419 	off_t b0, b1, sectorcount, step;  in speeddisk()  local
425 	sectorcount = mediasize / sectorsize;  in speeddisk()
426 	if (mediasize < 1024 * 1024 || sectorcount < 2048)  in speeddisk()
430 	step = 1ULL << (flsll(sectorcount / (4 * 200)) - 1);  in speeddisk()
440 	b1 = sectorcount - step;  in speeddisk()
451 	b0 = sectorcount / 4;  in speeddisk()
452 	b1 = b0 + sectorcount / 2;  in speeddisk()
462 	b0 = sectorcount / 4;  in speeddisk()
463 	b1 = b0 + sectorcount / 4;  in speeddisk()
474 	b0 = sectorcount / 2;  in speeddisk()
483 	b0 = sectorcount / 2;  in speeddisk()
501 	b0 = sectorcount - 2048;  in speeddisk()
519 	b0 = sectorcount / 2 - bulk * (1024*1024 / sectorsize) / 2 - 1;  in speeddisk()
528 	b0 = sectorcount - bulk * (1024*1024 / sectorsize) - 1;  in speeddisk()
575 	off_t sectorcount;  in iops()  local
578 	sectorcount = mediasize / sectorsize;  in iops()
593 		aiop->aio_offset = (random() % (sectorcount)) * sectorsize;  in iops()
615 			aiop->aio_offset = (random() % (sectorcount)) * sectorsize;  in iops()