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Added prototype for new routine "vm_page_set_validclean" and initial

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declarations for the prezeroed pages mechanism.
This commit is contained in:
John Dyson 1995-09-03 20:11:26 +00:00
parent 758f725332
commit 10ad4d483c
1 changed files with 9 additions and 1 deletions
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10
sys/vm/vm_page.h
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@ -61,7 +61,7 @@
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*
* $Id: vm_page.h,v 1.18 1995/04/23 08:05:49 bde Exp $
* $Id: vm_page.h,v 1.19 1995/07/13 08:48:38 davidg Exp $
*/
/*
@ -132,6 +132,7 @@ struct vm_page {
#define PG_FICTITIOUS 0x0100 /* physical page doesn't exist (O) */
#define PG_WRITEABLE 0x0200 /* page is mapped writeable */
#define PG_MAPPED 0x0400 /* page is mapped */
#define PG_ZERO 0x0800 /* page is zeroed */
#define PG_REFERENCED 0x1000 /* page has been referenced */
#define PG_CACHE 0x4000 /* On VMIO cache */
#define PG_FREE 0x8000 /* page is in free list */
@ -168,9 +169,14 @@ struct vm_page {
* active
* Pages that are "active" i.e. they have been
* recently referenced.
*
* zero
* Pages that are really free and have been pre-zeroed
*
*/
extern struct pglist vm_page_queue_free; /* memory free queue */
extern struct pglist vm_page_queue_zero; /* zeroed memory free queue */
extern struct pglist vm_page_queue_active; /* active memory queue */
extern struct pglist vm_page_queue_inactive; /* inactive memory queue */
extern struct pglist vm_page_queue_cache; /* cache memory queue */
@ -222,6 +228,7 @@ extern vm_offset_t last_phys_addr; /* physical address for last_page */
#define VM_ALLOC_NORMAL 0
#define VM_ALLOC_INTERRUPT 1
#define VM_ALLOC_SYSTEM 2
#define VM_ALLOC_ZERO 0x80
void vm_page_activate __P((vm_page_t));
vm_page_t vm_page_alloc __P((vm_object_t, vm_offset_t, int));
@ -241,6 +248,7 @@ void vm_page_set_dirty __P((vm_page_t, int, int));
void vm_page_set_clean __P((vm_page_t, int, int));
int vm_page_is_clean __P((vm_page_t, int, int));
void vm_page_set_valid __P((vm_page_t, int, int));
void vm_page_set_validclean __P((vm_page_t, int, int));
void vm_page_set_invalid __P((vm_page_t, int, int));
int vm_page_is_valid __P((vm_page_t, int, int));
void vm_page_test_dirty __P((vm_page_t));