From patchwork Tue Jun 27 03:14:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vishal Moola X-Patchwork-Id: 13293759 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 14632C25B5B for ; Tue, 27 Jun 2023 03:15:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229681AbjF0DPl (ORCPT ); Mon, 26 Jun 2023 23:15:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36068 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230244AbjF0DP1 (ORCPT ); Mon, 26 Jun 2023 23:15:27 -0400 Received: from mail-yw1-x1136.google.com (mail-yw1-x1136.google.com [IPv6:2607:f8b0:4864:20::1136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9C5FB1701; Mon, 26 Jun 2023 20:15:21 -0700 (PDT) Received: by mail-yw1-x1136.google.com with SMTP id 00721157ae682-57083a06b71so40012837b3.1; Mon, 26 Jun 2023 20:15:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1687835720; x=1690427720; 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=GRJmT9zZCc6VZLx9VY+7Q8GbOsBn33lZq/FXBv0aXORmxRac0rj/lSqIwgsFHnmh66 6cAHAx0KI5Lagl5OZRxl+lTWKC9rW3K7h91Q6uOR2njTfEcjIvHn1/QWkX3jlNssdRYv kPZ6iyIVFwiYJpTBLvXR9/yIre3tRTqt009ghcdse7E6cPjs19QO0aXvNJJOMDpClaY7 t8HHPKKx/NAZrk3fhoJWolRioMxC3Zc40A+aLrsXlHiTMIf/9zaAkHOq7TYNlbv+VzGn jItTpyFNqlbWxSgJZgFIeDKcVXb95B0vXbDJ5HgCdgCt4hiGi9xgNTBoUpG/3ZX1ru9x fM2Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1687835720; x=1690427720; 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=Lh51IWhEKFQe7c9Dybv3UjkBF5b/6eAF2x8etK9z/UyO23PNItsaPWpzYk6r4hKC2g MATRc9X22HQGCUUWA362bjL/K6Xwy51FLjc8oekFdjtn5K4bTtIzBWpysVx/lbTwe3me 5weCRd80Pr+9gU+utjjAM7nA2lMlim8qrnsLITigMxr/XE7YHCePgU1zvlHMdMljrxNU QJTJmdrniTP3gQXHLJ0J+l3gfgYYuAWADEwhWAmGNUZ931QhKDX6bAch+e/QtcnsWnF1 7vCcU5L6TrJTojxjS+xC5xugMLfKS4Qpzr1XLEimN4zZ9pul4jEjBmSAAMV/xv8N2zuA JvWw== X-Gm-Message-State: AC+VfDyKVKL2oJ210n72+7+QUX0kTNmBstoyMBmobjRMf0tSx3/e1Xjb XfhPVik0j/iGExayYL7Aito= X-Google-Smtp-Source: ACHHUZ63yguTuEDNtqBAUu0oFztqBMiblJl9iKmWyGby1Nlfce/DGMkGkkGcggiUUjYXFR4C+z9ptA== X-Received: by 2002:a0d:d78c:0:b0:56f:ff75:abcc with SMTP id z134-20020a0dd78c000000b0056fff75abccmr30306915ywd.29.1687835720566; Mon, 26 Jun 2023 20:15:20 -0700 (PDT) Received: from unknowna0e70b2ca394.attlocal.net ([2600:1700:2f7d:1800::16]) by smtp.googlemail.com with ESMTPSA id s4-20020a0dd004000000b0057399b3bd26sm1614798ywd.33.2023.06.26.20.15.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 26 Jun 2023 20:15:20 -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 06/33] mm: Convert ptlock_alloc() to use ptdescs Date: Mon, 26 Jun 2023 20:14:04 -0700 Message-Id: <20230627031431.29653-7-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 | 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; }