From patchwork Sat Mar 31 04:03:25 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Dan Williams X-Patchwork-Id: 10318621 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 8C95360467 for ; Sat, 31 Mar 2018 04:14:42 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7F0B02A395 for ; Sat, 31 Mar 2018 04:14:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 73FA62A3A3; Sat, 31 Mar 2018 04:14:42 +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 069E82A395 for ; Sat, 31 Mar 2018 04:14:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753013AbeCaENb (ORCPT ); Sat, 31 Mar 2018 00:13:31 -0400 Received: from mga04.intel.com ([192.55.52.120]:63461 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752972AbeCaENV (ORCPT ); Sat, 31 Mar 2018 00:13:21 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 30 Mar 2018 21:13:20 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.48,383,1517904000"; d="scan'208";a="216457100" Received: from dwillia2-desk3.jf.intel.com (HELO dwillia2-desk3.amr.corp.intel.com) ([10.54.39.16]) by fmsmga005.fm.intel.com with ESMTP; 30 Mar 2018 21:13:20 -0700 Subject: [PATCH v8 14/18] memremap: mark devm_memremap_pages() EXPORT_SYMBOL_GPL From: Dan Williams To: linux-nvdimm@lists.01.org Cc: Michal Hocko , =?utf-8?b?SsOpcsO0bWU=?= Glisse , Christoph Hellwig , david@fromorbit.com, linux-fsdevel@vger.kernel.org, linux-xfs@vger.kernel.org, linux-kernel@vger.kernel.org, jack@suse.cz, snitzer@redhat.com Date: Fri, 30 Mar 2018 21:03:25 -0700 Message-ID: <152246900495.36038.12673192605922080966.stgit@dwillia2-desk3.amr.corp.intel.com> In-Reply-To: <152246892890.36038.18436540150980653229.stgit@dwillia2-desk3.amr.corp.intel.com> References: <152246892890.36038.18436540150980653229.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: "Jérôme 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 07a6a405cf3d..4b0e17df8981 100644 --- a/kernel/memremap.c +++ b/kernel/memremap.c @@ -257,7 +257,7 @@ 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) {