From patchwork Mon Jun 12 21:03:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vishal Moola X-Patchwork-Id: 13277503 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 51853CA9EA9 for ; Mon, 12 Jun 2023 21:08:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239163AbjFLVIO (ORCPT ); Mon, 12 Jun 2023 17:08:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57164 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238840AbjFLVHy (ORCPT ); Mon, 12 Jun 2023 17:07:54 -0400 Received: from mail-yw1-x112f.google.com (mail-yw1-x112f.google.com [IPv6:2607:f8b0:4864:20::112f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2CCCF19A7; Mon, 12 Jun 2023 14:05:01 -0700 (PDT) Received: by mail-yw1-x112f.google.com with SMTP id 00721157ae682-56d4f50427cso6510907b3.3; Mon, 12 Jun 2023 14:05:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1686603900; x=1689195900; 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=csibueTQMI8hz/axFpDokmCUVKS4XWTLf0OEMRBu+sg=; b=FDAUnHm2faFSWGwfZS5hO+D9w8GP4e4g1ML7/tmHqNMsyYqyAD51ooe/UZAynheb45 JUNAZVEGWiy3FM+aYWlvoHKaBUFoNzNTwUdIl4kQAVJN12Picp2GbnIh1UwydO/qddyi DCuNf5aNp8X4OTmdAm+cAeL3CGsOgaZ27ub95e/8MTqIlBQGK4N048waW9QZBpSO9XHI sWfFM9CmbvJbA3uGm5rS2JNk4GtvKzbhh98S182OZhG/f2sSkxT71cjOLs4vhjGq3bqf ArQftxucDa5+VY1eeLZl1/JDXSt6Px6z9h8EFmxArPTIN+H3XkndN1zswUa8dX9vrXU3 5Q2g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686603900; x=1689195900; 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=csibueTQMI8hz/axFpDokmCUVKS4XWTLf0OEMRBu+sg=; b=LiEySVJNcLE9qMiwIh52LiKd/n1Np5LA6mMtE3T3ixz4XgHQZI1EbfO7UD/6q/lhyu RutLjQ6/DC16rh9RAM6Nx7t/ciNllSUEWSZ7DMwgruPXFG1/kkqi75PQwLmm7xKVcLvY HLUwO425FZ2bVFp2doD7buYkTk42h/Vb21daf5LYqUwal/r1KR6MsR7sJJxgAMRAgk5N Chwp6ckOrJeRDZgn/Vv38/kSESKicF7Uf5H+u1Ny1gP1gH05GdeMgeEcgk410YQnSQTW 6ci+8CbbwAl56p5xE5MNUTzcC9Q81YHELMZXcIaUPPqosvLYs014mqNch8in+lm7PJVZ hSRw== X-Gm-Message-State: AC+VfDwU/VF/nFod2/LdSGfFRyfdOP3J4P/vCMRROjYdUNNOmB+6yiER X8M8mkRPkyHUFxV3PajhbyE= X-Google-Smtp-Source: ACHHUZ7XKzfLRWmcjDH1kOSVD0e6fKxxbDH/DoQa8Wv3QDYuxgXM2gpDCQ5rMsZn09dpzldtR2HsSA== X-Received: by 2002:a0d:e294:0:b0:56d:5041:78b with SMTP id l142-20020a0de294000000b0056d5041078bmr1552114ywe.2.1686603900209; Mon, 12 Jun 2023 14:05:00 -0700 (PDT) Received: from unknowna0e70b2ca394.attlocal.net ([2600:1700:2f7d:1800::16]) by smtp.googlemail.com with ESMTPSA id s125-20020a817783000000b00569eb609458sm2757115ywc.81.2023.06.12.14.04.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 12 Jun 2023 14:04:59 -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)" Subject: [PATCH v4 07/34] mm: Convert ptlock_alloc() to use ptdescs Date: Mon, 12 Jun 2023 14:03:56 -0700 Message-Id: <20230612210423.18611-8-vishal.moola@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230612210423.18611-1-vishal.moola@gmail.com> References: <20230612210423.18611-1-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 088b7664f897..e6f1be2a405e 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2825,7 +2825,7 @@ static inline void pagetable_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) @@ -2837,7 +2837,7 @@ 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; } @@ -2867,7 +2867,7 @@ 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 80ce9dda2779..ba9579117686 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -5934,14 +5934,14 @@ 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; }