon, 01 May 2023 12:28:45 -0700 (PDT) Received: from fedora.hsd1.ca.comcast.net ([2601:644:937f:7f20::9a2c]) by smtp.googlemail.com with ESMTPSA id u8-20020a170902bf4800b0019c13d032d8sm18175622pls.253.2023.05.01.12.28.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 May 2023 12:28:45 -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)" , Dave Hansen Subject: [PATCH v2 08/34] mm: Convert ptlock_ptr() to use ptdescs Date: Mon, 1 May 2023 12:28:03 -0700 Message-Id: <20230501192829.17086-9-vishal.moola@gmail.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230501192829.17086-1-vishal.moola@gmail.com> References: <20230501192829.17086-1-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 565da5f39376..49fdc1199bd4 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)