88     QCowSnapshotExtraData extra;  in qcow2_do_read_snapshots()  local
151                             MIN(sizeof(extra), sn->extra_data_size), &extra, 0);  in qcow2_do_read_snapshots()
156         offset += MIN(sizeof(extra), sn->extra_data_size);  in qcow2_do_read_snapshots()
160             sn->vm_state_size = be64_to_cpu(extra.vm_state_size_large);  in qcow2_do_read_snapshots()
164             sn->disk_size = be64_to_cpu(extra.disk_size);  in qcow2_do_read_snapshots()
170             sn->icount = be64_to_cpu(extra.icount);  in qcow2_do_read_snapshots()
175         if (sn->extra_data_size > sizeof(extra)) {  in qcow2_do_read_snapshots()
179             extra_data_end = offset + sn->extra_data_size - sizeof(extra);  in qcow2_do_read_snapshots()
186             unknown_extra_data_size = sn->extra_data_size - sizeof(extra);  in qcow2_do_read_snapshots()
276     QCowSnapshotExtraData extra;  in qcow2_write_snapshots()  local
291         offset += MAX(sizeof(extra), sn->extra_data_size);  in qcow2_write_snapshots()
338         h.extra_data_size = cpu_to_be32(MAX(sizeof(extra),  in qcow2_write_snapshots()
341         memset(&extra, 0, sizeof(extra));  in qcow2_write_snapshots()
342         extra.vm_state_size_large = cpu_to_be64(sn->vm_state_size);  in qcow2_write_snapshots()
343         extra.disk_size = cpu_to_be64(sn->disk_size);  in qcow2_write_snapshots()
344         extra.icount = cpu_to_be64(sn->icount);  in qcow2_write_snapshots()
359         ret = bdrv_pwrite(bs->file, offset, sizeof(extra), &extra, 0);  in qcow2_write_snapshots()
363         offset += sizeof(extra);  in qcow2_write_snapshots()
365         if (sn->extra_data_size > sizeof(extra)) {  in qcow2_write_snapshots()
367                 sn->extra_data_size - sizeof(extra);  in qcow2_write_snapshots()