diff --git a/sys/amd64/amd64/trap.c b/sys/amd64/amd64/trap.c
index 751d5f57516..b0392849fd8 100644
--- a/sys/amd64/amd64/trap.c
+++ b/sys/amd64/amd64/trap.c
@@ -716,13 +716,13 @@ trap_pfault(frame, usermode, eva)
 		/*
 		 * Grow the stack if necessary
 		 */
-		/* grow_stack returns false only if va falls into
+		/* vm_map_growstack fails only if va falls into
 		 * a growable stack region and the stack growth
-		 * fails.  It returns true if va was not within
+		 * fails.  It succeeds if va was not within
 		 * a growable stack region, or if the stack 
 		 * growth succeeded.
 		 */
-		if (!grow_stack (p, va))
+		if (vm_map_growstack(p, va) != KERN_SUCCESS)
 			rv = KERN_FAILURE;
 		else
 			/* Fault in the user page: */
@@ -901,7 +901,7 @@ int trapwrite(addr)
 	++p->p_lock;
 	PROC_UNLOCK(p);
 
-	if (!grow_stack (p, va))
+	if (vm_map_growstack(p, va) != KERN_SUCCESS)
 		rv = KERN_FAILURE;
 	else
 		/*
diff --git a/sys/amd64/amd64/vm_machdep.c b/sys/amd64/amd64/vm_machdep.c
index 53b871a8b00..59f3f89b2b5 100644
--- a/sys/amd64/amd64/vm_machdep.c
+++ b/sys/amd64/amd64/vm_machdep.c
@@ -514,20 +514,6 @@ cpu_reset_real()
 	while(1);
 }
 
-int
-grow_stack(p, sp)
-	struct proc *p;
-	u_int sp;
-{
-	int rv;
-
-	rv = vm_map_growstack (p, sp);
-	if (rv != KERN_SUCCESS)
-		return (0);
-
-	return (1);
-}
-
 /*
  * Software interrupt handler for queued VM system processing.
  */   
diff --git a/sys/i386/i386/trap.c b/sys/i386/i386/trap.c
index 751d5f57516..b0392849fd8 100644
--- a/sys/i386/i386/trap.c
+++ b/sys/i386/i386/trap.c
@@ -716,13 +716,13 @@ trap_pfault(frame, usermode, eva)
 		/*
 		 * Grow the stack if necessary
 		 */
-		/* grow_stack returns false only if va falls into
+		/* vm_map_growstack fails only if va falls into
 		 * a growable stack region and the stack growth
-		 * fails.  It returns true if va was not within
+		 * fails.  It succeeds if va was not within
 		 * a growable stack region, or if the stack 
 		 * growth succeeded.
 		 */
-		if (!grow_stack (p, va))
+		if (vm_map_growstack(p, va) != KERN_SUCCESS)
 			rv = KERN_FAILURE;
 		else
 			/* Fault in the user page: */
@@ -901,7 +901,7 @@ int trapwrite(addr)
 	++p->p_lock;
 	PROC_UNLOCK(p);
 
-	if (!grow_stack (p, va))
+	if (vm_map_growstack(p, va) != KERN_SUCCESS)
 		rv = KERN_FAILURE;
 	else
 		/*
diff --git a/sys/i386/i386/vm_machdep.c b/sys/i386/i386/vm_machdep.c
index 53b871a8b00..59f3f89b2b5 100644
--- a/sys/i386/i386/vm_machdep.c
+++ b/sys/i386/i386/vm_machdep.c
@@ -514,20 +514,6 @@ cpu_reset_real()
 	while(1);
 }
 
-int
-grow_stack(p, sp)
-	struct proc *p;
-	u_int sp;
-{
-	int rv;
-
-	rv = vm_map_growstack (p, sp);
-	if (rv != KERN_SUCCESS)
-		return (0);
-
-	return (1);
-}
-
 /*
  * Software interrupt handler for queued VM system processing.
  */