From patchwork Mon Aug 7 23:04:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vishal Moola X-Patchwork-Id: 13345354 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 96FC0C25B7B for ; Mon, 7 Aug 2023 23:06:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231262AbjHGXGm (ORCPT ); Mon, 7 Aug 2023 19:06:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45322 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230388AbjHGXGY (ORCPT ); Mon, 7 Aug 2023 19:06:24 -0400 Received: from mail-yb1-xb2e.google.com (mail-yb1-xb2e.google.com [IPv6:2607:f8b0:4864:20::b2e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1032510C0; Mon, 7 Aug 2023 16:05:56 -0700 (PDT) Received: by mail-yb1-xb2e.google.com with SMTP id 3f1490d57ef6-d16889b3e93so5396097276.0; Mon, 07 Aug 2023 16:05:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1691449534; x=1692054334; 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=qSt61pcnVgNBhKAHMe8eO3a6G9ChrNL9Px0NKJkznSI=; b=doFuHRFvbyMJN61tPnMQYXox+6stb50QdP4/3C93sFPuLhCWwxu1z+tfNZJ4b6Wpl+ E3E2D7c/fVsu9NK1PuuCIKOAph+/dD0UwiupTdpLzihtqamhwaXNn1+eSFxg36XE1nAW 9YCYbT+6Netay+dE7igP1FbsCv8QYjddLC3kVasHRyFjUe3vhlHJ5pPzAaFOmunT+EhT TypcY3libiW+1xTSZsvLq3CfCOXA2FWQUiU+MigDUHm3gt0TV6nV3mcKzhVGZgr0Qhni PeipZMs+ho2QZuOrtBA9RQFaTSU/S0o5wnK6eQ2hY8zhXlVshk/VfS/NqhE6JdbcRNTR jImw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691449534; x=1692054334; 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=qSt61pcnVgNBhKAHMe8eO3a6G9ChrNL9Px0NKJkznSI=; b=KjZBBStwiAcomgy/jGr5WB6aDhmzEtLWEK+Fcmv1Rdte96n/hoCFJIkcN0Dm8Sz1rV Df5GFAw06iocu4sxg484040jbVX69DcT3T0wKPwp+R3AQ1voWi8ALdl4Fu3EsgTGynpR m1RuqtSK2BMHkQQNq8TN24ABZeZ6iHjhUUoZKWCkWR8+vLyyMPXgOiqxDTASHKiV605y bM9T2JS3RWD/y03aa/FH17nMhx/O33FQOt60h7s6raeSDfWYaBQxy9RRUCV6wPDgA7op PPtJT+ULin6MZyxrPI9n9IN7Gn8plKN9B9KTKIds+x8hZh2wEo6FFLEtehohHnjLuctR tf1Q== X-Gm-Message-State: AOJu0YwEXpRJMHhr+0uumCA8OLxg1LwF3qT4L2spb0+GDcq3WZticB9P +oKy4ZXkuqa/jxhZBMKp0uwa8p55Yy0oKg== X-Google-Smtp-Source: AGHT+IH78clSYv8jjRwrTCz7hdEyV6ONxxFaBIBEI75jS+XpTOJin8WaSgmj5CyKgW8Moog6FuLvdA== X-Received: by 2002:a25:4c86:0:b0:d0a:d15b:3b0f with SMTP id z128-20020a254c86000000b00d0ad15b3b0fmr10002278yba.33.1691449534448; Mon, 07 Aug 2023 16:05:34 -0700 (PDT) Received: from unknowna0e70b2ca394.attlocal.net ([2600:1700:2f7d:1800::16]) by smtp.googlemail.com with ESMTPSA id d190-20020a25cdc7000000b00d3596aca5bcsm2545203ybf.34.2023.08.07.16.05.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 07 Aug 2023 16:05:34 -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 v9 08/31] mm: Convert ptlock_init() to use ptdescs Date: Mon, 7 Aug 2023 16:04:50 -0700 Message-Id: <20230807230513.102486-9-vishal.moola@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230807230513.102486-1-vishal.moola@gmail.com> References: <20230807230513.102486-1-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. Acked-by: Mike Rapoport (IBM) Signed-off-by: Vishal Moola (Oracle) --- 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 040982fe9063..13947b17f25e 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2892,7 +2892,7 @@ 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) @@ -2901,10 +2901,10 @@ 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; } @@ -2917,13 +2917,13 @@ 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); @@ -2998,7 +2998,7 @@ 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)