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authorMike Christie <michaelc@cs.wisc.edu>2011-02-25 14:04:28 -0600
committerJames Bottomley <James.Bottomley@suse.de>2011-02-28 11:21:53 -0600
commit3496343df5062d36354a106f19c9688a6ecf9734 (patch)
tree7c7c10526f9181211640b05e074fa45884d44eb3 /drivers/scsi/lpfc
parentf55ca84d92d0c249ce4f4b8d493657a59c359c5d (diff)
[SCSI] lpfc: block target when port queueing limit is hit
Instead of blocking the entire host when the port's queueing limit is hit, we should only block the port's target. This will allow IO to other ports to execute. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Acked-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/lpfc')
-rw-r--r--drivers/scsi/lpfc/lpfc_scsi.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index ff20abdc5095..bf34178b80bf 100644
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -3062,7 +3062,7 @@ lpfc_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
goto out_fail_command;
}
if (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth)
- goto out_host_busy;
+ goto out_tgt_busy;
lpfc_cmd = lpfc_get_scsi_buf(phba, ndlp);
if (lpfc_cmd == NULL) {
@@ -3179,6 +3179,9 @@ lpfc_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
out_host_busy:
return SCSI_MLQUEUE_HOST_BUSY;
+ out_tgt_busy:
+ return SCSI_MLQUEUE_TARGET_BUSY;
+
out_fail_command:
done(cmnd);
return 0;