linux-ext4 - Re: [PATCH] ext4: fix cache flish in ext4_sync

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Message-ID: <20090906014316.GE2287@mit.edu>
Date:	Sat, 5 Sep 2009 21:43:16 -0400
From:	Theodore Tso <tytso@....edu>
To:	Eric Sandeen <sandeen@...hat.com>
Cc:	Christoph Hellwig <hch@....de>, linux-ext4@...r.kernel.org
Subject: Re: [PATCH] ext4: fix cache flish in ext4_sync_file

On Tue, Sep 01, 2009 at 01:23:27PM -0500, Eric Sandeen wrote:
> Christoph Hellwig wrote:
> > We need to flush the write cache unconditionally in ->fsync, otherwise
> > writes into already allocated blocks can get lost.  Writes into fully
> > allocated files are very common when using disk images for
> > virtualization, and without this fix can easily lose data after
> > an fdatasync, which is the typical implementation for a cache flush on
> > the virtual drive.
> > 
> > 
> > Signed-off-by: Christoph Hellwig <hch@....de>
> 
> Fixing my old commit, I guess ;)

Added to the ext4 patch queue (with the "flish" corrected to "flush")

      	     	  	      	    - Ted
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