diff --git a/include/linux/dax.h b/include/linux/dax.h
index 24ad711..2983e52 100644
--- a/include/linux/dax.h
+++ b/include/linux/dax.h
@@ -37,9 +37,9 @@
 }
 
 ssize_t dax_iomap_rw(struct kiocb *iocb, struct iov_iter *iter,
-		struct iomap_ops *ops);
+		const struct iomap_ops *ops);
 int dax_iomap_fault(struct vm_area_struct *vma, struct vm_fault *vmf,
-			struct iomap_ops *ops);
+			const struct iomap_ops *ops);
 int dax_delete_mapping_entry(struct address_space *mapping, pgoff_t index);
 int dax_invalidate_mapping_entry(struct address_space *mapping, pgoff_t index);
 int dax_invalidate_mapping_entry_sync(struct address_space *mapping,
@@ -72,7 +72,7 @@
 	return 0;
 }
 int dax_iomap_pmd_fault(struct vm_area_struct *vma, unsigned long address,
-		pmd_t *pmd, unsigned int flags, struct iomap_ops *ops);
+		pmd_t *pmd, unsigned int flags, const struct iomap_ops *ops);
 #else
 static inline unsigned int dax_radix_order(void *entry)
 {
@@ -80,7 +80,7 @@
 }
 static inline int dax_iomap_pmd_fault(struct vm_area_struct *vma,
 		unsigned long address, pmd_t *pmd, unsigned int flags,
-		struct iomap_ops *ops)
+		const struct iomap_ops *ops)
 {
 	return VM_FAULT_FALLBACK;
 }