On Wed, Apr 18, 2018 at 11:04:20AM +0800, Fam Zheng wrote:
> +static int qcow2_co_copy_range_to(BlockDriverState *bs,
> + BdrvChild *src, uint64_t src_offset,
> + BdrvChild *dst, uint64_t dst_offset,
> + uint64_t bytes, BdrvRequestFlags flags)
> +{In theory this could increment the refcount if src == dst. It's not necessary to go down to leaf nodes if the sharing can be handled at the qcow2 L2 table level.
signature.asc
Description: PGP signature
