On 10/20/2013 04:42 PM, Peter Lieven wrote:
> This adds 2 wrappers to read the unallocated_blocks_are_zero and
> can_write_zeroes_with_unmap info from the BDI. The wrappers are
> required to check for the existence of a backing_hd and
> if the devices are opened with the correct flags.
> 
> Signed-off-by: Peter Lieven <pl@kamp.de>
> ---
>  block.c               |   30 ++++++++++++++++++++++++++++++
>  include/block/block.h |    2 ++
>  2 files changed, 32 insertions(+)
> 

Reviewed-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org