diff options
Diffstat (limited to 'sys/vm/vm_pager.h')
| -rw-r--r-- | sys/vm/vm_pager.h | 78 |
1 files changed, 14 insertions, 64 deletions
diff --git a/sys/vm/vm_pager.h b/sys/vm/vm_pager.h index 1cab34a..a367f4b 100644 --- a/sys/vm/vm_pager.h +++ b/sys/vm/vm_pager.h @@ -1,4 +1,3 @@ - /* * Copyright (c) 1990 University of Utah. * Copyright (c) 1991, 1993 @@ -37,56 +36,28 @@ * SUCH DAMAGE. * * @(#)vm_pager.h 8.4 (Berkeley) 1/12/94 - * $Id: vm_pager.h,v 1.6 1995/03/16 18:17:32 bde Exp $ + * $Id: vm_pager.h,v 1.7 1995/05/10 18:56:08 davidg Exp $ */ /* * Pager routine interface definition. - * For BSD we use a cleaner version of the internal pager interface. */ #ifndef _VM_PAGER_ #define _VM_PAGER_ -TAILQ_HEAD(pagerlst, pager_struct); - -struct pager_struct { - TAILQ_ENTRY(pager_struct) pg_list; /* links for list management */ - void *pg_handle; /* ext. handle (vp, dev, fp) */ - int pg_type; /* type of pager */ - struct pagerops *pg_ops; /* pager operations */ - void *pg_data; /* private pager data */ -}; - -/* pager types */ -#define PG_DFLT -1 -#define PG_SWAP 0 -#define PG_VNODE 1 -#define PG_DEVICE 2 - -/* flags */ -#define PG_CLUSTERGET 1 -#define PG_CLUSTERPUT 2 +TAILQ_HEAD(pagerlst, vm_object); struct pagerops { void (*pgo_init) __P((void)); /* Initialize pager. */ - vm_pager_t(*pgo_alloc) __P((void *, vm_size_t, vm_prot_t, vm_offset_t)); /* Allocate pager. */ - void (*pgo_dealloc) __P((vm_pager_t)); /* Disassociate. */ - int (*pgo_getpage) __P((vm_pager_t, vm_page_t, boolean_t)); - int (*pgo_getpages) __P((vm_pager_t, vm_page_t *, int, int, boolean_t)); /* Get (read) page. */ - int (*pgo_putpage) __P((vm_pager_t, vm_page_t, boolean_t)); - int (*pgo_putpages) __P((vm_pager_t, vm_page_t *, int, boolean_t, int *)); /* Put (write) page. */ - boolean_t(*pgo_haspage) __P((vm_pager_t, vm_offset_t)); /* Does pager have page? */ + vm_object_t (*pgo_alloc) __P((void *, vm_size_t, vm_prot_t, vm_offset_t)); /* Allocate pager. */ + void (*pgo_dealloc) __P((vm_object_t)); /* Disassociate. */ + int (*pgo_getpages) __P((vm_object_t, vm_page_t *, int, int)); /* Get (read) page. */ + int (*pgo_putpages) __P((vm_object_t, vm_page_t *, int, boolean_t, int *)); /* Put (write) page. */ + boolean_t (*pgo_haspage) __P((vm_object_t, vm_offset_t, int *, int *)); /* Does pager have page? */ + void (*pgo_sync) __P((void)); }; -#define VM_PAGER_ALLOC(h, s, p, o) (*(pg)->pg_ops->pgo_alloc)(h, s, p, o) -#define VM_PAGER_DEALLOC(pg) (*(pg)->pg_ops->pgo_dealloc)(pg) -#define VM_PAGER_GET(pg, m, s) (*(pg)->pg_ops->pgo_getpage)(pg, m, s) -#define VM_PAGER_GET_MULTI(pg, m, c, r, s) (*(pg)->pg_ops->pgo_getpages)(pg, m, c, r, s) -#define VM_PAGER_PUT(pg, m, s) (*(pg)->pg_ops->pgo_putpage)(pg, m, s) -#define VM_PAGER_PUT_MULTI(pg, m, c, s, rtval) (*(pg)->pg_ops->pgo_putpages)(pg, m, c, s, rtval) -#define VM_PAGER_HASPAGE(pg, o) (*(pg)->pg_ops->pgo_haspage)(pg, o) - /* * get/put return values * OK operation was successful @@ -104,41 +75,20 @@ struct pagerops { #define VM_PAGER_AGAIN 5 #ifdef KERNEL -extern struct pagerops *dfltpagerops; - -vm_pager_t vm_pager_allocate __P((int, void *, vm_size_t, vm_prot_t, vm_offset_t)); +vm_object_t vm_pager_allocate __P((objtype_t, void *, vm_size_t, vm_prot_t, vm_offset_t)); vm_page_t vm_pager_atop __P((vm_offset_t)); void vm_pager_bufferinit __P((void)); -void vm_pager_deallocate __P((vm_pager_t)); -int vm_pager_get_pages __P((vm_pager_t, vm_page_t *, int, int, boolean_t)); -boolean_t vm_pager_has_page __P((vm_pager_t, vm_offset_t)); +void vm_pager_deallocate __P((vm_object_t)); +int vm_pager_get_pages __P((vm_object_t, vm_page_t *, int, int)); +boolean_t vm_pager_has_page __P((vm_object_t, vm_offset_t, int *, int *)); void vm_pager_init __P((void)); -vm_pager_t vm_pager_lookup __P((struct pagerlst *, caddr_t)); +vm_object_t vm_pager_object_lookup __P((struct pagerlst *, void *)); vm_offset_t vm_pager_map_pages __P((vm_page_t *, int, boolean_t)); vm_offset_t vm_pager_map_page __P((vm_page_t)); -int vm_pager_put_pages __P((vm_pager_t, vm_page_t *, int, boolean_t, int *)); +int vm_pager_put_pages __P((vm_object_t, vm_page_t *, int, boolean_t, int *)); void vm_pager_sync __P((void)); void vm_pager_unmap_pages __P((vm_offset_t, int)); void vm_pager_unmap_page __P((vm_offset_t)); - -/* - * XXX compat with old interface - */ -#define vm_pager_get(p, m, s) \ -({ \ - vm_page_t ml[1]; \ - ml[0] = (m); \ - vm_pager_get_pages(p, ml, 1, 0, s); \ -}) - -#define vm_pager_put(p, m, s) \ -({ \ - int rtval; \ - vm_page_t ml[1]; \ - ml[0] = (m); \ - vm_pager_put_pages(p, ml, 1, s, &rtval); \ - rtval; \ -}) #endif #endif /* _VM_PAGER_ */ |
