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Subject[PATCH 3/3] target: Don't force session reset if queue_depth does not change
Date
From: Nicholas Bellinger <nab@linux-iscsi.org>

Keeping in the idempotent nature of target_core_fabric_configfs.c,
if a queue_depth value is set and it's the same as the existing
value, don't attempt to force session reinstatement.

Reported-by: Raghu Krishnamurthy <rk@datera.io>
Cc: Raghu Krishnamurthy <rk@datera.io>
Tested-by: Gary Guo <ghg@datera.io>
Cc: Gary Guo <ghg@datera.io>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
---
drivers/target/target_core_tpg.c | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/drivers/target/target_core_tpg.c b/drivers/target/target_core_tpg.c
index dfaef4d..310d9e5 100644
--- a/drivers/target/target_core_tpg.c
+++ b/drivers/target/target_core_tpg.c
@@ -398,6 +398,13 @@ int core_tpg_set_initiator_node_queue_depth(
struct se_portal_group *tpg = acl->se_tpg;

/*
+ * Allow the setting of se_node_acl queue_depth to be idempotent,
+ * and not force a session shutdown event if the value is not
+ * changing.
+ */
+ if (acl->queue_depth == queue_depth)
+ return 0;
+ /*
* User has requested to change the queue depth for a Initiator Node.
* Change the value in the Node's struct se_node_acl, and call
* target_set_nacl_queue_depth() to set the new queue depth.
--
1.9.1
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