From: Mike Christie <michaelc@cs.wisc.edu>
Date: Fri, 25 Feb 2011 20:04:28 +0000 (-0600)
Subject: [SCSI] lpfc: block target when port queueing limit is hit
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=3496343df5062d36354a106f19c9688a6ecf9734;p=linux-beck.git

[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>
---

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;