diff options
| author | Wendy Xiong <wenxiong@linux.vnet.ibm.com> | 2014-01-21 22:16:39 +0400 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2014-03-20 02:04:38 +0400 |
| commit | 0b1f8d445b8cc5ac58786334f1ddaefa09fdf096 (patch) | |
| tree | a65f9408d454819c1a8592e5721f1460bd9eeeef /drivers | |
| parent | 0759c666a39f16ab3a42d37b1e8fb0f246f97f52 (diff) | |
| download | linux-0b1f8d445b8cc5ac58786334f1ddaefa09fdf096.tar.xz | |
[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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/ipr.c | 6 | ||||
| -rw-r--r-- | drivers/scsi/ipr.h | 1 |
2 files changed, 6 insertions, 1 deletions
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c index 3f5b56a99892..7e1276a35e41 100644 --- a/drivers/scsi/ipr.c +++ b/drivers/scsi/ipr.c @@ -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); } diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h index 9ce38a22647e..f66645c73492 100644 --- a/drivers/scsi/ipr.h +++ b/drivers/scsi/ipr.h @@ -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 */ |