linux-ext4 - Re: [PATCH 4/4] ext4: Wait for proper transaction commit on fsync

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Message-ID: <20091116004641.GM4323@mit.edu>
Date:	Sun, 15 Nov 2009 19:46:41 -0500
From:	Theodore Tso <tytso@....edu>
To:	Jan Kara <jack@...e.cz>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: [PATCH 4/4] ext4: Wait for proper transaction commit on fsync

On Tue, Oct 27, 2009 at 01:48:49PM +0100, Jan Kara wrote:
> +	/*
> +	 * Transactions that contain inode's metadata needed to complete
> +	 * fsync and fdatasync, respectively.
> +	 */
> +	atomic_t i_sync_tid;
> +	atomic_t i_datasync_tid;

Why do we need an atomic_t here at all?  It's not clear it's
necessary.  What specific race are you worried about?

	    	 	       	       - Ted
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