convert get_sb_single() users

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/security/inode.c b/security/inode.c
index cb8f47c..c4df2fb 100644
--- a/security/inode.c
+++ b/security/inode.c
@@ -131,17 +131,17 @@
 	return simple_fill_super(sb, SECURITYFS_MAGIC, files);
 }
 
-static int get_sb(struct file_system_type *fs_type,
+static struct dentry *get_sb(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, fill_super, mnt);
+	return mount_single(fs_type, flags, data, fill_super);
 }
 
 static struct file_system_type fs_type = {
 	.owner =	THIS_MODULE,
 	.name =		"securityfs",
-	.get_sb =	get_sb,
+	.mount =	get_sb,
 	.kill_sb =	kill_litter_super,
 };