On Tue, Aug 03, 2010 at 12:58:21PM +0200, Bo Brantén wrote:
>
> I have a question on the implementation of persistent preallocation,
> the reason to not return the disk block is because it can contain
> old data but I wonder if an implementation has to return zeros
> instead or if it could return any garbage as long as it is not
> _that_ garbage?
What would be the point? If we know that we can't return the on-disk
block contents, returning all zero's is much nicer for the application
since it also then looks like and works just like a sparse file.
- Ted
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