struct file leakage

Hello!

Andrew, this is a patch from Alexey Kuznetsov for 2.6.16. I believe 2.6.17 still has this leak.

-------------------------------------------------------------

2.6.16 leaks like hell. While testing, I found massive leakage (reproduced in openvz) in:

*filp
*size-4096

And 1 object leaks in
*size-32
*size-64
*size-128

It is the fix for the first one. filp leaks in the bowels of namei.c.

Seems, size-4096 is file table leaking in expand_fdtables.

I have no idea what are the rest and why they show only accompaniing another leaks. Some debugging structs?

@@ -1774,8 +1774,15 @@ do_link:
 	if (error)
 		goto exit_dput;
 	error = __do_follow_link(&path, nd);
-	if (error)
+	if (error) {
+		/* Does someone understand code flow here? Or it is only
+		 * me so stupid? Anathema to whoever designed this non-sense
+		 * with "intent.open".
+		 */
+		if (!IS_ERR(nd->intent.open.file))
+			release_open_intent(nd);
 		return error;
+	}
 	nd->flags &= ~LOOKUP_PARENT;
 	if (nd->last_type == LAST_BIND)
 		goto ok;