xnu-517.3.7.tar.gz

[apple/xnu.git] / osfmk / vm / vm_object.h

diff --git a/osfmk/vm/vm_object.h b/osfmk/vm/vm_object.h
index 679ea7eb98156178bd5fd516d8e5345b21081e4e..54fc6f9a9d3aa4b42fe5973a2f92ef8e9e99a2aa 100644 (file)
--- a/osfmk/vm/vm_object.h
+++ b/osfmk/vm/vm_object.h
@@ -3,19 +3,22 @@
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
  * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
  * 
  * @APPLE_LICENSE_HEADER_END@
  */
@@ -262,12 +265,13 @@ struct vm_object {
                                                   request queue */
 
        vm_object_offset_t      last_alloc;     /* last allocation offset */
+       vm_object_offset_t      sequential;     /* sequential access size */
        vm_size_t               cluster_size;   /* size of paging cluster */
 #if    MACH_PAGEMAP
        vm_external_map_t       existence_map;  /* bitmap of pages written to
                                                 * backing storage */
 #endif /* MACH_PAGEMAP */
-       int                     cow_hint;       /* last page present in     */
+       vm_offset_t             cow_hint;       /* last page present in     */
                                                /* shadow but not in object */
 #if    MACH_ASSERT
        struct vm_object        *paging_object; /* object which pages to be
@@ -421,7 +425,8 @@ __private_extern__ boolean_t        vm_object_shadow(
                                        vm_object_size_t        length);
 
 __private_extern__ void                vm_object_collapse(
-                                       vm_object_t     object);
+                                       vm_object_t             object,
+                                       vm_object_offset_t      offset);
 
 __private_extern__ boolean_t   vm_object_copy_quickly(
                                vm_object_t             *_object,