qcow2: Remove BDS parameter from qcow2_cache_discard()
This function was only using the BlockDriverState parameter to pass it
to qcow2_cache_get_table_idx() and qcow2_cache_table_release(). This
is no longer necessary so this parameter can be removed.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-id:
9724f7e38e763ad3be32627c6b7fe8df9edb1476.
1517840877.git.berto@igalia.com
Signed-off-by: Max Reitz <mreitz@redhat.com>