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-rw-r--r--arch/x86/include/asm/io.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h
index b8237d8a1e0c..787abc48ea61 100644
--- a/arch/x86/include/asm/io.h
+++ b/arch/x86/include/asm/io.h
@@ -323,6 +323,9 @@ extern bool is_early_ioremap_ptep(pte_t *ptep);
#include <xen/xen.h>
struct bio_vec;
+extern bool xen_page_phys_mergeable(const struct page *p1,
+ const struct page *p2);
+
extern bool xen_biovec_phys_mergeable(const struct bio_vec *vec1,
const struct bio_vec *vec2);