1997-03-03 18:01:01 +00:00
|
|
|
.\" -*- 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.
|
|
|
|
|
.\"
|
1997-04-13 14:39:59 +00:00
|
|
|
.\" $Id: VOP_INACTIVE.9,v 1.1 1997/03/03 18:00:20 dfr Exp $
|
1997-03-03 18:01:01 +00:00
|
|
|
.\"
|
|
|
|
|
.Dd July 24, 1996
|
|
|
|
|
.Os
|
|
|
|
|
.Dt VOP_INACTIVE 9
|
|
|
|
|
.Sh NAME
|
|
|
|
|
.Nm VOP_INACTIVE ,
|
|
|
|
|
.Nm VOP_RECLAIM
|
|
|
|
|
.Nd reclaim filesystem resources for a vnode
|
|
|
|
|
.Sh SYNOPSIS
|
1997-04-13 14:39:59 +00:00
|
|
|
.Fd #include <sys/param.h>
|
1997-03-03 18:01:01 +00:00
|
|
|
.Fd #include <sys/vnode.h>
|
|
|
|
|
.Ft int
|
1997-04-13 14:39:59 +00:00
|
|
|
.Fn VOP_INACTIVE "struct vnode *vp" "struct proc *p"
|
1997-03-03 18:01:01 +00:00
|
|
|
.Ft int
|
1997-04-13 14:39:59 +00:00
|
|
|
.Fn VOP_RECLAIM "struct vnode *vp" "struct proc *p"
|
1997-03-03 18:01:01 +00:00
|
|
|
.Sh DESCRIPTION
|
|
|
|
|
.Pp
|
|
|
|
|
The arguments are:
|
|
|
|
|
.Bl -tag -width vp
|
|
|
|
|
.It Ar vp
|
|
|
|
|
the vnode being reclaimed
|
|
|
|
|
.El
|
|
|
|
|
.Pp
|
|
|
|
|
.Xr VOP_INACTIVE 9
|
|
|
|
|
is called when the kernel is no longer using the vnode. This may be
|
|
|
|
|
because the reference count reaches zero or it may be that the
|
|
|
|
|
filesystem is being forcibly unmounted while there are open files.
|
|
|
|
|
It can be used to reclaim space for 'open but deleted' files.
|
|
|
|
|
.Xr VOP_RECLAIM 9
|
|
|
|
|
is called when a vnode is being reused for a different filesystem.
|
|
|
|
|
Any filesystem specific resources associated with the vnode should be
|
|
|
|
|
freed.
|
|
|
|
|
.Sh PSEUDOCODE
|
|
|
|
|
.Bd -literal
|
|
|
|
|
int
|
|
|
|
|
vop_inactive(struct vnode *vp)
|
|
|
|
|
{
|
|
|
|
|
if (link count of vp == 0) {
|
|
|
|
|
/*
|
|
|
|
|
* Reclaim space in filesystem for vp.
|
|
|
|
|
*/
|
|
|
|
|
...;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int
|
|
|
|
|
vop_reclaim(struct vnode *vp)
|
|
|
|
|
{
|
|
|
|
|
/*
|
|
|
|
|
* Clean out the name cache.
|
|
|
|
|
*/
|
|
|
|
|
cache_purge(vp);
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Free filesystem-related data.
|
|
|
|
|
*/
|
|
|
|
|
...;
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
.Ed
|
|
|
|
|
.Sh SEE ALSO
|
|
|
|
|
.Xr vnode 9
|
|
|
|
|
.Sh AUTHORS
|
|
|
|
|
This man page was written by Doug Rabson.
|
