--- zzzz-none-000/linux-3.10.107/fs/gfs2/super.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/fs/gfs2/super.h	2021-02-04 17:41:59.000000000 +0000
@@ -45,6 +45,7 @@
 extern void update_statfs(struct gfs2_sbd *sdp, struct buffer_head *m_bh,
 			  struct buffer_head *l_bh);
 extern int gfs2_statfs_sync(struct super_block *sb, int type);
+extern void gfs2_freeze_func(struct work_struct *work);
 
 extern struct file_system_type gfs2_fs_type;
 extern struct file_system_type gfs2meta_fs_type;