1.\" -*- nroff -*- 2.\" 3.\" Copyright (c) 1996 Doug Rabson 4.\" 5.\" All rights reserved. 6.\" 7.\" This program is free software. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR 19.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, 22.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28.\" 29.\" $FreeBSD: src/share/man/man9/VFS_SYNC.9,v 1.6.2.1 2001/12/17 11:30:18 ru Exp $ 30.\" $DragonFly: src/share/man/man9/VFS_SYNC.9,v 1.2 2003/06/17 04:37:01 dillon Exp $ 31.\" 32.Dd July 24, 1996 33.Os 34.Dt VFS_SYNC 9 35.Sh NAME 36.Nm VFS_SYNC 37.Nd flush unwritten data 38.Sh SYNOPSIS 39.In sys/param.h 40.In sys/mount.h 41.In sys/vnode.h 42.Ft int 43.Fn VFS_SYNC "struct mount *mp" "int waitfor" "struct ucred *cred" "struct proc *p" 44.Sh DESCRIPTION 45This writes out all unwritten data in a filesystem. 46.Pp 47Its arguments are: 48.Bl -tag -width waitfor 49.It Ar mp 50The filesystem. 51.It Ar waitfor 52Whether the function should wait for I/O to complete. 53.It Ar cred 54The caller's credentials. 55.It Ar p 56The calling process. 57.El 58.Pp 59This would normally call 60.Xr VOP_FSYNC 9 61for all the vnodes in the filesystem. 62.Sh SEE ALSO 63.Xr fsync 2 , 64.Xr sync 2 , 65.Xr VFS 9 , 66.Xr vnode 9 , 67.Xr VOP_FSYNC 9 68.Sh AUTHORS 69This man page was written by 70.An Doug Rabson . 71