From patchwork Tue Jun 27 03:14:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vishal Moola X-Patchwork-Id: 13293763 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 25006C10F1A for ; Tue, 27 Jun 2023 03:16:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230078AbjF0DQB (ORCPT ); Mon, 26 Jun 2023 23:16:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36176 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230340AbjF0DPd (ORCPT ); Mon, 26 Jun 2023 23:15:33 -0400 Received: from mail-yw1-x112b.google.com (mail-yw1-x112b.google.com [IPv6:2607:f8b0:4864:20::112b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A78BD1BF8; Mon, 26 Jun 2023 20:15:27 -0700 (PDT) Received: by mail-yw1-x112b.google.com with SMTP id 00721157ae682-576918f4cf7so32409687b3.3; Mon, 26 Jun 2023 20:15:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1687835727; x=1690427727; 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=uRcW1jW+95PozpJhE7MOWGztyyXp9a8KAqI8T3AvQGQ=; b=pvA/vO4MDeq4kIIhsE3yrV9+ALefWilKkLuNIgHhecd9VDeKpQ3CrB44RRLXN/wH9a v+3v6EJOL2IcXShzxOvXaOjl2qaDyEgyn03s8SsAgafbqCa5mGXGEFvhH716JQIAT0SC QEIWs35jWLlJpDE0C433qu5q7ESJ8UkDS3w921ZCRctPmdDsHkPUrtmlpYzw5VwqW3do SQRdIAIjkZikdiXvEEkKtp7sFgpQSLF0GRJH1HdPtksJU7st37GWKQiDw1MyawGMKHo0 s5ztl+d6CGvn0kzD8aZyh2iX1osumXcuHPhisUrTXBEX0Rdvq7Iup64Z2b22TeYu/gRr mzYg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1687835727; x=1690427727; 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=uRcW1jW+95PozpJhE7MOWGztyyXp9a8KAqI8T3AvQGQ=; b=MkTh2ZB3XyXxu7xIgWkj2/HlGA+466Bdro/jIWxIY5HKeNxv2GO2ipLqkiUdCMcTWf YKklNnSwbwfMDfOjLoAOlZujS2ek/DiBUw/4w/KruqROi8iZPu5KAD850macWR4FXTBl Jo8IhmQaAmEYXOKqsQR6bw9cm3XhR/jNuX8uFvW5eZMgLJg226NKhEqNW+3HWOc94NNh KG5b0PjDoWMSnQsTALrChKmHvsyNIMdbhpNLWZ12byaAb5pxn2SFt92lSGYFSLTmIywm GsUQuwYj4Tlusi8S6qQt0nBeqNM+Y/XPJFLWqmFXlmqbp8CzSAzGLx7b+7657Njv8iU4 nbtg== X-Gm-Message-State: AC+VfDxEmi6ppn7KC9Ak658Bpvwm1akcuXtn3af+7LI+Jd+48xFpeFVU y9iaJqN2w9n7OGFuPQV5j2E= X-Google-Smtp-Source: ACHHUZ44nBppmQGdd8zdkRU4D5yhqKKKAoy0EjGlUrIReqb1/1yiuyQcU5hRXay6VI94GfMmMF8RKg== X-Received: by 2002:a81:c203:0:b0:561:da0d:6488 with SMTP id z3-20020a81c203000000b00561da0d6488mr27417977ywc.50.1687835726781; Mon, 26 Jun 2023 20:15:26 -0700 (PDT) Received: from unknowna0e70b2ca394.attlocal.net ([2600:1700:2f7d:1800::16]) by smtp.googlemail.com with ESMTPSA id s4-20020a0dd004000000b0057399b3bd26sm1614798ywd.33.2023.06.26.20.15.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 26 Jun 2023 20:15:26 -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 v6 09/33] mm: Convert ptlock_init() to use ptdescs Date: Mon, 26 Jun 2023 20:14:07 -0700 Message-Id: <20230627031431.29653-10-vishal.moola@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230627031431.29653-1-vishal.moola@gmail.com> References: <20230627031431.29653-1-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 1c4c6a7b69b3..4af424e4015a 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2830,7 +2830,7 @@ 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) @@ -2839,10 +2839,10 @@ 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; } @@ -2855,13 +2855,13 @@ 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); @@ -2931,7 +2931,7 @@ 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)