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;