page_keyid() is inline funcation that uses lookup_page_ext(). KVM is
going to use page_keyid() and since KVM can be built as a module
lookup_page_ext() has to be exported.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
---
mm/page_ext.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/mm/page_ext.c b/mm/page_ext.c
index c52b77c13cd9..eeca218891e7 100644
--- a/mm/page_ext.c
+++ b/mm/page_ext.c
@@ -139,6 +139,7 @@ struct page_ext *lookup_page_ext(const struct page *page)
MAX_ORDER_NR_PAGES);
return get_entry(base, index);
}
+EXPORT_SYMBOL_GPL(lookup_page_ext);
static int __init alloc_node_page_ext(int nid)
{
@@ -209,6 +210,7 @@ struct page_ext *lookup_page_ext(const struct page *page)
return NULL;
return get_entry(section->page_ext, pfn);
}
+EXPORT_SYMBOL_GPL(lookup_page_ext);
static void *__meminit alloc_page_ext(size_t size, int nid)
{
--
2.21.0
