[PATCH Xenial/Yakkety SRU] ibmvscsis: Add SGL limit

[Tim Gardner]

From: "Bryant G. Ly" <bryantly at linux.vnet.ibm.com>

BugLink: http://bugs.launchpad.net/bugs/1662551

This patch adds internal LIO sgl limit since the driver already
sets a max transfer limit on transport layer of 1MB to the client.

Cc: stable at vger.kernel.org
Tested-by: Steven Royer <seroyer at linux.vnet.ibm.com>
Signed-off-by: Bryant G. Ly <bryantly at linux.vnet.ibm.com>
Signed-off-by: Nicholas Bellinger <nab at linux-iscsi.org>
(cherry picked from commit b22bc27868e8c11fe3f00937a341b44f80b50364)
Signed-off-by: Tim Gardner <tim.gardner at canonical.com>
---
 drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c b/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c
index dfe4778..4bb5635 100644
--- a/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c
+++ b/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c
@@ -3818,6 +3818,7 @@ static struct configfs_attribute *ibmvscsis_tpg_attrs[] = {
 static const struct target_core_fabric_ops ibmvscsis_ops = {
 	.module				= THIS_MODULE,
 	.name				= "ibmvscsis",
+	.max_data_sg_nents		= MAX_TXU / PAGE_SIZE,
 	.get_fabric_name		= ibmvscsis_get_fabric_name,
 	.tpg_get_wwn			= ibmvscsis_get_fabric_wwn,
 	.tpg_get_tag			= ibmvscsis_get_tag,
-- 
2.7.4