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From: Dan Williams <dan.j.williams@intel.com>
To: linux-nvdimm@lists.01.org
Cc: "Michal Hocko" <mhocko@suse.com>,
	jack@suse.cz, david@fromorbit.com, linux-kernel@vger.kernel.org,
	linux-xfs@vger.kernel.org, "Jérôme Glisse" <jglisse@redhat.com>,
	linux-fsdevel@vger.kernel.org, hch@lst.de
Subject: [PATCH v6 10/15] memremap: mark devm_memremap_pages() EXPORT_SYMBOL_GPL
Date: Thu, 15 Mar 2018 08:52:18 -0700	[thread overview]
Message-ID: <152112913855.24669.14758139703848244412.stgit@dwillia2-desk3.amr.corp.intel.com> (raw)
In-Reply-To: <152112908134.24669.10222746224538377035.stgit@dwillia2-desk3.amr.corp.intel.com>

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 <mhocko@suse.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: "Jérôme Glisse" <jglisse@redhat.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
 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)
 {

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  parent reply	other threads:[~2018-03-15 15:55 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-15 15:51 [PATCH v6 00/15] dax: fix dma vs truncate/hole-punch Dan Williams
2018-03-15 15:51 ` [PATCH v6 01/15] dax: store pfns in the radix Dan Williams
2018-03-15 15:51 ` [PATCH v6 02/15] fs, dax: prepare for dax-specific address_space_operations Dan Williams
2018-03-16 18:59   ` Christoph Hellwig
2018-03-15 15:51 ` [PATCH v6 03/15] block, dax: remove dead code in blkdev_writepages() Dan Williams
2018-03-16 18:59   ` Christoph Hellwig
2018-03-15 15:51 ` [PATCH v6 04/15] xfs, dax: introduce xfs_dax_aops Dan Williams
2018-03-16 19:00   ` Christoph Hellwig
2018-03-15 15:51 ` [PATCH v6 05/15] ext4, dax: introduce ext4_dax_aops Dan Williams
2018-03-15 15:51 ` [PATCH v6 06/15] ext2, dax: introduce ext2_dax_aops Dan Williams
2018-03-18  4:02   ` kbuild test robot
2018-03-18  4:02   ` [RFC PATCH] ext2, dax: ext2_dax_aops can be static kbuild test robot
2018-03-15 15:52 ` [PATCH v6 07/15] fs, dax: use page->mapping to warn if truncate collides with a busy page Dan Williams
2018-03-18  6:26   ` kbuild test robot
2018-03-15 15:52 ` [PATCH v6 08/15] mm, dax: enable filesystems to trigger dev_pagemap ->page_free callbacks Dan Williams
2018-03-15 15:52 ` [PATCH v6 09/15] mm, dev_pagemap: introduce CONFIG_DEV_PAGEMAP_OPS Dan Williams
2018-03-15 15:52 ` Dan Williams [this message]
2018-03-15 15:52 ` [PATCH v6 11/15] mm, fs, dax: handle layout changes to pinned dax mappings Dan Williams
2018-03-16 19:01   ` Christoph Hellwig
2018-03-17 22:14   ` kbuild test robot
2018-03-15 15:52 ` [PATCH v6 12/15] xfs: require mmap lock for xfs_break_layouts() Dan Williams
2018-03-16 19:04   ` Christoph Hellwig
2018-03-16 19:10     ` Dan Williams
2018-03-19 17:33   ` Darrick J. Wong
2018-03-19 17:57     ` Dan Williams
2018-03-19 18:19       ` Darrick J. Wong
2018-03-19 18:34         ` Dan Williams
2018-03-19 19:45       ` Christoph Hellwig
2018-03-19 20:10         ` Dan Williams
2018-03-19 21:14           ` Christoph Hellwig
2018-03-15 15:52 ` [PATCH v6 13/15] xfs: communicate lock drop events from xfs_break_layouts() Dan Williams
2018-03-16 19:08   ` Christoph Hellwig
2018-03-15 15:52 ` [PATCH v6 14/15] xfs: prepare xfs_break_layouts() for another layout type Dan Williams
2018-03-16 19:08   ` Christoph Hellwig
2018-03-19 17:45   ` Darrick J. Wong
2018-03-19 18:09     ` Dan Williams
2018-03-15 15:52 ` [PATCH v6 15/15] xfs, dax: introduce xfs_break_dax_layouts() Dan Williams
2018-03-16 19:09   ` Christoph Hellwig
2018-03-17 22:11   ` kbuild test robot
2018-03-17 23:47   ` kbuild test robot

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