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scsi: libfc: Clarify ramp-down messages 

When the queue depth is reduced we should print out the reason
for this; it might be due to a queue full condition.

Signed-off-by: Hannes Reinecke <hare@suse.com>
Acked-by: Johannes Thumshirn <jth@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Hannes Reinecke 2016-10-13 15:10:48 +02:00 committed by Martin K. Petersen
parent 8acf1b50cf
commit 5d339d163a
1 changed files with 9 additions and 3 deletions
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12
drivers/scsi/libfc/fc_fcp.c
View File

@ -403,8 +403,6 @@ static void fc_fcp_can_queue_ramp_down(struct fc_lport *lport)
if (!can_queue)
can_queue = 1;
lport->host->can_queue = can_queue;
shost_printk(KERN_ERR, lport->host, "libfc: Could not allocate frame.\n"
"Reducing can_queue to %d.\n", can_queue);
unlock:
spin_unlock_irqrestore(lport->host->host_lock, flags);
@ -431,6 +429,9 @@ static inline struct fc_frame *fc_fcp_frame_alloc(struct fc_lport *lport,
put_cpu();
/* error case */
fc_fcp_can_queue_ramp_down(lport);
shost_printk(KERN_ERR, lport->host,
"libfc: Could not allocate frame, "
"reducing can_queue to %d.\n", lport->host->can_queue);
return NULL;
}
@ -1860,8 +1861,13 @@ int fc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *sc_cmd)
rpriv = rport->dd_data;
if (!fc_fcp_lport_queue_ready(lport)) {
if (lport->qfull)
if (lport->qfull) {
fc_fcp_can_queue_ramp_down(lport);
shost_printk(KERN_ERR, lport->host,
"libfc: queue full, "
"reducing can_queue to %d.\n",
lport->host->can_queue);
}
rc = SCSI_MLQUEUE_HOST_BUSY;
goto out;
}