1.\" Copyright (c) 1996 Doug Rabson 2.\" 3.\" All rights reserved. 4.\" 5.\" This program is free software. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR 17.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, 20.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26.\" 27.\" $FreeBSD: src/share/man/man9/vput.9,v 1.6.2.3 2001/12/17 11:30:19 ru Exp $ 28.\" $DragonFly: src/share/man/man9/vput.9,v 1.7 2007/05/11 08:25:24 swildner Exp $ 29.\" 30.Dd May 5, 2007 31.Os 32.Dt VPUT 9 33.Sh NAME 34.Nm vput 35.Nd "Decrement the primary reference count for a vnode and unlock it" 36.Sh SYNOPSIS 37.In sys/param.h 38.In sys/vnode.h 39.Ft void 40.Fn vput "struct vnode *vp" 41.Sh DESCRIPTION 42Decrement the vnode's primary reference count (via the 43.Fa v_sysref 44field) and unlock the vnode. 45.Bl -tag -width ".Fa vp" 46.It Fa vp 47The vnode in question. 48.El 49.Pp 50This operation is functionally equivalent to calling 51.Xr vn_unlock 9 52followed by 53.Xr vrele 9 . 54Releasing the last primary reference on a vnode will cause it to be 55deactivated and either moved to the free list or cached. 56Vnodes with namecache and/or VM objects are typically marked as being cached 57unless the system needs the memory for other purposes. 58.Sh SEE ALSO 59.Xr vdrop 9 , 60.Xr vget 9 , 61.Xr vhold 9 , 62.Xr vnode 9 , 63.Xr vn_lock 9 , 64.Xr vn_unlock 9 , 65.Xr vref 9 , 66.Xr vrele 9 67.Sh AUTHORS 68This manual page was written by 69.An Doug Rabson . 70