From patchwork Thu Mar 15 15:52:18 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Dan Williams X-Patchwork-Id: 10285023 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id EBEDB6061F for ; Thu, 15 Mar 2018 16:04:44 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DC45628B38 for ; Thu, 15 Mar 2018 16:04:44 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CDA5E28B49; Thu, 15 Mar 2018 16:04:44 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 54B3D28B38 for ; Thu, 15 Mar 2018 16:04:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933006AbeCOQB0 (ORCPT ); Thu, 15 Mar 2018 12:01:26 -0400 Received: from mga04.intel.com ([192.55.52.120]:21918 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932983AbeCOQBY (ORCPT ); Thu, 15 Mar 2018 12:01:24 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 15 Mar 2018 09:01:24 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.48,311,1517904000"; d="scan'208";a="34161404" Received: from dwillia2-desk3.jf.intel.com (HELO dwillia2-desk3.amr.corp.intel.com) ([10.54.39.16]) by FMSMGA003.fm.intel.com with ESMTP; 15 Mar 2018 09:01:23 -0700 Subject: [PATCH v6 10/15] memremap: mark devm_memremap_pages() EXPORT_SYMBOL_GPL From: Dan Williams To: linux-nvdimm@lists.01.org Cc: Michal Hocko , Christoph Hellwig , =?utf-8?b?SsOpcsO0bWU=?= Glisse , david@fromorbit.com, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, jack@suse.cz, ross.zwisler@linux.intel.com, hch@lst.de, linux-kernel@vger.kernel.org Date: Thu, 15 Mar 2018 08:52:18 -0700 Message-ID: <152112913855.24669.14758139703848244412.stgit@dwillia2-desk3.amr.corp.intel.com> In-Reply-To: <152112908134.24669.10222746224538377035.stgit@dwillia2-desk3.amr.corp.intel.com> References: <152112908134.24669.10222746224538377035.stgit@dwillia2-desk3.amr.corp.intel.com> User-Agent: StGit/0.18-2-gc94f MIME-Version: 1.0 Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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: Christoph Hellwig Cc: "Jérôme Glisse" 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 72d0bb6fc47d..766cb9a487ae 100644 --- a/kernel/memremap.c +++ b/kernel/memremap.c @@ -430,7 +430,7 @@ void *devm_memremap_pages(struct device *dev, struct dev_pagemap *pgmap) devres_free(pgmap); return ERR_PTR(error); } -EXPORT_SYMBOL(devm_memremap_pages); +EXPORT_SYMBOL_GPL(devm_memremap_pages); unsigned long vmem_altmap_offset(struct vmem_altmap *altmap) {