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authordfr <dfr@FreeBSD.org>1997-03-03 18:01:01 +0000
committerdfr <dfr@FreeBSD.org>1997-03-03 18:01:01 +0000
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This is the current draft of my filesystem manpages. Some files are
incomplete and some are just placeholders but I wanted to try to get something at least into 2.2 on the grounds that what I have is a lot better than nothing. I also wanted to commit something which documents the interfaces in 2.2 before I start updating the documentation for 3.0. This is a definite 2.2 candidate and is also relavent to 2.1 if people still care about that branch.
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+.\" -*- nroff -*-
+.\"
+.\" Copyright (c) 1996 Doug Rabson
+.\"
+.\" All rights reserved.
+.\"
+.\" This program is free software.
+.\"
+.\" 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.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``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 THE DEVELOPERS 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.
+.\"
+.\" $Id$
+.\"
+.Dd July 24, 1996
+.Os
+.Dt vrele 9
+.Sh NAME
+.Nm vrele
+.Nd decrement the use count for a vnode
+.Sh SYNOPSIS
+.Fd #include <sys/vnode.h>
+.Ft int
+.Fn vrele "struct vnode *vp"
+.Sh DESCRIPTION
+Decrement the
+.Dv v_usecount
+field of a vnode.
+.Bl -tag -width vp
+.It Ar vp
+the vnode to decrement
+.El
+.Pp
+Any code in the system which is using a vnode should call
+.Xr vrele 9
+when it is finished with the vnode.
+If the
+.Dv v_usecount
+field of the vnode reaches zero, then it will be placed on the free list.
+.Sh SEE ALSO
+.Xr vnode 9 ,
+.Xr vget 9 ,
+.Xr vput 9 ,
+.Xr vref 9
+.Sh AUTHORS
+This man page was written by Doug Rabson.
+
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