From patchwork Mon Jul 31 17:03:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vishal Moola X-Patchwork-Id: 13335162 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 1548EC04FE0 for ; Mon, 31 Jul 2023 17:05:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233919AbjGaRFA (ORCPT ); Mon, 31 Jul 2023 13:05:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59574 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233883AbjGaREU (ORCPT ); Mon, 31 Jul 2023 13:04:20 -0400 Received: from mail-yb1-xb35.google.com (mail-yb1-xb35.google.com [IPv6:2607:f8b0:4864:20::b35]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 84D5B1FD2; Mon, 31 Jul 2023 10:03:51 -0700 (PDT) Received: by mail-yb1-xb35.google.com with SMTP id 3f1490d57ef6-d05a63946e0so4859735276.1; Mon, 31 Jul 2023 10:03:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1690823030; x=1691427830; 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=uNVCmnQN0ufsotHop6mLPsVoSXSsgvYy2QMaIqEOqi4=; b=HGhOeQ1TmAKeV2HnCN1WTfuLUUGtIM4rPFVA9FLFfXc9y1teMeCMXYfLrn52VreEZa +8fuD8Eo9GHKIiGXji1nVJr6hJp1UgozAoPycNtpjPeWKRtcHWia112SYBPlfjErevM1 f1KBsm+b9biDP/8hsnmQLIxx1WqbIsap7/B5vxAAg5UayZGm1/xCMe4ANNoVXkXqO5f9 zYPLJX2R/yJdpXd33yeHG335BLgfWD5asDdFJsvc7qa94OZvu247hqr11p/tySJkF1N3 XZqqjnjnJwS4MTyfAeLK5z9Se8l+uTUdMKVbakuD0ppwzC8LFvwdJ3Q2bHVnQ+Hr6zUD fqZg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1690823030; x=1691427830; 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=uNVCmnQN0ufsotHop6mLPsVoSXSsgvYy2QMaIqEOqi4=; b=lG4yDcHfXaP+1XhXGKYkIfJhKZsdQd44SXqSlkotgQHR1xN1h0+sncDSD90Vka9+fP LTXl2qmTvchog8xKBnmOIwcv6jsxwJrMm+36YZ2vW76iJvPbmTeXyL4vSOVP0Ja9GnvW pFbie4NkbnrS649f9vULNt0mTPS0Q/keCa3DAVcztlG038DLrnXuszan3cTpEmdMj0YL M/7gKiJpmc42RmoKYO3STcWplJdTME+KEIlWnVceKdLNNpcq22zaADWVnuPCnBein0T+ YIL4J3660rPdxHrFWjjbeepm6ChqT1xJpKYJlNLP93dPKKhehjaQ9veokVXiS1F6DbXb Qlmw== X-Gm-Message-State: ABy/qLZNpa+RN0jktDygm/gwEmPoIgxtLtY86taxlLub1L1FUTmc76yM QJyoMvu95CgP/Hv3UupVhnI= X-Google-Smtp-Source: APBJJlEF5eMDgJhVfaLglGwfP9JkFsRVPWZwav0NLe508KhOsIkmqr6LHjKMWH59Isg1gKZnQYYAJw== X-Received: by 2002:a25:ae5c:0:b0:c73:9f38:2b3a with SMTP id g28-20020a25ae5c000000b00c739f382b3amr9095220ybe.48.1690823029862; Mon, 31 Jul 2023 10:03:49 -0700 (PDT) Received: from unknowna0e70b2ca394.attlocal.net ([2600:1700:2f7d:1800::16]) by smtp.googlemail.com with ESMTPSA id x31-20020a25ac9f000000b00c832ad2e2eesm2511833ybi.60.2023.07.31.10.03.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 31 Jul 2023 10:03:49 -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)" , Mike Rapoport Subject: [PATCH mm-unstable v8 06/31] mm: Convert ptlock_ptr() to use ptdescs Date: Mon, 31 Jul 2023 10:03:07 -0700 Message-Id: <20230731170332.69404-7-vishal.moola@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230731170332.69404-1-vishal.moola@gmail.com> References: <20230731170332.69404-1-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) --- 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 e0a975165de7..8796ec310483 100644 --- a/arch/x86/xen/mmu_pv.c +++ b/arch/x86/xen/mmu_pv.c @@ -667,7 +667,7 @@ 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 b3fce0bfe201..c155f82dd2cc 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2844,9 +2844,9 @@ 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) @@ -2862,15 +2862,15 @@ 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) @@ -2885,7 +2885,7 @@ 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; } @@ -2971,7 +2971,7 @@ 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)