linux-ext4 - Re: [PATCH 2/2] ext4: Fix waiting and sending of a barrier in ext4_sync

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Message-ID: <20110522211239.GB10009@thunk.org>
Date:	Sun, 22 May 2011 17:12:39 -0400
From:	Ted Ts'o <tytso@....edu>
To:	Jan Kara <jack@...e.cz>
Cc:	Edward Goggin <egoggin@...are.com>, linux-ext4@...r.kernel.org
Subject: Re: [PATCH 2/2] ext4: Fix waiting and sending of a barrier in
 ext4_sync_file()

On Tue, May 17, 2011 at 12:28:15PM +0200, Jan Kara wrote:
> This code change will cause ext4_sync_file() to unnecessarily issue
> a barrier in data=ordered and data=journal mode with external
> journal but solving this would require ext4 to mess with jbd2
> internals since jbd2 does not know about ext4 data journalling
> modes.

I really don't like this.  I think the following two patches should
address this.  Could you take a look please?

-- Ted
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