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.

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31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 * from: @(#)swap_pager.h 7.1 (Berkeley) 12/5/90
39 * $FreeBSD: head/sys/vm/swap_pager.h 92727 2002-03-19 22:20:14Z alfred $
40 */
41
42/*
43 * Modifications to the block allocation data structure by John S. Dyson
44 * 18 Dec 93.
45 */
46
47#ifndef _SWAP_PAGER_

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79};
80
81#ifdef _KERNEL
82extern struct pagerlst swap_pager_un_object_list;
83extern int swap_pager_full;
84extern struct blist *swapblist;
85extern vm_zone_t swap_zone;
86
87void swap_pager_putpages(vm_object_t, vm_page_t *, int, boolean_t, int *);
88boolean_t swap_pager_haspage(vm_object_t object, vm_pindex_t pindex, int *before, int *after);
89
90int swap_pager_swp_alloc(vm_object_t, int);
91void swap_pager_copy(vm_object_t, vm_object_t, vm_pindex_t, int);
92void swap_pager_freespace(vm_object_t, vm_pindex_t, vm_size_t);
93void swap_pager_dmzspace(vm_object_t, vm_pindex_t, vm_size_t);
94void swap_pager_swap_init(void);
95int swap_pager_reserve(vm_object_t, vm_pindex_t, vm_size_t);
96
97/*
98 * newswap functions
99 */
100
101void swap_pager_page_removed(vm_page_t, vm_object_t);
102
103/* choose underlying swap device and queue up I/O */
104struct buf;
105void swstrategy(struct buf *bp); /* probably needs to move elsewhere */
106
107#endif /* _KERNEL */
108#endif /* _SWAP_PAGER_ */