On 05/26/16 17:08, Long Li wrote:
The block sector size should be in unit of 512 bytes, not in bytes.Signed-off-by: Long Li <lon...@microsoft.com> --- drivers/scsi/sd.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 428c03e..4bce17e 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -2862,9 +2862,11 @@ static int sd_revalidate_disk(struct gendisk *disk) if (sdkp->opt_xfer_blocks && sdkp->opt_xfer_blocks <= dev_max && sdkp->opt_xfer_blocks <= SD_DEF_XFER_BLOCKS && - sdkp->opt_xfer_blocks * sdp->sector_size >= PAGE_SIZE) - rw_max = q->limits.io_opt = + sdkp->opt_xfer_blocks * sdp->sector_size >= PAGE_SIZE) { + q->limits.io_opt = sdkp->opt_xfer_blocks * sdp->sector_size; + rw_max = (q->limits.io_opt >> 9); + } else rw_max = BLK_DEF_MAX_SECTORS;
Isn't this a duplicate of a patch Martin Petersen posted three weeks ago? See also http://thread.gmane.org/gmane.linux.scsi/113746.
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