From patchwork Mon Jun 26 17:14:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ryan Roberts X-Patchwork-Id: 13293244 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B15EEEB64D9 for ; Mon, 26 Jun 2023 17:15:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=zv+ZE+8ewIxmiH4h9iPluNMXldW4kdeukWqbOlHRXqY=; b=CoJY0TG5+yKYx6 6SELG8By7OduLdJj3kAwy0hX3u2dyo/iC5zJ4skm1g31ZUNdIAKbzV7av6jUmIpkHhV7ev4M81dkA L5QoPZmczUADdrUhA6M28sj0FQXiE0/YSZPQl9IOWvIYqKYVoQA2Ijtvb7KFruQpoPoJKunkNVWSr bqjfTc+nnMMvHW1Jf3Md0r30Dr653A0y1MM6L6psqy40/2jvPM6VebCctXPTlhfvCplMaMPNwyvNI NX4tPPytZ9avAxBp9V9TyYPsK0i8gJ2asKU+Us91Z/8S9v0ysB/jBLfw981spS4AZFfvLKyrseILw x3oSR8VHEI2iEsyUXC3g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qDpnd-00AiVy-1M; Mon, 26 Jun 2023 17:14:49 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qDpnZ-00AiUF-2k for linux-arm-kernel@lists.infradead.org; Mon, 26 Jun 2023 17:14:47 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 31D9613D5; Mon, 26 Jun 2023 10:15:28 -0700 (PDT) Received: from e125769.cambridge.arm.com (e125769.cambridge.arm.com [10.1.196.26]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 484F93F663; Mon, 26 Jun 2023 10:14:41 -0700 (PDT) From: Ryan Roberts To: Andrew Morton , "Matthew Wilcox (Oracle)" , "Kirill A. Shutemov" , Yin Fengwei , David Hildenbrand , Yu Zhao , Catalin Marinas , Will Deacon , Geert Uytterhoeven , Christian Borntraeger , Sven Schnelle , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" Cc: Ryan Roberts , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-s390@vger.kernel.org Subject: [PATCH v1 01/10] mm: Expose clear_huge_page() unconditionally Date: Mon, 26 Jun 2023 18:14:21 +0100 Message-Id: <20230626171430.3167004-2-ryan.roberts@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230626171430.3167004-1-ryan.roberts@arm.com> References: <20230626171430.3167004-1-ryan.roberts@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230626_101445_950495_AC5501CE X-CRM114-Status: GOOD ( 12.03 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org In preparation for extending vma_alloc_zeroed_movable_folio() to allocate a arbitrary order folio, expose clear_huge_page() unconditionally, so that it can be used to zero the allocated folio in the generic implementation of vma_alloc_zeroed_movable_folio(). Signed-off-by: Ryan Roberts --- include/linux/mm.h | 3 ++- mm/memory.c | 2 +- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index 7f1741bd870a..7e3bf45e6491 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -3684,10 +3684,11 @@ enum mf_action_page_type { */ extern const struct attribute_group memory_failure_attr_group; -#if defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined(CONFIG_HUGETLBFS) extern void clear_huge_page(struct page *page, unsigned long addr_hint, unsigned int pages_per_huge_page); + +#if defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined(CONFIG_HUGETLBFS) int copy_user_large_folio(struct folio *dst, struct folio *src, unsigned long addr_hint, struct vm_area_struct *vma); diff --git a/mm/memory.c b/mm/memory.c index fb30f7523550..3d4ea668c4d1 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -5741,7 +5741,6 @@ void __might_fault(const char *file, int line) EXPORT_SYMBOL(__might_fault); #endif -#if defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined(CONFIG_HUGETLBFS) /* * Process all subpages of the specified huge page with the specified * operation. The target subpage will be processed last to keep its @@ -5839,6 +5838,7 @@ void clear_huge_page(struct page *page, process_huge_page(addr_hint, pages_per_huge_page, clear_subpage, page); } +#if defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined(CONFIG_HUGETLBFS) static int copy_user_gigantic_page(struct folio *dst, struct folio *src, unsigned long addr, struct vm_area_struct *vma,