Commit 318c7c4325ad2c4e969a0b79008192ce8c054463
Committed by
James Bottomley
James Bottomley
1 parent
87aa619c17
Exists in
smarc-imx_3.14.28_1.0.0_ga
and in
1 other branch
[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>
Showing 1 changed file with 0 additions and 32 deletions Side-by-side Diff
drivers/scsi/fnic/fnic_scsi.c
| ... | ... | @@ -818,38 +818,6 @@ |
| 818 | 818 | if (icmnd_cmpl->flags & FCPIO_ICMND_CMPL_RESID_UNDER) |
| 819 | 819 | xfer_len -= icmnd_cmpl->residual; |
| 820 | 820 | |
| 821 | - /* | |
| 822 | - * If queue_full, then try to reduce queue depth for all | |
| 823 | - * LUNS on the target. Todo: this should be accompanied | |
| 824 | - * by a periodic queue_depth rampup based on successful | |
| 825 | - * IO completion. | |
| 826 | - */ | |
| 827 | - if (icmnd_cmpl->scsi_status == QUEUE_FULL) { | |
| 828 | - struct scsi_device *t_sdev; | |
| 829 | - int qd = 0; | |
| 830 | - | |
| 831 | - shost_for_each_device(t_sdev, sc->device->host) { | |
| 832 | - if (t_sdev->id != sc->device->id) | |
| 833 | - continue; | |
| 834 | - | |
| 835 | - if (t_sdev->queue_depth > 1) { | |
| 836 | - qd = scsi_track_queue_full | |
| 837 | - (t_sdev, | |
| 838 | - t_sdev->queue_depth - 1); | |
| 839 | - if (qd == -1) | |
| 840 | - qd = t_sdev->host->cmd_per_lun; | |
| 841 | - shost_printk(KERN_INFO, | |
| 842 | - fnic->lport->host, | |
| 843 | - "scsi[%d:%d:%d:%d" | |
| 844 | - "] queue full detected," | |
| 845 | - "new depth = %d\n", | |
| 846 | - t_sdev->host->host_no, | |
| 847 | - t_sdev->channel, | |
| 848 | - t_sdev->id, t_sdev->lun, | |
| 849 | - t_sdev->queue_depth); | |
| 850 | - } | |
| 851 | - } | |
| 852 | - } | |
| 853 | 821 | break; |
| 854 | 822 | |
| 855 | 823 | case FCPIO_TIMEOUT: /* request was timed out */ |