On 28.06.20 13:02, Alberto Garcia wrote:
> There are situations in which we want to know how many contiguous
> subclusters of the same type there are in a given cluster. This can be
> done by simply iterating over the subclusters and repeatedly calling
> qcow2_get_subcluster_type() for each one of them.
> 
> However once we determined the type of a subcluster we can check the
> rest efficiently by counting the number of adjacent ones (or zeroes)
> in the bitmap. This is what this function does.
> 
> Signed-off-by: Alberto Garcia <berto@igalia.com>
> Reviewed-by: Eric Blake <eblake@redhat.com>
> ---
>  block/qcow2-cluster.c | 51 +++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 51 insertions(+)

Reviewed-by: Max Reitz <mreitz@redhat.com>