convert get_sb_single() users

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c
index 74d9867..47cc446 100644
--- a/arch/s390/hypfs/inode.c
+++ b/arch/s390/hypfs/inode.c
@@ -316,10 +316,10 @@
 	return 0;
 }
 
-static int hypfs_get_super(struct file_system_type *fst, int flags,
-			const char *devname, void *data, struct vfsmount *mnt)
+static struct dentry *hypfs_mount(struct file_system_type *fst, int flags,
+			const char *devname, void *data)
 {
-	return get_sb_single(fst, flags, data, hypfs_fill_super, mnt);
+	return mount_single(fst, flags, data, hypfs_fill_super);
 }
 
 static void hypfs_kill_super(struct super_block *sb)
@@ -455,7 +455,7 @@
 static struct file_system_type hypfs_type = {
 	.owner		= THIS_MODULE,
 	.name		= "s390_hypfs",
-	.get_sb		= hypfs_get_super,
+	.mount		= hypfs_mount,
 	.kill_sb	= hypfs_kill_super
 };