freebsd-skq/share/man/man9/vrele.9

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.\" -*- nroff -*-
.\"
.\" Copyright (c) 1996 Doug Rabson
.\"
.\" All rights reserved.
.\"
.\" This program is free software.
.\"
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.\" 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
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.\" $FreeBSD$
.\"
.Dd July 24, 1996
.Os
1997-03-22 22:47:34 +00:00
.Dt VRELE 9
.Sh NAME
.Nm vrele
.Nd decrement the use count for a vnode
.Sh SYNOPSIS
.In sys/param.h
.In sys/vnode.h
.Ft void
.Fn vrele "struct vnode *vp"
.Sh DESCRIPTION
Decrement the
.Va v_usecount
field of a vnode.
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.Bl -tag -width 2n
.It Fa vp
the vnode to decrement
.El
.Pp
Any code in the system which is using a vnode should call
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.Fn vrele
when it is finished with the vnode.
If the
.Va v_usecount
field of the vnode reaches zero, then it will be placed on the free list.
.Sh SEE ALSO
.Xr vget 9 ,
.Xr vnode 9 ,
.Xr vput 9 ,
.Xr vref 9
.Sh AUTHORS
This man page was written by
.An Doug Rabson .