locks: rename lock-manager ops

Both the filesystem and the lock manager can associate operations with a
lock.  Confusingly, one of them (fl_release_private) actually has the
same name in both operation structures.

It would save some confusion to give the lock-manager ops different
names.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking
index 57d827d6..82e8e52 100644
--- a/Documentation/filesystems/Locking
+++ b/Documentation/filesystems/Locking
@@ -338,21 +338,21 @@
 
 ----------------------- lock_manager_operations ---------------------------
 prototypes:
-	int (*fl_compare_owner)(struct file_lock *, struct file_lock *);
-	void (*fl_notify)(struct file_lock *);  /* unblock callback */
-	int (*fl_grant)(struct file_lock *, struct file_lock *, int);
-	void (*fl_release_private)(struct file_lock *);
-	void (*fl_break)(struct file_lock *); /* break_lease callback */
-	int (*fl_change)(struct file_lock **, int);
+	int (*lm_compare_owner)(struct file_lock *, struct file_lock *);
+	void (*lm_notify)(struct file_lock *);  /* unblock callback */
+	int (*lm_grant)(struct file_lock *, struct file_lock *, int);
+	void (*lm_release_private)(struct file_lock *);
+	void (*lm_break)(struct file_lock *); /* break_lease callback */
+	int (*lm_change)(struct file_lock **, int);
 
 locking rules:
 			file_lock_lock	may block
-fl_compare_owner:	yes		no
-fl_notify:		yes		no
-fl_grant:		no		no
-fl_release_private:	maybe		no
-fl_break:		yes		no
-fl_change		yes		no
+lm_compare_owner:	yes		no
+lm_notify:		yes		no
+lm_grant:		no		no
+lm_release_private:	maybe		no
+lm_break:		yes		no
+lm_change		yes		no
 
 --------------------------- buffer_head -----------------------------------
 prototypes: