From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pl0-f72.google.com (mail-pl0-f72.google.com [209.85.160.72]) by kanga.kvack.org (Postfix) with ESMTP id 689AC6B0005 for ; Tue, 19 Jun 2018 02:14:43 -0400 (EDT) Received: by mail-pl0-f72.google.com with SMTP id q18-v6so11523063pll.3 for ; Mon, 18 Jun 2018 23:14:43 -0700 (PDT) Received: from mga17.intel.com (mga17.intel.com. [192.55.52.151]) by mx.google.com with ESMTPS id i1-v6si16125530pld.152.2018.06.18.23.14.42 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 18 Jun 2018 23:14:42 -0700 (PDT) Subject: [PATCH v3 1/8] mm, devm_memremap_pages: Mark devm_memremap_pages() EXPORT_SYMBOL_GPL From: Dan Williams Date: Mon, 18 Jun 2018 23:04:44 -0700 Message-ID: <152938828436.17797.6503178614207917252.stgit@dwillia2-desk3.amr.corp.intel.com> In-Reply-To: <152938827880.17797.439879736804291936.stgit@dwillia2-desk3.amr.corp.intel.com> References: <152938827880.17797.439879736804291936.stgit@dwillia2-desk3.amr.corp.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Sender: owner-linux-mm@kvack.org List-ID: To: akpm@linux-foundation.org Cc: Michal Hocko , =?utf-8?b?SsOpcsO0bWU=?= Glisse , Christoph Hellwig , linux-mm@kvack.org, linux-kernel@vger.kernel.org The devm_memremap_pages() facility is tightly integrated with the kernel's memory hotplug functionality. It injects an altmap argument deep into the architecture specific vmemmap implementation to allow allocating from specific reserved pages, and it has Linux specific assumptions about page structure reference counting relative to get_user_pages() and get_user_pages_fast(). It was an oversight that this was not marked EXPORT_SYMBOL_GPL from the outset. Cc: Michal Hocko Cc: "JA(C)rA'me Glisse" Reviewed-by: Christoph Hellwig Signed-off-by: Dan Williams --- kernel/memremap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/memremap.c b/kernel/memremap.c index 5857267a4af5..4478e4688bb7 100644 --- a/kernel/memremap.c +++ b/kernel/memremap.c @@ -257,7 +257,7 @@ void *devm_memremap_pages(struct device *dev, struct dev_pagemap *pgmap) pgmap_radix_release(res, pgoff); return ERR_PTR(error); } -EXPORT_SYMBOL(devm_memremap_pages); +EXPORT_SYMBOL_GPL(devm_memremap_pages); unsigned long vmem_altmap_offset(struct vmem_altmap *altmap) {