VOP_INACTIVE(9) BSD Kernel Developer's Manual VOP_INACTIVE(9)NAME
VOP_INACTIVE, VOP_RECLAIM — reclaim filesystem resources for a vnode
SYNOPSIS
#include <sys/param.h>
#include <sys/vnode.h>
int
VOP_INACTIVE(struct vnode *vp, struct proc *p);
int
VOP_RECLAIM(struct vnode *vp, struct proc *p);
DESCRIPTION
The arguments are:
vp the vnode being reclaimed
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.
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.
LOCKS
For VOP_INACTIVE, the vp will be locked on entry. Your VOP_INACTIVE code
must unlock the vp prior to returning.
For VOP_RECLAIM, the vp will not be locked on entry and should be left
unlocked on return.
PSEUDOCODE
int
vop_inactive(struct vnode *vp)
{
if (link count of vp == 0) {
/*
* Reclaim space in filesystem for vp.
*/
...;
}
VOP_UNLOCK(vp, 0, p);
return 0;
}
int
vop_reclaim(struct vnode *vp)
{
/*
* Clean out the name cache.
*/
cache_purge(vp);
/*
* Free filesystem-related data.
*/
...;
return 0;
}
SEE ALSOvnode(9)AUTHORS
This man page was written by Doug Rabson.
BSD July 24, 1996 BSD
