On Tue, Jun 16, 2009 at 04:42:17PM +0200, Jan Kara wrote:

  Good point, I should have mentioned in the changelog: fsx-linux is able
to trigger the problem quite quickly.
  I have also written a simple program for initial testing of the fix
(works only for 1K blocksize and 4K pagesize) - it's attached.

I haven't been able to trigger anything with it on either xfs or ext4.

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