Re: [PATCH] xfsqa: make hole tests independent of speculative allocation patterns

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On Tue, Dec 21, 2010 at 08:02:00PM +1100, Dave Chinner wrote:
> From: Dave Chinner <dchinner@xxxxxxxxxx>
> 
> Many of the "count-the-holes" tests (008, 012, etc) do writes that extend the
> file and hence allocation patterns are dependent on speculative allocation
> beyond EOF behaviour. Hence if we change that behaviour, these tests all fail
> because there is a different pattern of holes.
> 
> Make the tests independent of EOF preallocation behaviour by first truncating
> the file to the size the test is defined to use. This prevents speculative
> prealocation from occurring, and hence changes in such behaviour will not cause
> the tests to fail.
> 
> Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>

Looks good and fixes the test failure I saw with the dirty release
counter patch.

Reviewed-by: Christoph Hellwig <hch@xxxxxx>

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