From: Dan Williams <dan.j.williams@xxxxxxxxx>
Subject: mm: fix exports that inadvertently make put_page() EXPORT_SYMBOL_GPL
e76384884344 ("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@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: e76384884344 ("mm: introduce MEMORY_DEVICE_FS_DAX and CONFIG_DEV_PAGEMAP_OPS")
Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
Reported-by: Joe Gorse <jhgorse@xxxxxxxxx>
Reported-by: John Hubbard <jhubbard@xxxxxxxxxx>
Tested-by: Joe Gorse <jhgorse@xxxxxxxxx>
Tested-by: John Hubbard <jhubbard@xxxxxxxxxx>
Cc: Jérôme Glisse <jglisse@xxxxxxxxxx>
Cc: Mark Vitale <mvitale@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/memremap.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/kernel/memremap.c~mm-fix-exports-that-inadvertently-make-put_page-export_symbol_gpl
+++ a/kernel/memremap.c
@@ -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 pa
} 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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