From c8c59a31e247d512b3a0d1eea9196fcd1a90b37a Mon Sep 17 00:00:00 2001
From: tegge <tegge@FreeBSD.org>
Date: Sun, 19 Mar 2006 21:09:19 +0000
Subject: [PATCH] Reduce probability of unmount failing after having unmounted
 snapshots.

---
 sys/ufs/ffs/ffs_vfsops.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sys/ufs/ffs/ffs_vfsops.c b/sys/ufs/ffs/ffs_vfsops.c
index 6ad9bc74cf2f..2cc50181319e 100644
--- a/sys/ufs/ffs/ffs_vfsops.c
+++ b/sys/ufs/ffs/ffs_vfsops.c
@@ -1044,6 +1044,7 @@ ffs_flushfiles(mp, flags, td)
 		if ((error = vflush(mp, 0, SKIPSYSTEM | flags, td)) != 0)
 			return (error);
 		ffs_snapshot_unmount(mp);
+		flags |= FORCECLOSE;
 		/*
 		 * Here we fall through to vflush again to ensure
 		 * that we have gotten rid of all the system vnodes.