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[SCSI] ipr: Remove extended delay bit on GSCSI reads/writes ops 

This patch removes extended delay bit on GSCSI reads/writes ops, the
performance will be significanly better.

Signed-off-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Wendy Xiong 2014-01-21 12:16:39 -06:00 committed by James Bottomley
parent 0759c666a3
commit 0b1f8d445b
2 changed files with 6 additions and 1 deletions
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6
drivers/scsi/ipr.c
View File

@ -1143,6 +1143,7 @@ static void ipr_init_res_entry(struct ipr_resource_entry *res,
res->add_to_ml = 0;
res->del_from_ml = 0;
res->resetting_device = 0;
res->reset_occurred = 0;
res->sdev = NULL;
res->sata_port = NULL;
@ -5015,6 +5016,7 @@ static int __ipr_eh_dev_reset(struct scsi_cmnd *scsi_cmd)
} else
rc = ipr_device_reset(ioa_cfg, res);
res->resetting_device = 0;
res->reset_occurred = 1;
LEAVE;
return rc ? FAILED : SUCCESS;
@ -6183,8 +6185,10 @@ static int ipr_queuecommand(struct Scsi_Host *shost,
ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
if (ipr_is_gscsi(res))
if (ipr_is_gscsi(res) && res->reset_occurred) {
res->reset_occurred = 0;
ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
}
ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
}

1
drivers/scsi/ipr.h
View File

@ -1252,6 +1252,7 @@ struct ipr_resource_entry {
u8 add_to_ml:1;
u8 del_from_ml:1;
u8 resetting_device:1;
u8 reset_occurred:1;
u32 bus; /* AKA channel */
u32 target; /* AKA id */