--- Gnu-Mach/vm/vm_external.c	2020/09/02 04:45:27	1.1.1.2
+++ Gnu-Mach/vm/vm_external.c	2020/09/02 04:52:10	1.1.1.4
@@ -35,6 +35,7 @@
 #include <vm/vm_external.h>
 #include <mach/vm_param.h>
 #include <kern/assert.h>
+#include <string.h>
 
 
 
@@ -56,8 +57,7 @@ struct kmem_cache	vm_object_small_existe
 struct kmem_cache	vm_object_large_existence_map_cache;
 
 
-vm_external_t	vm_external_create(size)
-	vm_offset_t	size;
+vm_external_t	vm_external_create(vm_offset_t size)
 {
 	vm_external_t	result;
 	vm_size_t	bytes;
@@ -70,16 +70,16 @@ vm_external_t	vm_external_create(size)
 		result->existence_map =
 		 (char *) kmem_cache_alloc(&vm_object_small_existence_map_cache);
 		result->existence_size = SMALL_SIZE;
-	} else if (bytes <= LARGE_SIZE) {
+	} else {
 		result->existence_map =
 		 (char *) kmem_cache_alloc(&vm_object_large_existence_map_cache);
 		result->existence_size = LARGE_SIZE;
 	}
+	memset (result->existence_map, 0, result->existence_size);
 	return(result);
 }
 
-void		vm_external_destroy(e)
-	vm_external_t	e;
+void		vm_external_destroy(vm_external_t e)
 {
 	if (e == VM_EXTERNAL_NULL)
 		return;
@@ -97,8 +97,8 @@ void		vm_external_destroy(e)
 }
 
 vm_external_state_t _vm_external_state_get(e, offset)
-	vm_external_t	e;
-	vm_offset_t	offset;
+	const vm_external_t	e;
+	vm_offset_t		offset;
 {
 	unsigned
 	int		bit, byte;
@@ -115,10 +115,10 @@ vm_external_state_t _vm_external_state_g
 		VM_EXTERNAL_STATE_EXISTS : VM_EXTERNAL_STATE_ABSENT );
 }
 
-void		vm_external_state_set(e, offset, state)
-	vm_external_t	e;
-	vm_offset_t	offset;
-	vm_external_state_t state;
+void		vm_external_state_set(
+	vm_external_t		e,
+	vm_offset_t		offset,
+	vm_external_state_t 	state)
 {
 	unsigned
 	int		bit, byte;
@@ -140,13 +140,13 @@ void		vm_external_module_initialize(void
 	vm_size_t	size = (vm_size_t) sizeof(struct vm_external);
 
 	kmem_cache_init(&vm_external_cache, "vm_external", size, 0,
-			NULL, NULL, NULL, 0);
+			NULL, 0);
 
 	kmem_cache_init(&vm_object_small_existence_map_cache,
 			"small_existence_map", SMALL_SIZE, 0,
-			NULL, NULL, NULL, 0);
+			NULL, 0);
 
 	kmem_cache_init(&vm_object_large_existence_map_cache,
 			"large_existence_map", LARGE_SIZE, 0,
-			NULL, NULL, NULL, 0);
+			NULL, 0);
 }