Make ext2 safer against accidental data loss during removal
by adding support for waiting for super block update on sync.
Don't know why this wasn't done originally, all the other file
systems have it.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>

--- a/fs/ext2/super.c	2009-11-17 09:14:12.177002522 -0800
+++ b/fs/ext2/super.c	2009-11-17 09:14:32.698005421 -0800
@@ -1147,6 +1147,8 @@ static int ext2_sync_fs(struct super_blo
 		ext2_sync_super(sb, es);
 	} else {
 		ext2_commit_super(sb, es);
+		if (wait)
+			sync_dirty_buffer(EXT2_SB(sb)->s_sbh);
 	}
 	sb->s_dirt = 0;
 	unlock_kernel();

-- 

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