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authorSuma Ramars <sramars@cisco.com>2013-09-09 13:31:48 -0700
committerJames Bottomley <JBottomley@Parallels.com>2013-09-11 15:49:30 -0700
commit318c7c4325ad2c4e969a0b79008192ce8c054463 (patch)
treee16bf9acf97a54ab03eca050d3dbcfaab5fe1efd
parent87aa619c17976ac799b30110e830cf86d2e2e99a (diff)
downloadop-kernel-dev-318c7c4325ad2c4e969a0b79008192ce8c054463.zip
op-kernel-dev-318c7c4325ad2c4e969a0b79008192ce8c054463.tar.gz
[SCSI] fnic: Remove QUEUE_FULL handling code
Remove fnic driver QUEUE_FULL handling code instead let SCSI mid layer handle queue full and use its algorithm to ramp down/up queue Signed-off-by: Suma Ramars <sramars@cisco.com> Signed-off-by: Hiral Patel <hiralpat@cisco.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
-rw-r--r--drivers/scsi/fnic/fnic_scsi.c32
1 files changed, 0 insertions, 32 deletions
diff --git a/drivers/scsi/fnic/fnic_scsi.c b/drivers/scsi/fnic/fnic_scsi.c
index a97e6e5..4ff0a33 100644
--- a/drivers/scsi/fnic/fnic_scsi.c
+++ b/drivers/scsi/fnic/fnic_scsi.c
@@ -818,38 +818,6 @@ static void fnic_fcpio_icmnd_cmpl_handler(struct fnic *fnic,
if (icmnd_cmpl->flags & FCPIO_ICMND_CMPL_RESID_UNDER)
xfer_len -= icmnd_cmpl->residual;
- /*
- * If queue_full, then try to reduce queue depth for all
- * LUNS on the target. Todo: this should be accompanied
- * by a periodic queue_depth rampup based on successful
- * IO completion.
- */
- if (icmnd_cmpl->scsi_status == QUEUE_FULL) {
- struct scsi_device *t_sdev;
- int qd = 0;
-
- shost_for_each_device(t_sdev, sc->device->host) {
- if (t_sdev->id != sc->device->id)
- continue;
-
- if (t_sdev->queue_depth > 1) {
- qd = scsi_track_queue_full
- (t_sdev,
- t_sdev->queue_depth - 1);
- if (qd == -1)
- qd = t_sdev->host->cmd_per_lun;
- shost_printk(KERN_INFO,
- fnic->lport->host,
- "scsi[%d:%d:%d:%d"
- "] queue full detected,"
- "new depth = %d\n",
- t_sdev->host->host_no,
- t_sdev->channel,
- t_sdev->id, t_sdev->lun,
- t_sdev->queue_depth);
- }
- }
- }
break;
case FCPIO_TIMEOUT: /* request was timed out */
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