The cmd_per_lun value is used by scsi-ml as fall back lowest
queue_depth value but in case of libfc cmd_per_lun is set to
same value as max queue_depth = 32.
So this patch reduces cmd_per_lun value to 3 and configures
each lun with default max queue_depth 32 in fc_slave_alloc.
Signed-off-by: Vasu Dev <vasu.dev@xxxxxxxxx>
---
drivers/scsi/fcoe/fcoe.c | 2 +-
drivers/scsi/libfc/fc_fcp.c | 14 ++++++--------
2 files changed, 7 insertions(+), 9 deletions(-)
diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c
index 704b8e0..64fd867 100644
--- a/drivers/scsi/fcoe/fcoe.c
+++ b/drivers/scsi/fcoe/fcoe.c
@@ -137,7 +137,7 @@ static struct scsi_host_template fcoe_shost_template = {
.change_queue_depth = fc_change_queue_depth,
.change_queue_type = fc_change_queue_type,
.this_id = -1,
- .cmd_per_lun = 32,
+ .cmd_per_lun = 3,
.can_queue = FCOE_MAX_OUTSTANDING_COMMANDS,
.use_clustering = ENABLE_CLUSTERING,
.sg_tablesize = SG_ALL,
diff --git a/drivers/scsi/libfc/fc_fcp.c b/drivers/scsi/libfc/fc_fcp.c
index 4037685..dda4162 100644
--- a/drivers/scsi/libfc/fc_fcp.c
+++ b/drivers/scsi/libfc/fc_fcp.c
@@ -2031,18 +2031,16 @@ EXPORT_SYMBOL(fc_eh_host_reset);
int fc_slave_alloc(struct scsi_device *sdev)
{
struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
- int queue_depth;
if (!rport || fc_remote_port_chkready(rport))
return -ENXIO;
- if (sdev->tagged_supported) {
- if (sdev->host->hostt->cmd_per_lun)
- queue_depth = sdev->host->hostt->cmd_per_lun;
- else
- queue_depth = FC_FCP_DFLT_QUEUE_DEPTH;
- scsi_activate_tcq(sdev, queue_depth);
- }
+ if (sdev->tagged_supported)
+ scsi_activate_tcq(sdev, FC_FCP_DFLT_QUEUE_DEPTH);
+ else
+ scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev),
+ FC_FCP_DFLT_QUEUE_DEPTH);
+
return 0;
}
EXPORT_SYMBOL(fc_slave_alloc);
--
To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
