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+.\"     $OpenBSD: vrecycle.9,v 1.11 2020/08/05 11:10:24 tim Exp $
+.\"-
+.\" Copyright (c) 2002 Peter Werner
+.\" All rights reserved.
+.\"
+.\" 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 AUTHOR AND CONTRIBUTORS ``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 AUTHOR OR CONTRIBUTORS 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.
+.\"
+.\"
+.Dd $Mdocdate: August 5 2020 $
+.Dt VRECYCLE 9
+.Os
+.Sh NAME
+.Nm vrecycle
+.Nd recycle a vnode if its reference count is zero
+.Sh SYNOPSIS
+.In sys/param.h
+.In sys/vnode.h
+.Ft int
+.Fo vrecycle
+.Fa "struct vnode *vp"
+.Fa "struct proc *p"
+.Fc
+.Sh DESCRIPTION
+The
+.Fn vrecycle
+function places the vnode
+.Fa vp
+on the free list using
+.Xr vgonel 9
+if its
+.Va v_usecount
+field is zero.
+If
+.Va v_usecount
+is non-zero, it simply returns.
+The
+.Fa p
+argument specifies the process responsible for the call.
+.Sh RETURN VALUES
+.Fn vrecycle
+will return 1 if the vnode was placed on the free list.
+It will return 0 if the reference count was non-zero.
+.Sh SEE ALSO
+.Xr vgonel 9 ,
+.Xr vnode 9
+.Sh HISTORY
+This man page was originally written for
+.Ox .