[PATCH] xfstests: add another fallocate test to 214

[Christoph Hellwig]

On Mon, Jan 04, 2010 at 05:18:09PM -0600, Eric Sandeen wrote:
> ext4 had a regression where it double-accounted used blocks
> if you fallocated on top of delalloc blocks.  Ted sent a
> c program to exploit it (see "fsstress-induced corruption reproduced"
> on linux-ext4 on 12/31/2009) and it's trivial to do the same thing
> within the xfstests framework using xfs_io.
> 
> This also changes the handcrafted xfs_io tests to use the
> _require_xfs_io_falloc helper, not sure how that got missed.

Looks good,


Reviewed-by: Christoph Hellwig <hch at lst.de>