NetBSD/sys/miscfs/syncfs/syncfs.h

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2003-01-07 00:02:18 +03:00
/* $NetBSD: syncfs.h,v 1.6 2003/01/06 21:06:47 matt Exp $ */
/*
* Copyright 1997 Marshall Kirk McKusick. All Rights Reserved.
*
* This code is derived from work done by Greg Ganger at the
* University of Michigan.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. None of the names of McKusick, Ganger, or the University of Michigan
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY MARSHALL KIRK MCKUSICK ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL MARSHALL KIRK MCKUSICK BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
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#ifndef _MISCFS_SYNCFS_SYNCFS_H_
#define _MISCFS_SYNCFS_SYNCFS_H_
/*
* Routines to create and manage a filesystem syncer vnode.
*/
#define sync_close genfs_nullop
int sync_fsync __P((void *));
int sync_inactive __P((void *));
int sync_reclaim __P((void *));
#define sync_lock genfs_nolock
#define sync_unlock genfs_nounlock
int sync_print __P((void *));
#define sync_islocked genfs_noislocked
#define sync_putpages genfs_null_putpages
void sched_sync __P((void *));
void vn_initialize_syncerd __P((void));
int vfs_allocate_syncvnode __P((struct mount *));
void vfs_deallocate_syncvnode __P((struct mount *));
extern int (**sync_vnodeop_p) __P((void *));
#define SYNCER_MAXDELAY 32
extern int syncer_maxdelay; /* maximum delay time */
extern struct lock syncer_lock; /* lock to freeze syncer during unmount */
LIST_HEAD(synclist, vnode);
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#endif /* _MISCFS_SYNCFS_SYNCFS_H_ */