From patchwork Tue Nov 17 17:46:19 2009
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Subject: [2/2] ext2: add wait flag support to sync_fs
Date: Tue, 17 Nov 2009 07:46:19 -0000
From: stephen hemminger <shemminger@vyatta.com>
X-Patchwork-Id: 38667
Message-Id: <20091117174647.402219318@vyatta.com>
To: linux-ext4@vger.kernel.org

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();