[SCSI] scsi_debug: fix lba and data length calculation bugs
For example, `modprobe scsi_debug virtual_gb=1100` gives:
scsi7 : scsi_debug, version 1.81 [
20070104], dev_size_mb=8, opts=0x0
scsi 7:0:0:0: Direct-Access Linux scsi_debug 0004 PQ: 0 ANSI: 5
sd 7:0:0:0: [sdc]
2306867200 512-byte hardware sectors (1181116 MB)
sd 7:0:0:0: [sdc] Write Protect is off
sd 7:0:0:0: [sdc] Mode Sense: 73 00 10 08
sd 7:0:0:0: [sdc] Write cache: enabled, read cache: enabled, supports DPO and FUA
sd 7:0:0:0: [sdc]
2306867200 512-byte hardware sectors (1181116 MB)
sd 7:0:0:0: [sdc] Write Protect is off
sd 7:0:0:0: [sdc] Mode Sense: 73 00 10 08
sd 7:0:0:0: [sdc] Write cache: enabled, read cache: enabled, supports DPO and FUA
sdc: unknown partition table
sd 7:0:0:0: [sdc] Attached SCSI disk
sd 7:0:0:0: Attached scsi generic sg6 type 0
end_request: I/O error, dev sdc, sector
2306867072
Buffer I/O error on device sdc, logical block
288358384
end_request: I/O error, dev sdc, sector
2306867072
Buffer I/O error on device sdc, logical block
288358384
end_request: I/O error, dev sdc, sector
2306867192
(snip)
Note that this converts all the calculations (including the correct
calculations) for unification.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>