diff --git a/share/man/man9/vnode.9 b/share/man/man9/vnode.9
index a08318536e05..2e895f64967e 100644
--- a/share/man/man9/vnode.9
+++ b/share/man/man9/vnode.9
@@ -1,4 +1,4 @@
-.\"     $NetBSD: vnode.9,v 1.44 2010/01/08 13:15:46 pooka Exp $
+.\"     $NetBSD: vnode.9,v 1.45 2010/02/11 23:16:35 haad Exp $
 .\"
 .\" Copyright (c) 2001, 2005, 2006 The NetBSD Foundation, Inc.
 .\" All rights reserved.
@@ -34,6 +34,7 @@
 .Nm vnode ,
 .Nm vref ,
 .Nm vrele ,
+.Nm vrele_async ,
 .Nm vget ,
 .Nm vput ,
 .Nm vhold ,
@@ -62,6 +63,8 @@
 .Fn vref "struct vnode *vp"
 .Ft void
 .Fn vrele "struct vnode *vp"
+.Ft void
+.Fn vrele_async "struct vnode *vp"
 .Ft int
 .Fn vget "struct vnode *vp" "int lockflag"
 .Ft void
@@ -246,6 +249,7 @@ kernel to the vnode.
 This count is maintained by
 .Fn vref ,
 .Fn vrele ,
+.Fn vrele_async ,
 and
 .Fn vput .
 The second is the number of active references within the kernel to the
@@ -531,6 +535,8 @@ and
 .Em v_holdcnt
 are zero, the vnode is placed on the freelist.
 .It Fn vget "vp" "lockflags"
+.It Fn vrele_async "vp"
+Will asychronously release vnode in different context than caller, sometime in future. 
 Reclaim vnode
 .Fa vp
 from the freelist, increment its reference count and lock it.
diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c
index 8b16dade5809..0cb7db2191e3 100644
--- a/sys/kern/vfs_subr.c
+++ b/sys/kern/vfs_subr.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: vfs_subr.c,v 1.397 2010/01/15 19:28:26 bouyer Exp $	*/
+/*	$NetBSD: vfs_subr.c,v 1.398 2010/02/11 23:16:35 haad Exp $	*/
 
 /*-
  * Copyright (c) 1997, 1998, 2004, 2005, 2007, 2008 The NetBSD Foundation, Inc.
@@ -91,7 +91,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: vfs_subr.c,v 1.397 2010/01/15 19:28:26 bouyer Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vfs_subr.c,v 1.398 2010/02/11 23:16:35 haad Exp $");
 
 #include "opt_ddb.h"
 #include "opt_compat_netbsd.h"
@@ -1424,8 +1424,12 @@ vrelel(vnode_t *vp, int flags)
 		/*
 		 * XXX This ugly block can be largely eliminated if
 		 * locking is pushed down into the file systems.
+		 *
+		 * Defer vnode release to vrele_thread if caller
+		 * requests it explicitly.
 		 */
-		if (curlwp == uvm.pagedaemon_lwp) {
+		if ((curlwp == uvm.pagedaemon_lwp) ||
+		    (flags & VRELEL_ASYNC_RELE) != 0) {
 			/* The pagedaemon can't wait around; defer. */
 			defer = true;
 		} else if (curlwp == vrele_lwp) {
@@ -1599,6 +1603,23 @@ vrele(vnode_t *vp)
 	vrelel(vp, 0);
 }
 
+/*
+ * Asynchronous vnode release, vnode is released in different context.
+ */
+void
+vrele_async(vnode_t *vp)
+{
+
+	KASSERT((vp->v_iflag & VI_MARKER) == 0);
+
+	if ((vp->v_iflag & VI_INACTNOW) == 0 && vtryrele(vp)) {
+		return;
+	}
+	
+	mutex_enter(&vp->v_interlock);
+	vrelel(vp, VRELEL_ASYNC_RELE);
+}
+
 static void
 vrele_thread(void *cookie)
 {
diff --git a/sys/sys/vnode.h b/sys/sys/vnode.h
index d33caeed3c90..a8e04f8ca01f 100644
--- a/sys/sys/vnode.h
+++ b/sys/sys/vnode.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: vnode.h,v 1.213 2010/01/27 15:34:08 uebayasi Exp $	*/
+/*	$NetBSD: vnode.h,v 1.214 2010/02/11 23:16:35 haad Exp $	*/
 
 /*-
  * Copyright (c) 2008 The NetBSD Foundation, Inc.
@@ -601,6 +601,7 @@ void	vprint(const char *, struct vnode *);
 void 	vput(struct vnode *);
 int	vrecycle(struct vnode *, kmutex_t *, struct lwp *);
 void 	vrele(struct vnode *);
+void 	vrele_async(struct vnode *);
 int	vtruncbuf(struct vnode *, daddr_t, bool, int);
 void	vwakeup(struct buf *);
 void	vwait(struct vnode *, int);
@@ -609,6 +610,7 @@ void	vrevoke(struct vnode *);
 void	vrelel(struct vnode *, int);
 #define VRELEL_NOINACTIVE	0x01
 #define VRELEL_ONHEAD 		0x02
+#define VRELEL_ASYNC_RELE	0x03
 struct vnode *
 	vnalloc(struct mount *);
 void	vnfree(struct vnode *);