sd: Optimal I/O size is in bytes, not sectors
authorMartin K. Petersen <martin.petersen@oracle.com>
Wed, 20 Jan 2016 16:01:23 +0000 (11:01 -0500)
committerMartin K. Petersen <martin.petersen@oracle.com>
Thu, 21 Jan 2016 00:51:34 +0000 (19:51 -0500)
commitd0eb20a863ba7dc1d3f4b841639671f134560be2
tree8e51077d4f13bbb5548e8352a4fd64660e90289d
parentc142ce0d3c6b070c248cef4bbe3a0f58cfd61f3f
sd: Optimal I/O size is in bytes, not sectors

Commit ca369d51b3e1 ("block/sd: Fix device-imposed transfer length
limits") accidentally switched optimal I/O size reporting from bytes to
block layer sectors.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Reported-by: Christian Borntraeger <borntraeger@de.ibm.com>
Tested-by: Christian Borntraeger <borntraeger@de.ibm.com>
Fixes: ca369d51b3e1649be4a72addd6d6a168cfb3f537
Cc: stable@vger.kernel.org # 4.4+
Reviewed-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Reviewed-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
drivers/scsi/sd.c