--- linux-2.4.18-wt2/include/asm-alpha/processor.h-orig	Sat Mar 16 22:41:26 2002
+++ linux-2.4.18-wt2/include/asm-alpha/processor.h	Sat Mar 16 22:41:38 2002
@@ -114,6 +114,7 @@
 extern void start_thread(struct pt_regs *, unsigned long, unsigned long);
 
 struct task_struct;
+struct mm_struct;
 
 /* Free all resources held by a thread. */
 extern void release_thread(struct task_struct *);