Index: head/sys/fs/msdosfs/msdosfs_denode.c
===================================================================
--- head/sys/fs/msdosfs/msdosfs_denode.c
+++ head/sys/fs/msdosfs/msdosfs_denode.c
@@ -79,7 +79,7 @@
 
 	a = arg;
 	de = VTODE(vp);
-	return (de->de_inode != *a);
+	return (de->de_inode != *a) || (de->de_refcnt <= 0);
 }
 
 /*
@@ -124,8 +124,9 @@
 	 * address of "." entry. For root dir (if not FAT32) use cluster
 	 * MSDOSFSROOT, offset MSDOSFSROOT_OFS
 	 *
-	 * NOTE: The check for de_refcnt > 0 below insures the denode being
-	 * examined does not represent an unlinked but still open file.
+	 * NOTE: de_vncmpf will explicitly skip any denodes that do not have
+	 * a de_refcnt > 0.  This insures that that we do not attempt to use
+	 * a denode that represents an unlinked but still open file.
 	 * These files are not to be accessible even when the directory
 	 * entry that represented the file happens to be reused while the
 	 * deleted file is still open.