freebsd-dev/share/man/man9/VOP_INACTIVE.9
Bruce Evans b18e517615 Updated synopsis for Lite2.
Fixed missing #include in synopsis.
1997-04-13 14:39:59 +00:00

97 lines
2.7 KiB
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.\" -*- nroff -*-
.\"
.\" Copyright (c) 1996 Doug Rabson
.\"
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.\" $Id: VOP_INACTIVE.9,v 1.1 1997/03/03 18:00:20 dfr Exp $
.\"
.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
.Fd #include <sys/param.h>
.Fd #include <sys/vnode.h>
.Ft int
.Fn VOP_INACTIVE "struct vnode *vp" "struct proc *p"
.Ft int
.Fn VOP_RECLAIM "struct vnode *vp" "struct proc *p"
.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.