convert get_sb_single() users

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/drivers/xen/xenfs/super.c b/drivers/xen/xenfs/super.c
index d6662b7..f6339d1 100644
--- a/drivers/xen/xenfs/super.c
+++ b/drivers/xen/xenfs/super.c
@@ -121,17 +121,17 @@
 	return rc;
 }
 
-static int xenfs_get_sb(struct file_system_type *fs_type,
+static int xenfs_mount(struct file_system_type *fs_type,
 			int flags, const char *dev_name,
-			void *data, struct vfsmount *mnt)
+			void *data)
 {
-	return get_sb_single(fs_type, flags, data, xenfs_fill_super, mnt);
+	return mount_single(fs_type, flags, data, xenfs_fill_super);
 }
 
 static struct file_system_type xenfs_type = {
 	.owner =	THIS_MODULE,
 	.name =		"xenfs",
-	.get_sb =	xenfs_get_sb,
+	.mount =	xenfs_mount,
 	.kill_sb =	kill_litter_super,
 };