projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 619edcce KM |
1 | /* |
| 2 | * Copyright (c) 1990 University of Utah. | |
| 3 | * Copyright (c) 1991 The Regents of the University of California. | |
| 4 | * All rights reserved. | |
| 5 | * | |
| 6 | * This code is derived from software contributed to Berkeley by | |
| 7 | * the Systems Programming Group of the University of Utah Computer | |
| 8 | * Science Department. | |
| 9 | * | |
| 10 | * %sccs.include.redist.c% | |
| 11 | * | |
| 12 | * @(#)vnode_pager.h 7.1 (Berkeley) %G% | |
| 13 | */ | |
| 14 | ||
| 15 | #ifndef _VNODE_PAGER_ | |
| 16 | #define _VNODE_PAGER_ 1 | |
| 17 | ||
| 18 | /* | |
| 19 | * VNODE pager private data. | |
| 20 | */ | |
| 21 | struct vnpager { | |
| 22 | int vnp_flags; /* flags */ | |
| 23 | struct vnode *vnp_vp; /* vnode */ | |
| 24 | vm_size_t vnp_size; /* vnode current size */ | |
| 25 | }; | |
| 26 | typedef struct vnpager *vn_pager_t; | |
| 27 | ||
| 28 | #define VN_PAGER_NULL ((vn_pager_t)0) | |
| 29 | ||
| 30 | #define VNP_PAGING 0x01 /* vnode used for pageout */ | |
| 31 | #define VNP_CACHED 0x02 /* vnode is cached */ | |
| 32 | ||
| 33 | #ifdef KERNEL | |
| 34 | ||
| 35 | void vnode_pager_init(); | |
| 36 | vm_pager_t vnode_pager_alloc(); | |
| 37 | void vnode_pager_dealloc(); | |
| 38 | int vnode_pager_getpage(), vnode_pager_putpage(); | |
| 39 | boolean_t vnode_pager_haspage(); | |
| 40 | ||
| 41 | struct pagerops vnodepagerops = { | |
| 42 | vnode_pager_init, | |
| 43 | vnode_pager_alloc, | |
| 44 | vnode_pager_dealloc, | |
| 45 | vnode_pager_getpage, | |
| 46 | vnode_pager_putpage, | |
| 47 | vnode_pager_haspage | |
| 48 | }; | |
| 49 | ||
| 50 | #endif | |
| 51 | ||
| 52 | #endif /* _VNODE_PAGER_ */ |