diff -NurpP --minimal linux-2.4.21-vs1.21/Makefile linux-2.4.21-vs1.22/Makefile
--- linux-2.4.21-vs1.21/Makefile	Thu Dec 11 00:38:46 2003
+++ linux-2.4.21-vs1.22/Makefile	Sat Dec 13 18:24:54 2003
@@ -1,7 +1,7 @@
 VERSION = 2
 PATCHLEVEL = 4
 SUBLEVEL = 21
-EXTRAVERSION = -vs1.21
+EXTRAVERSION = -vs1.22
 
 KERNELRELEASE=$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
 
diff -NurpP --minimal linux-2.4.21-vs1.21/kernel/vcontext.c linux-2.4.21-vs1.22/kernel/vcontext.c
--- linux-2.4.21-vs1.21/kernel/vcontext.c	Thu Dec 11 00:38:51 2003
+++ linux-2.4.21-vs1.22/kernel/vcontext.c	Sat Dec 13 18:24:55 2003
@@ -152,15 +152,17 @@ static void vx_alloc_info(void)
 	}
 }
 
+static spinlock_t ctx_ref_lock = SPIN_LOCK_UNLOCKED;
+
 /*
  *	Increase the reference count on the context_info member of a task
  */
 void vx_assign_info (struct task_struct *p)
 {
-	down_write (&uts_sem);
+	spin_lock (&ctx_ref_lock);
 	if (p->s_info)
 		atomic_inc(&p->s_info->refcount);
-	up_write (&uts_sem);
+	spin_unlock (&ctx_ref_lock);
 }
 
 /*
@@ -169,14 +171,14 @@ void vx_assign_info (struct task_struct 
  */
 void vx_release_info (struct task_struct *p)
 {
-	down_write (&uts_sem);
+	spin_lock (&ctx_ref_lock);
 	if (p->s_info) {
 		if (atomic_dec_and_test(&p->s_info->refcount)) {
 			kfree(p->s_info);
 			p->s_info = NULL;
 		}
 	}
-	up_write (&uts_sem);
+	spin_unlock (&ctx_ref_lock);
 }
 
 /*