xref: /titanic_44/usr/src/uts/common/vm/pvn.h (revision 20afa66e72e7c210ef1f9053d4bc8f5b60d1eeed)
17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * CDDL HEADER START
37c478bd9Sstevel@tonic-gate  *
47c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*f8bbc571SPavel Filipensky  * Common Development and Distribution License (the "License").
6*f8bbc571SPavel Filipensky  * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate  *
87c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate  * and limitations under the License.
127c478bd9Sstevel@tonic-gate  *
137c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate  *
197c478bd9Sstevel@tonic-gate  * CDDL HEADER END
207c478bd9Sstevel@tonic-gate  */
217c478bd9Sstevel@tonic-gate /*
22*f8bbc571SPavel Filipensky  * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
237c478bd9Sstevel@tonic-gate  * Use is subject to license terms.
247c478bd9Sstevel@tonic-gate  */
257c478bd9Sstevel@tonic-gate 
267c478bd9Sstevel@tonic-gate /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
277c478bd9Sstevel@tonic-gate /*	  All Rights Reserved  	*/
287c478bd9Sstevel@tonic-gate 
297c478bd9Sstevel@tonic-gate /*
307c478bd9Sstevel@tonic-gate  * University Copyright- Copyright (c) 1982, 1986, 1988
317c478bd9Sstevel@tonic-gate  * The Regents of the University of California
327c478bd9Sstevel@tonic-gate  * All Rights Reserved
337c478bd9Sstevel@tonic-gate  *
347c478bd9Sstevel@tonic-gate  * University Acknowledgment- Portions of this document are derived from
357c478bd9Sstevel@tonic-gate  * software developed by the University of California, Berkeley, and its
367c478bd9Sstevel@tonic-gate  * contributors.
377c478bd9Sstevel@tonic-gate  */
387c478bd9Sstevel@tonic-gate 
397c478bd9Sstevel@tonic-gate #ifndef	_VM_PVN_H
407c478bd9Sstevel@tonic-gate #define	_VM_PVN_H
417c478bd9Sstevel@tonic-gate 
427c478bd9Sstevel@tonic-gate #include <sys/buf.h>
437c478bd9Sstevel@tonic-gate #include <vm/seg.h>
447c478bd9Sstevel@tonic-gate 
457c478bd9Sstevel@tonic-gate #ifdef	__cplusplus
467c478bd9Sstevel@tonic-gate extern "C" {
477c478bd9Sstevel@tonic-gate #endif
487c478bd9Sstevel@tonic-gate 
497c478bd9Sstevel@tonic-gate #ifdef	_KERNEL
507c478bd9Sstevel@tonic-gate 
517c478bd9Sstevel@tonic-gate /*
527c478bd9Sstevel@tonic-gate  * VM - paged vnode.
537c478bd9Sstevel@tonic-gate  *
547c478bd9Sstevel@tonic-gate  * The VM system manages memory as a cache of paged vnodes.
557c478bd9Sstevel@tonic-gate  * This file desribes the interfaces to common subroutines
567c478bd9Sstevel@tonic-gate  * used to help implement the VM/file system routines.
577c478bd9Sstevel@tonic-gate  */
587c478bd9Sstevel@tonic-gate 
597c478bd9Sstevel@tonic-gate struct page	*pvn_read_kluster(struct vnode *vp, u_offset_t off,
607c478bd9Sstevel@tonic-gate 			struct seg *seg, caddr_t addr, u_offset_t *offp,
617c478bd9Sstevel@tonic-gate 			size_t *lenp, u_offset_t vp_off, size_t vp_len,
627c478bd9Sstevel@tonic-gate 			int isra);
637c478bd9Sstevel@tonic-gate struct page	*pvn_write_kluster(struct vnode *vp, struct page *pp,
647c478bd9Sstevel@tonic-gate 			u_offset_t *offp, size_t *lenp, u_offset_t vp_off,
657c478bd9Sstevel@tonic-gate 			size_t vp_len, int flags);
667c478bd9Sstevel@tonic-gate void		pvn_read_done(struct page *plist, int flags);
677c478bd9Sstevel@tonic-gate void		pvn_write_done(struct page *plist, int flags);
687c478bd9Sstevel@tonic-gate void		pvn_io_done(struct page *plist);
697c478bd9Sstevel@tonic-gate int		pvn_vplist_dirty(struct vnode *vp, u_offset_t off,
707c478bd9Sstevel@tonic-gate 			int (*putapage)(vnode_t *, struct page *, u_offset_t *,
717c478bd9Sstevel@tonic-gate 				size_t *, int, cred_t *),
727c478bd9Sstevel@tonic-gate 			int flags, struct cred *cred);
73*f8bbc571SPavel Filipensky void		pvn_vplist_setdirty(vnode_t *vp, int (*page_check)(page_t *));
747c478bd9Sstevel@tonic-gate int		pvn_getdirty(struct page *pp, int flags);
757c478bd9Sstevel@tonic-gate void		pvn_vpzero(struct vnode *vp, u_offset_t vplen, size_t zbytes);
767c478bd9Sstevel@tonic-gate int		pvn_getpages(
777c478bd9Sstevel@tonic-gate 			int (*getpage)(vnode_t *, u_offset_t, size_t, uint_t *,
787c478bd9Sstevel@tonic-gate 				struct page *[], size_t, struct seg *,
797c478bd9Sstevel@tonic-gate 				caddr_t, enum seg_rw, cred_t *),
807c478bd9Sstevel@tonic-gate 			struct vnode *vp, u_offset_t off, size_t len,
817c478bd9Sstevel@tonic-gate 			uint_t *protp, struct page **pl, size_t plsz,
827c478bd9Sstevel@tonic-gate 			struct seg *seg, caddr_t addr, enum seg_rw rw,
837c478bd9Sstevel@tonic-gate 			struct cred *cred);
847c478bd9Sstevel@tonic-gate void		pvn_plist_init(struct page *pp, struct page **pl, size_t plsz,
857c478bd9Sstevel@tonic-gate 			u_offset_t off, size_t io_len, enum seg_rw rw);
867c478bd9Sstevel@tonic-gate void		pvn_init(void);
877c478bd9Sstevel@tonic-gate 
887c478bd9Sstevel@tonic-gate /*
89*f8bbc571SPavel Filipensky  * The value is put in p_hash to identify marker pages. It is safe to
90*f8bbc571SPavel Filipensky  * test p_hash ==(!=) PVN_VPLIST_HASH_TAG even without holding p_selock.
91*f8bbc571SPavel Filipensky  */
92*f8bbc571SPavel Filipensky #define	PVN_VPLIST_HASH_TAG	((page_t *)-1)
93*f8bbc571SPavel Filipensky 
947c478bd9Sstevel@tonic-gate #endif	/* _KERNEL */
957c478bd9Sstevel@tonic-gate 
967c478bd9Sstevel@tonic-gate #ifdef	__cplusplus
977c478bd9Sstevel@tonic-gate }
987c478bd9Sstevel@tonic-gate #endif
997c478bd9Sstevel@tonic-gate 
1007c478bd9Sstevel@tonic-gate #endif	/* _VM_PVN_H */
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