NFS nonzero preempt_count 2/2

When unmounting an NFS filesystem, I saw printk's reporting that NFS daemons exited with nonzero preempt_counts. Fixing this up so they no longer give the warning seems like a good idea.

Patch attempting to do this for lockd below.

Cheers,
Bill

===== fs/lockd/svc.c 1.10 vs edited =====

@@ -203,6 +203,7 @@
 	rpciod_down();
 
 	/* Release module */
+	unlock_kernel();
 	MOD_DEC_USE_COUNT;
 }