int ll_get_grouplock(struct inode *inode, struct file *file, unsigned long arg);
int ll_put_grouplock(struct inode *inode, struct file *file, unsigned long arg);
int ll_fid2path(struct inode *inode, void *arg);
-int ll_data_version(struct inode *inode, __u64 *data_version, int extent_lock);
+int ll_data_version(struct inode *inode, __u64 *data_version, int flags);
int ll_hsm_release(struct inode *inode);
struct obd_client_handle *ll_lease_open(struct inode *inode, struct file *file,