From patchwork Thu Jun 22 20:57:18 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vishal Moola X-Patchwork-Id: 13289675 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 BA39DC0015E for ; Thu, 22 Jun 2023 20:59:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231601AbjFVU7Z (ORCPT ); Thu, 22 Jun 2023 16:59:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49288 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231435AbjFVU7C (ORCPT ); Thu, 22 Jun 2023 16:59:02 -0400 Received: from mail-oo1-xc2c.google.com (mail-oo1-xc2c.google.com [IPv6:2607:f8b0:4864:20::c2c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6A02E2100; Thu, 22 Jun 2023 13:58:27 -0700 (PDT) Received: by mail-oo1-xc2c.google.com with SMTP id 006d021491bc7-55e11f94817so4751978eaf.2; Thu, 22 Jun 2023 13:58:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1687467488; x=1690059488; 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=sr5TgrSX24KD5rPSp2rkPhxpII4heal/IIgk1FACoIs=; b=UtF2QiZk6b9G+hZ8o+uaaa8jIMv9kwu5Z4W+DnKhqSxtuxZLeuCmgWiQ2UyCbKdGf3 JlKYQP1/9HAEwi4YcMuZIpkc1UasphklUD1y4PAfxdaiUenlc82pk0MDNgE4UyvTP/Ti WAZ4mtTP+0UbBT6PIwdrRUvrUpbxA+faq7jSe2iTSffGzc1HNKXsxuak3eG36Kz3Hx1p 3Bw014l7N9peXiYCyjbUvF7k31KviCnInVoJPhH8kz/FXkdJ8oxWXWbjuOh6BjmUEfNL NLvkARmq7C0ZzVI4l8HT21OfZWS/swkiU6k+jkbLgeAOyE/KVS/34HjWz0qthh2YGY4M vuhg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1687467488; x=1690059488; 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=sr5TgrSX24KD5rPSp2rkPhxpII4heal/IIgk1FACoIs=; b=LmSoB8fH1eDh4wgcjjE2RjieMj/W83hYGq7yDiI7vOdAEtjM9Er2hVnaBdwQNCoXa0 dk6kB2mWe7Jx/6cltrQOAes6xOkTcK9DRNBgkJnVXbWf+KpV4biVmYw/vcZSaakXeCQe depRu+gZLoBMoogeMRSxSHXnuz9AebypY6rtZYLUsSsG17pc+NgDp3T09v8g/vP3pFrK pN3A/8Fv7w/3cEC/JHTTCIo/bIngiawBccU66fEv8uvwDyq3SV8kIPiG06+6A/4tSnXH J3uRcNCsV9rwopS57M+cCe2aZ1Utai1KVV//UruPMrHxUprB+5rBazBhV3QPUiw7yYaD CZ+Q== X-Gm-Message-State: AC+VfDwcM8S6Mw0uuKLDCbKlkVM3cRlCnQBiLSOdbwFWYX+E7UP1TRhm y/Or8emD4oFBn9U5ZDhoTYk= X-Google-Smtp-Source: ACHHUZ6Wv4q+lCV8nxexJGI3S2vfJP94k7k+pAexpWAqQNNuxMHJpmGx+Tn2Ll2+HAYtwXHgGRnsHw== X-Received: by 2002:a05:6358:9f9f:b0:132:d8bc:b15b with SMTP id fy31-20020a0563589f9f00b00132d8bcb15bmr1343396rwb.2.1687467488545; Thu, 22 Jun 2023 13:58:08 -0700 (PDT) Received: from unknowna0e70b2ca394.attlocal.net ([2600:1700:2f7d:1800::36]) by smtp.googlemail.com with ESMTPSA id d18-20020a5b0c52000000b00bc501a1b062sm1684937ybr.42.2023.06.22.13.58.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 22 Jun 2023 13:58:08 -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 v5 06/33] mm: Convert ptlock_alloc() to use ptdescs Date: Thu, 22 Jun 2023 13:57:18 -0700 Message-Id: <20230622205745.79707-7-vishal.moola@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230622205745.79707-1-vishal.moola@gmail.com> References: <20230622205745.79707-1-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 | 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 1511faf0263c..39b0a4661e44 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2798,7 +2798,7 @@ static inline void pagetable_free(struct ptdesc *pt) #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) @@ -2810,7 +2810,7 @@ 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; } @@ -2840,7 +2840,7 @@ 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 80faf3e76232..2ff14f50c7b3 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -5920,14 +5920,14 @@ 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; }