From ba5eb429e365ee92211b032be946ff8e63ad72ab Mon Sep 17 00:00:00 2001
From: Jeff Roberson <jeff@FreeBSD.org>
Date: Fri, 31 Mar 2006 23:38:15 +0000
Subject: [PATCH]  - When there are dangling vnodes at unmount print them
 before we panic.

Sponsored by:	Isilon Systems, Inc.
---
 sys/kern/vfs_mount.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/sys/kern/vfs_mount.c b/sys/kern/vfs_mount.c
index 117df18617c..688ce8f226f 100644
--- a/sys/kern/vfs_mount.c
+++ b/sys/kern/vfs_mount.c
@@ -533,8 +533,13 @@ vfs_mount_destroy(struct mount *mp, struct thread *td)
 	}
 	MNT_IUNLOCK(mp);
 	mp->mnt_vfc->vfc_refcount--;
-	if (!TAILQ_EMPTY(&mp->mnt_nvnodelist))
+	if (!TAILQ_EMPTY(&mp->mnt_nvnodelist)) {
+		struct vnode *vp;
+
+		TAILQ_FOREACH(vp, &mp->mnt_nvnodelist, v_nmntvnodes)
+			vprint("", vp);
 		panic("unmount: dangling vnode");
+	}
 	MNT_ILOCK(mp);
 	if (mp->mnt_kern_flag & MNTK_MWAIT)
 		wakeup(mp);