| Message ID | 1462525171-6877-6-git-send-email-chaitra.basappa@broadcom.com (mailing list archive) |
|---|---|
| State | Accepted, archived |
| Headers | show |
On 6.5.2016 10:59, Chaitra P B wrote: > 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> Tomas -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.h b/drivers/scsi/mpt3sas/mpt3sas_base.h index aa918aa..e1befba 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_base.h +++ b/drivers/scsi/mpt3sas/mpt3sas_base.h @@ -112,6 +112,8 @@ #define MPT3SAS_SAS_QUEUE_DEPTH 254 #define MPT3SAS_RAID_QUEUE_DEPTH 128 +#define MPT3SAS_RAID_MAX_SECTORS 8192 + #define MPT_NAME_LENGTH 32 /* generic length of strings */ #define MPT_STRING_LENGTH 64 diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c index 0fea937..abd8717 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c +++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c @@ -1911,6 +1911,14 @@ 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 */
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> --- drivers/scsi/mpt3sas/mpt3sas_base.h | 2 ++ drivers/scsi/mpt3sas/mpt3sas_scsih.c | 8 ++++++++ 2 files changed, 10 insertions(+)