diff options
Diffstat (limited to 'sys/vm/vm_object.h')
-rw-r--r-- | sys/vm/vm_object.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/sys/vm/vm_object.h b/sys/vm/vm_object.h index 74a6b6b..4cf72cb 100644 --- a/sys/vm/vm_object.h +++ b/sys/vm/vm_object.h @@ -61,7 +61,7 @@ * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. * - * $Id: vm_object.h,v 1.26 1995/12/14 09:55:05 phk Exp $ + * $Id: vm_object.h,v 1.27 1996/03/02 02:54:23 dyson Exp $ */ /* @@ -96,6 +96,7 @@ struct vm_object { int shadow_count; /* how many objects that this is a shadow for */ u_short flags; /* see below */ u_short paging_in_progress; /* Paging (in or out) so don't collapse or destroy */ + u_short behavior; /* see below */ int resident_page_count; /* number of resident pages */ vm_ooffset_t paging_offset; /* Offset into paging space */ struct vm_object *backing_object; /* object that I'm a shadow of */ @@ -130,6 +131,11 @@ struct vm_object { #define OBJ_MIGHTBEDIRTY 0x0100 /* object might be dirty */ #define OBJ_CLEANING 0x0200 + +#define OBJ_NORMAL 0x0 /* default behavior */ +#define OBJ_SEQUENTIAL 0x1 /* expect sequential accesses */ +#define OBJ_RANDOM 0x2 /* expect random accesses */ + #define IDX_TO_OFF(idx) (((vm_ooffset_t)(idx)) << PAGE_SHIFT) #define OFF_TO_IDX(off) ((vm_pindex_t)(((vm_ooffset_t)(off)) >> PAGE_SHIFT)) @@ -175,6 +181,7 @@ void vm_object_pmap_copy __P((vm_object_t, vm_pindex_t, vm_pindex_t)); void vm_object_pmap_remove __P((vm_object_t, vm_pindex_t, vm_pindex_t)); void vm_object_reference __P((vm_object_t)); void vm_object_shadow __P((vm_object_t *, vm_ooffset_t *, vm_size_t)); +void vm_object_madvise __P((vm_object_t, vm_pindex_t, int, int)); #endif /* KERNEL */ #endif /* _VM_OBJECT_ */ |