diff options
| author | Jason McIntyre <jmc@cvs.openbsd.org> | 2012-09-17 05:50:54 +0000 |
|---|---|---|
| committer | Jason McIntyre <jmc@cvs.openbsd.org> | 2012-09-17 05:50:54 +0000 |
| commit | 3ed61e53655701e1dbf388c25b9a17f606f59f3c (patch) | |
| tree | 44cf5bacc5c6510a6b87f266201b11ddc9bc0239 /share | |
| parent | 6c96dc2aebd3752ef45888ef79b75bab6b6277aa (diff) | |
document vdrop; original diff from Michal Mazurek
text rewrite/ok guenther
Diffstat (limited to 'share')
| -rw-r--r-- | share/man/man9/Makefile | 3 | ||||
| -rw-r--r-- | share/man/man9/vhold.9 | 23 |
2 files changed, 21 insertions, 5 deletions
diff --git a/share/man/man9/Makefile b/share/man/man9/Makefile index 42791642836..12f6dc30932 100644 --- a/share/man/man9/Makefile +++ b/share/man/man9/Makefile @@ -1,4 +1,4 @@ -# $OpenBSD: Makefile,v 1.171 2012/06/21 18:02:21 matthew Exp $ +# $OpenBSD: Makefile,v 1.172 2012/09/17 05:50:53 jmc Exp $ # $NetBSD: Makefile,v 1.4 1996/01/09 03:23:01 thorpej Exp $ # Makefile for section 9 (kernel function and variable) manual pages. @@ -373,5 +373,6 @@ MLINKS+=VOP_LOOKUP.9 VOP_ABORTOP.9 VOP_LOOKUP.9 VOP_ACCESS.9 \ MLINKS+=workq_add_task.9 workq_create.9 \ workq_add_task.9 workq_queue_task.9 \ workq_add_task.9 workq_destroy.9 +MLINKS+=vhold.9 vdrop.9 .include <bsd.prog.mk> diff --git a/share/man/man9/vhold.9 b/share/man/man9/vhold.9 index b9a23b4434e..7ce9f2d5c00 100644 --- a/share/man/man9/vhold.9 +++ b/share/man/man9/vhold.9 @@ -1,4 +1,4 @@ -.\" $OpenBSD: vhold.9,v 1.6 2009/12/15 07:34:58 jmc Exp $ +.\" $OpenBSD: vhold.9,v 1.7 2012/09/17 05:50:53 jmc Exp $ .\" .\" Copyright (C) 2001 Chad David <davidc@acns.ab.ca>. All rights reserved. .\" @@ -27,17 +27,20 @@ .\" .\" $FreeBSD: src/share/man/man9/vhold.9,v 1.2 2001/12/14 09:11:13 ru Exp $ .\" -.Dd $Mdocdate: December 15 2009 $ +.Dd $Mdocdate: September 17 2012 $ .Dt VHOLD 9 .Os .Sh NAME -.Nm vhold -.Nd acquire a hold on a vnode +.Nm vhold , +.Nm vdrop +.Nd acquire/release a hold on a vnode .Sh SYNOPSIS .Fd #include <sys/param.h> .Fd #include <sys/vnode.h> .Ft void .Fn vhold "struct vnode *vp" +.Ft void +.Fn vdrop "struct vnode *vp" .Sh DESCRIPTION The .Fn vhold @@ -50,6 +53,18 @@ and .Va v_usecount are both zero, it will be removed from the free list and added to the vnode hold list. +.Pp +The +.Fn vdrop +function decrements the +.Va v_holdcnt +of the given vnode. +If the vnode is on the vnode hold list and its +.Va v_holdcnt +and +.Va v_usecount +are both zero, it will be removed from the vnode hold list and +added to the freed list. .Sh SEE ALSO .Xr vnode 9 .Sh AUTHORS |