The two callbacks are implemented quite similarly to the read/write
functions: bdrv_co_copy_range_from maps for read and calls into bs->file
or bs->backing depending on the allocation status; bdrv_co_copy_range_to
maps for write and calls into bs->file.
Reviewed-by: Stefan Hajnoczi
Signed-off-by:
On Mon, 05/28 11:36, Fam Zheng wrote:
> The two callbacks are implemented quite similarly to the read/write
> functions: bdrv_co_copy_range_from maps for read and calls into bs->file
> or bs->backing depending on the allocation status; bdrv_co_copy_range_to
> maps for write and calls into bs->file.
