[Libguestfs] [nbdkit PATCH 3/3] filters: Add nozero filter

[Richard W.M. Jones]

On Tue, Jan 23, 2018 at 10:10:15PM -0600, Eric Blake wrote:
> Sometimes, it's nice to see what a difference it makes in timing
> or in destination file size when sparse handling is enabled or
> disabled.  Add a new filter that makes it trivial to disable
> write zero support.
> 
> Signed-off-by: Eric Blake <eblake at redhat.com>

This one looks fine, ACK.

Rich.

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