From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pl0-f70.google.com (mail-pl0-f70.google.com [209.85.160.70]) by kanga.kvack.org (Postfix) with ESMTP id 4F02C6B0005 for ; Wed, 23 May 2018 01:20:21 -0400 (EDT) Received: by mail-pl0-f70.google.com with SMTP id bd7-v6so13558568plb.20 for ; Tue, 22 May 2018 22:20:21 -0700 (PDT) Received: from mga04.intel.com (mga04.intel.com. [192.55.52.120]) by mx.google.com with ESMTPS id y34-v6si18372184plb.317.2018.05.22.22.20.20 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 22 May 2018 22:20:20 -0700 (PDT) Subject: [PATCH v2 1/7] mm, devm_memremap_pages: Mark devm_memremap_pages() EXPORT_SYMBOL_GPL From: Dan Williams Date: Tue, 22 May 2018 22:10:22 -0700 Message-ID: <152705222281.21414.13452614856895978739.stgit@dwillia2-desk3.amr.corp.intel.com> In-Reply-To: <152705221686.21414.771870778478134768.stgit@dwillia2-desk3.amr.corp.intel.com> References: <152705221686.21414.771870778478134768.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 895e6b76b25e..c614645227a7 100644 --- a/kernel/memremap.c +++ b/kernel/memremap.c @@ -429,7 +429,7 @@ 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) {