tree 5c661f17867fdba8be5c26d285e974297b7dfca0
parent 35ddd9300b81b70171da10134c36a7e22c845f16
author Max Reitz <mreitz@redhat.com> 1557424356 +0200
committer Kevin Wolf <kwolf@redhat.com> 1557499540 +0200

qemu-img: Use zero writes after source backing EOF

Past the end of the source backing file, we memset() buf_old to zero, so
it is clearly easy to use blk_pwrite_zeroes() instead of blk_pwrite()
then.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>