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Convert fake page allocs to use the zone allocator, thus eliminating the

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private pool management code in here.
This commit is contained in:
David Greenman 1998-10-22 01:45:29 +00:00
parent bb7db2c011
commit 24166bb84b
1 changed files with 8 additions and 14 deletions
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22
sys/vm/device_pager.c
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@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* @(#)device_pager.c 8.1 (Berkeley) 6/11/93
* $Id: device_pager.c,v 1.32 1998/10/13 08:24:42 dg Exp $
* $Id: device_pager.c,v 1.33 1998/10/21 23:06:50 dg Exp $
*/
#include <sys/param.h>
@ -50,6 +50,7 @@
#include <vm/vm_object.h>
#include <vm/vm_page.h>
#include <vm/vm_pager.h>
#include <vm/vm_zone.h>
static void dev_pager_init __P((void));
static vm_object_t dev_pager_alloc __P((void *, vm_ooffset_t, vm_prot_t,
@ -64,8 +65,8 @@ static boolean_t dev_pager_haspage __P((vm_object_t, vm_pindex_t, int *,
/* list of device pager objects */
static struct pagerlst dev_pager_object_list;
/* list of available vm_page_t's */
static TAILQ_HEAD(, vm_page) dev_pager_fakelist;
static vm_zone_t fakepg_zone;
static struct vm_zone fakepg_zone_store;
static vm_page_t dev_pager_getfake __P((vm_offset_t));
static void dev_pager_putfake __P((vm_page_t));
@ -86,7 +87,8 @@ static void
dev_pager_init()
{
TAILQ_INIT(&dev_pager_object_list);
TAILQ_INIT(&dev_pager_fakelist);
fakepg_zone = &fakepg_zone_store;
zinitna(fakepg_zone, NULL, "DP fakepg", sizeof(struct vm_page), 0, 0, 2);
}
static vm_object_t
@ -257,15 +259,7 @@ dev_pager_getfake(paddr)
vm_page_t m;
int i;
if (TAILQ_FIRST(&dev_pager_fakelist) == NULL) {
m = (vm_page_t) malloc(PAGE_SIZE * 2, M_VMPGDATA, M_WAITOK);
for (i = (PAGE_SIZE * 2) / sizeof(*m); i > 0; i--) {
TAILQ_INSERT_TAIL(&dev_pager_fakelist, m, pageq);
m++;
}
}
m = TAILQ_FIRST(&dev_pager_fakelist);
TAILQ_REMOVE(&dev_pager_fakelist, m, pageq);
m = zalloc(fakepg_zone);
m->flags = PG_BUSY | PG_FICTITIOUS;
m->valid = VM_PAGE_BITS_ALL;
@ -287,5 +281,5 @@ dev_pager_putfake(m)
{
if (!(m->flags & PG_FICTITIOUS))
panic("dev_pager_putfake: bad page");
TAILQ_INSERT_TAIL(&dev_pager_fakelist, m, pageq);
zfree(fakepg_zone, m);
}