dec_count
dec_count(io, region, error);
dec_count(io, region, BLK_STS_NOTSUPP);
dec_count(io, 0, 0);
int dec_count = 0;
while (dec_count < 8 * 8) {
for (i = 0; i < 64 - dec_count; i++)
dec_count += length + 1;
goto dec_count;
goto dec_count;
dec_count: