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null_vnops.c (30434) null_vnops.c (30636)
1/*
2 * Copyright (c) 1992, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * John Heidemann of the UCLA Ficus project.
7 *
8 * Redistribution and use in source and binary forms, with or without

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32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * @(#)null_vnops.c 8.6 (Berkeley) 5/27/95
37 *
38 * Ancestors:
39 * @(#)lofs_vnops.c 1.2 (Berkeley) 6/18/92
1/*
2 * Copyright (c) 1992, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * John Heidemann of the UCLA Ficus project.
7 *
8 * Redistribution and use in source and binary forms, with or without

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32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * @(#)null_vnops.c 8.6 (Berkeley) 5/27/95
37 *
38 * Ancestors:
39 * @(#)lofs_vnops.c 1.2 (Berkeley) 6/18/92
40 * $Id: null_vnops.c,v 1.23 1997/10/15 09:21:07 phk Exp $
40 * $Id: null_vnops.c,v 1.24 1997/10/15 10:04:31 phk Exp $
41 * ...and...
42 * @(#)null_vnodeops.c 1.20 92/07/07 UCLA Ficus project
43 *
41 * ...and...
42 * @(#)null_vnodeops.c 1.20 92/07/07 UCLA Ficus project
43 *
44 * $Id: null_vnops.c,v 1.23 1997/10/15 09:21:07 phk Exp $
44 * $Id: null_vnops.c,v 1.24 1997/10/15 10:04:31 phk Exp $
45 */
46
47/*
48 * Null Layer
49 *
50 * (See mount_null(8) for more information.)
51 *
52 * The null layer duplicates a portion of the file system

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528
529static int
530null_inactive(ap)
531 struct vop_inactive_args /* {
532 struct vnode *a_vp;
533 struct proc *a_p;
534 } */ *ap;
535{
45 */
46
47/*
48 * Null Layer
49 *
50 * (See mount_null(8) for more information.)
51 *
52 * The null layer duplicates a portion of the file system

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528
529static int
530null_inactive(ap)
531 struct vop_inactive_args /* {
532 struct vnode *a_vp;
533 struct proc *a_p;
534 } */ *ap;
535{
536 struct vnode *vp = ap->a_vp;
537 struct null_node *xp = VTONULL(vp);
538 struct vnode *lowervp = xp->null_lowervp;
536 /*
537 * Do nothing (and _don't_ bypass).
538 * Wait to vrele lowervp until reclaim,
539 * so that until then our null_node is in the
540 * cache and reusable.
539 /*
540 * Do nothing (and _don't_ bypass).
541 * Wait to vrele lowervp until reclaim,
542 * so that until then our null_node is in the
543 * cache and reusable.
544 * We still have to tell the lower layer the vnode
545 * is now inactive though.
541 *
542 * NEEDSWORK: Someday, consider inactive'ing
543 * the lowervp and then trying to reactivate it
544 * with capabilities (v_id)
545 * like they do in the name lookup cache code.
546 * That's too much work for now.
547 */
546 *
547 * NEEDSWORK: Someday, consider inactive'ing
548 * the lowervp and then trying to reactivate it
549 * with capabilities (v_id)
550 * like they do in the name lookup cache code.
551 * That's too much work for now.
552 */
553 VOP_INACTIVE(lowervp, ap->a_p);
548 VOP_UNLOCK(ap->a_vp, 0, ap->a_p);
549 return (0);
550}
551
552static int
553null_reclaim(ap)
554 struct vop_reclaim_args /* {
555 struct vnode *a_vp;

--- 104 unchanged lines hidden --- 		554 VOP_UNLOCK(ap->a_vp, 0, ap->a_p);
555 return (0);
556}
557
558static int
559null_reclaim(ap)
560 struct vop_reclaim_args /* {
561 struct vnode *a_vp;

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