Commit 31c5bda3 authored Jul 26, 2018 by Dan Williams Committed by Linus Torvalds Jul 26, 2018

mm: fix exports that inadvertently make put_page() EXPORT_SYMBOL_GPL

Commit e7638488 ("mm: introduce MEMORY_DEVICE_FS_DAX and
CONFIG_DEV_PAGEMAP_OPS") added two EXPORT_SYMBOL_GPL() symbols, but
these symbols are required by the inlined put_page(), thus accidentally
making put_page() a GPL export only.  This breaks OpenAFS (at least).

Mark them EXPORT_SYMBOL() instead.

Link: http://lkml.kernel.org/r/153128611970.2928.11310692420711601254.stgit@dwillia2-desk3.amr.corp.intel.com


Fixes: e7638488 ("mm: introduce MEMORY_DEVICE_FS_DAX and CONFIG_DEV_PAGEMAP_OPS")
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Reported-by: Joe Gorse <jhgorse@gmail.com>
Reported-by: John Hubbard <jhubbard@nvidia.com>
Tested-by: Joe Gorse <jhgorse@gmail.com>
Tested-by: John Hubbard <jhubbard@nvidia.com>
Cc: Jérôme Glisse <jglisse@redhat.com>
Cc: Mark Vitale <mvitale@sinenomine.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent f075faa3

kernel/memremap.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -321,7 +321,7 @@ EXPORT_SYMBOL_GPL(get_dev_pagemap);

		#ifdef CONFIG_DEV_PAGEMAP_OPS
		DEFINE_STATIC_KEY_FALSE(devmap_managed_key);
		EXPORT_SYMBOL_GPL(devmap_managed_key);
		EXPORT_SYMBOL(devmap_managed_key);
		static atomic_t devmap_enable;

		/*
		@@ -362,5 +362,5 @@ void __put_devmap_managed_page(struct page *page)
		} else if (!count)
		__put_page(page);
		}
		EXPORT_SYMBOL_GPL(__put_devmap_managed_page);
		EXPORT_SYMBOL(__put_devmap_managed_page);
		#endif /* CONFIG_DEV_PAGEMAP_OPS */

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