[PATCH 1/2] zhashfs, detect fill pattern and suppress blocks in output

[Daniel Drake]

On 26 April 2011 23:13, John Gilmore <gnu at toad.com> wrote:
>> I think all of those are safe assumptions to make, and that FIEMAP is
>> the more correct and efficient way of doing this.
>
> Here's a reason not to: FIEMAP doesn't actually work yet (or, alternatively,
> since its behavior is undocumented, you can't depend on its behavior):

It looks like a lot of those issues are resolved with the latest
discussions and churn in the kernel community, but perhaps it is a
good idea to avoid FIEMAP for now while everything settles. I still
think its the right approach but perhaps better saved for a future
release cycle.

James, is the latest firmware release good to go with images created
in this manner?

Daniel