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mpt3sas: Set maximum transfer length per IO to 4MB for VDs

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Set maximum transfer length per IO on RAID volumes to 4MB by setting
VD's queue's max_sector to 8192.

Signed-off-by: Chaitra P B <chaitra.basappa@broadcom.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Chaitra P B
2016-05-06 14:29:30 +05:30
committed by Martin K. Petersen
parent b2500d76a0
commit 6c19709384
2 changed files with 10 additions and 0 deletions
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8
drivers/scsi/mpt3sas/mpt3sas_scsih.c
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@@ -1909,6 +1909,14 @@ scsih_slave_configure(struct scsi_device *sdev)
(unsigned long long)raid_device->wwid,
raid_device->num_pds, ds);
if (shost->max_sectors > MPT3SAS_RAID_MAX_SECTORS) {
blk_queue_max_hw_sectors(sdev->request_queue,
MPT3SAS_RAID_MAX_SECTORS);
sdev_printk(KERN_INFO, sdev,
"Set queue's max_sector to: %u\n",
MPT3SAS_RAID_MAX_SECTORS);
}
scsih_change_queue_depth(sdev, qdepth);
/* raid transport support */