fs/ext3/super.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletion(-)

--- linux-2.4.20/fs/ext3/super.c~ext3-unmount_sync	2003-04-08 23:35:44.000000000 -0600
+++ linux-2.4.20-braam/fs/ext3/super.c	2003-04-08 23:35:44.000000000 -0600
@@ -1612,7 +1612,12 @@ void ext3_write_super (struct super_bloc
 	sb->s_dirt = 0;
 	target = log_start_commit(EXT3_SB(sb)->s_journal, NULL);
 
-	if (do_sync_supers) {
+	/*
+	 * Tricky --- if we are unmounting, the write really does need
+	 * to be synchronous.  We can detect that by looking for NULL in
+	 * sb->s_root.
+	 */
+	if (do_sync_supers || !sb->s_root) {
 		unlock_super(sb);
 		log_wait_commit(EXT3_SB(sb)->s_journal, target);
 		lock_super(sb);

_