From patchwork Mon May 1 19:28:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vishal Moola X-Patchwork-Id: 13228052 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 F337AC77B7C for ; Mon, 1 May 2023 19:30:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233779AbjEATau (ORCPT ); Mon, 1 May 2023 15:30:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56432 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233202AbjEAT3X (ORCPT ); Mon, 1 May 2023 15:29:23 -0400 Received: from mail-pl1-x635.google.com (mail-pl1-x635.google.com [IPv6:2607:f8b0:4864:20::635]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B0B8130D5; Mon, 1 May 2023 12:28:55 -0700 (PDT) Received: by mail-pl1-x635.google.com with SMTP id d9443c01a7336-1aaf70676b6so9588195ad.3; Mon, 01 May 2023 12:28:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1682969324; x=1685561324; 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=+5AaOHEPf+h0pPpRdylr/G5bcmt7vW9RVYKqYfsRH1I=; b=roKi10VJs9dRiilqVeW0uT+zBJLQBRTUlVbgvCysCoLkLcBaFtSDJFWEbNs2bywIGo H3vsreWJ1ZpYCtBmz7ULTfsdWW+yedXBXQs/IwteaEsgFryEWzy4p352hRLq6aefxJE1 6kRZZ9T8eU7cXFjWBj8Pc1GfIk6+0XR5y+mT0ED8uGwr4lyimQw2Z0aiiwvL0/TUCnLz 1YAzhf+9hpLKk/t8M1Z7w1Ox1h7cTnYF1yo9NW5nVgHqgkVIivMOhZpN29c9g57SmIug sEztd2i0kQBJZgz4HOMkQSUf4qdi6lxWXkVGt+hsJgx7i60d4BQr0JdQ/AyxEv6LKtIb /zeQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1682969324; x=1685561324; 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=+5AaOHEPf+h0pPpRdylr/G5bcmt7vW9RVYKqYfsRH1I=; b=N/MfAomu8m4l6i6IJYOz6TbmVEbuzGux3ZIr8w4f/KVFzI5D+KHddGoli+iXQxXqCk ranCgeigoa8NbbD6TspHp0+k+X7qrPYhFLqJPSnRpOjsphtJV6rRPCJ7q915wR9wIhDq TvkH96CFfbB5/FiO65yn6TZFyF41Dr+snC8AzeYybatjV7MEGnT7aRq3R1qi3l2p8qvd nydDCsoEvl4hDDj8UwdnBq5lc5okWFiYvyOcC5krUjz9fRAh+MXykgiQou34q3bKWtys VAhPikhOX//0O0M8DkCbvwv5zqjJqQ5dOjwStgihKiTvNAes+spU9pDzV4XD1CUV5pWT X11Q== X-Gm-Message-State: AC+VfDzBM1rVB4au6H6gZ6pnAZZmJLBmhuDjqfOffDczOiwfLkvF6l+N 00mvgjfmfaDRBxkSuGHEBFc= X-Google-Smtp-Source: ACHHUZ4PPvDcr1ZSfGKsFuoX96n8X09PGID8nEMj55TFVd8R4rz9suoKbv6A+ENi8FZ5wQLN727S7w== X-Received: by 2002:a17:902:ca0d:b0:1a6:5274:c1b0 with SMTP id w13-20020a170902ca0d00b001a65274c1b0mr12751445pld.60.1682969324101; Mon, 01 May 2023 12:28:44 -0700 (PDT) Received: from fedora.hsd1.ca.comcast.net ([2601:644:937f:7f20::9a2c]) by smtp.googlemail.com with ESMTPSA id u8-20020a170902bf4800b0019c13d032d8sm18175622pls.253.2023.05.01.12.28.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 May 2023 12:28:43 -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 v2 07/34] mm: Convert ptlock_alloc() to use ptdescs Date: Mon, 1 May 2023 12:28:02 -0700 Message-Id: <20230501192829.17086-8-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) --- include/linux/mm.h | 6 +++--- mm/memory.c | 4 ++-- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index 62c1635a9d44..565da5f39376 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2786,7 +2786,7 @@ static inline void ptdesc_clear(void *x) #if USE_SPLIT_PTE_PTLOCKS #if ALLOC_SPLIT_PTLOCKS void __init ptlock_cache_init(void); -extern bool ptlock_alloc(struct page *page); +bool ptlock_alloc(struct ptdesc *ptdesc); extern void ptlock_free(struct page *page); static inline spinlock_t *ptlock_ptr(struct page *page) @@ -2798,7 +2798,7 @@ static inline void ptlock_cache_init(void) { } -static inline bool ptlock_alloc(struct page *page) +static inline bool ptlock_alloc(struct ptdesc *ptdesc) { return true; } @@ -2828,7 +2828,7 @@ static inline bool ptlock_init(struct page *page) * 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)) + if (!ptlock_alloc(page_ptdesc(page))) return false; spin_lock_init(ptlock_ptr(page)); return true; diff --git a/mm/memory.c b/mm/memory.c index 5e2c6b1fc00e..ba0dd1b2d616 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -5939,14 +5939,14 @@ void __init ptlock_cache_init(void) SLAB_PANIC, NULL); } -bool ptlock_alloc(struct page *page) +bool ptlock_alloc(struct ptdesc *ptdesc) { spinlock_t *ptl; ptl = kmem_cache_alloc(page_ptl_cachep, GFP_KERNEL); if (!ptl) return false; - page->ptl = ptl; + ptdesc->ptl = ptl; return true; }