[SCSI] zfcp: add queue_full sysfs attribute
Adds a new sysfs attribute queue_full for adapters that records the number
of incidents where a requests could not be submitted due to insufficient
free space on the request queue.
Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com>
Signed-off-by: Martin Peschke <mp3@de.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/drivers/s390/scsi/zfcp_qdio.c b/drivers/s390/scsi/zfcp_qdio.c
index 69d632d..cc49eaa 100644
--- a/drivers/s390/scsi/zfcp_qdio.c
+++ b/drivers/s390/scsi/zfcp_qdio.c
@@ -282,6 +282,7 @@
addr += length, remaining -= length) {
sbale = zfcp_qdio_sbale_next(fsf_req, sbtype);
if (!sbale) {
+ atomic_inc(&fsf_req->adapter->qdio_outb_full);
zfcp_qdio_undo_sbals(fsf_req);
return -EINVAL;
}