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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License, Version 1.0 only
      6  * (the "License").  You may not use this file except in compliance
      7  * with the License.
      8  *
      9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10  * or http://www.opensolaris.org/os/licensing.
     11  * See the License for the specific language governing permissions
     12  * and limitations under the License.
     13  *
     14  * When distributing Covered Code, include this CDDL HEADER in each
     15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     16  * If applicable, add the following below this CDDL HEADER, with the
     17  * fields enclosed by brackets "[]" replaced with your own identifying
     18  * information: Portions Copyright [yyyy] [name of copyright owner]
     19  *
     20  * CDDL HEADER END
     21  */
     22 /*
     23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
     28 /*	  All Rights Reserved  	*/
     29 
     30 
     31 #ifndef	_SYS_FS_SWAPNODE_H
     32 #define	_SYS_FS_SWAPNODE_H
     33 
     34 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     35 
     36 #ifdef	__cplusplus
     37 extern "C" {
     38 #endif
     39 
     40 /*
     41  * pointer to swapfs global data structures
     42  */
     43 extern pgcnt_t swapfs_minfree;		/* amount of availrmem (in pages) */
     44 					/* that is unavailable to swapfs */
     45 extern pgcnt_t swapfs_desfree;
     46 
     47 extern pgcnt_t swapfs_reserve;		/* amount of availrmem (in pages) */
     48 					/* that is unavailable for swap */
     49 					/* reservation to non-priv processes */
     50 
     51 extern struct vnodeops *swap_vnodeops;
     52 extern struct vnode *swapfs_getvp(ulong_t);
     53 
     54 #ifdef SWAPFS_DEBUG
     55 extern int swapfs_debug;
     56 #define	SWAPFS_PRINT(X, S, Y1, Y2, Y3, Y4, Y5)	\
     57 	if (swapfs_debug & (X)) 		\
     58 		printf(S, Y1, Y2, Y3, Y4, Y5);
     59 #define	SWAP_SUBR	0x01
     60 #define	SWAP_VOPS	0x02
     61 #define	SWAP_VFSOPS	0x04
     62 #define	SWAP_PGC		0x08
     63 #define	SWAP_PUTP	0x10
     64 #else	/* SWAPFS_DEBUG */
     65 #define	SWAPFS_PRINT(X, S, Y1, Y2, Y3, Y4, Y5)
     66 #endif	/* SWAPFS_DEBUG */
     67 
     68 #ifdef	__cplusplus
     69 }
     70 #endif
     71 
     72 #endif	/* _SYS_FS_SWAPNODE_H */
     73