59 lines
1.4 KiB
C
Executable File
59 lines
1.4 KiB
C
Executable File
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
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/* All Rights Reserved */
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/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T */
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/* The copyright notice above does not evidence any */
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/* actual or intended publication of such source code. */
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#ifndef _SYS_FS_SWAPNODE_H
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#define _SYS_FS_SWAPNODE_H
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#pragma ident "@(#)swapnode.h 1.12 93/05/25 SMI"
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct swapnode {
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struct swapnode *swap_next;
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u_int swap_vnum; /* Unique id of this swapnode */
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struct vnode swap_vnode;
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};
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/*
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* Macros to convert a vnode to a swapnode, and vice versa.
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*/
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#define VPTOSWAP(vp) ((struct swapnode *)((vp)->v_data))
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#define SWAPTOVP(swap) (&(swap)->swap_vnode)
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/*
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* pointer to swapfs global data structures
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*/
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extern int swapfs_minfree; /* amount of availrmem (in pages) */
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/* that is unavailable to swapfs */
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extern int swapfs_desfree;
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extern struct vnodeops swap_vnodeops;
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extern struct vfsops swap_vfsops;
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extern struct vnode *swapfs_getvp(u_int);
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#ifdef SWAPFS_DEBUG
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extern int swapfs_debug;
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#define SWAPFS_PRINT(X, S, Y1, Y2, Y3, Y4, Y5) \
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if (swapfs_debug & (X)) \
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printf(S, Y1, Y2, Y3, Y4, Y5);
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#define SWAP_SUBR 0x01
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#define SWAP_VOPS 0x02
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#define SWAP_VFSOPS 0x04
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#define SWAP_PGC 0x08
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#define SWAP_PUTP 0x10
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#else /* SWAPFS_DEBUG */
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#define SWAPFS_PRINT(X, S, Y1, Y2, Y3, Y4, Y5)
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#endif /* SWAPFS_DEBUG */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_FS_SWAPNODE_H */
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