diff options
Diffstat (limited to 'sys/vm/vm_pager.c')
| -rw-r--r-- | sys/vm/vm_pager.c | 76 |
1 files changed, 75 insertions, 1 deletions
diff --git a/sys/vm/vm_pager.c b/sys/vm/vm_pager.c index 0f11408..2dc6e7b 100644 --- a/sys/vm/vm_pager.c +++ b/sys/vm/vm_pager.c @@ -61,7 +61,7 @@ * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. * - * $Id: vm_pager.c,v 1.35 1998/02/23 08:22:40 dyson Exp $ + * $Id: vm_pager.c,v 1.36 1998/03/07 21:37:21 dyson Exp $ */ /* @@ -90,11 +90,85 @@ extern struct pagerops swappagerops; extern struct pagerops vnodepagerops; extern struct pagerops devicepagerops; +static int dead_pager_getpages __P((vm_object_t, vm_page_t *, int, int)); +static vm_object_t dead_pager_alloc __P((void *, vm_size_t, vm_prot_t, + vm_ooffset_t)); +static int dead_pager_putpages __P((vm_object_t, vm_page_t *, int, int, int *)); +static boolean_t dead_pager_haspage __P((vm_object_t, vm_pindex_t, int *, int *)); +static void dead_pager_dealloc __P((vm_object_t)); + +int +dead_pager_getpages(obj, ma, count, req) + vm_object_t obj; + vm_page_t *ma; + int count; + int req; +{ + return VM_PAGER_FAIL; +} + +vm_object_t +dead_pager_alloc(handle, size, prot, off) + void *handle; + vm_size_t size; + vm_prot_t prot; + vm_ooffset_t off; +{ + return NULL; +} + +int +dead_pager_putpages(object, m, count, flags, rtvals) + vm_object_t object; + vm_page_t *m; + int count; + int flags; + int *rtvals; +{ + int i; + for (i = 0; i < count; i++) { + rtvals[i] = VM_PAGER_AGAIN; + } + return VM_PAGER_AGAIN; +} + +int +dead_pager_haspage(object, pindex, prev, next) + vm_object_t object; + vm_pindex_t pindex; + int *prev; + int *next; +{ + if (prev) + *prev = 0; + if (next) + *next = 0; + return FALSE; +} + +void +dead_pager_dealloc(object) + vm_object_t object; +{ + return; +} + +struct pagerops deadpagerops = { + NULL, + dead_pager_alloc, + dead_pager_dealloc, + dead_pager_getpages, + dead_pager_putpages, + dead_pager_haspage, + NULL +}; + static struct pagerops *pagertab[] = { &defaultpagerops, /* OBJT_DEFAULT */ &swappagerops, /* OBJT_SWAP */ &vnodepagerops, /* OBJT_VNODE */ &devicepagerops, /* OBJT_DEVICE */ + &deadpagerops /* OBJT_DEAD */ }; static int npagers = sizeof(pagertab) / sizeof(pagertab[0]); |
