iscsi-target: Convert to use target_put_session + sess_kref
This patch converts iscsi-target session code to use se_sess->sess_kref
counting for iscsi session shutdown. The following cases include:
*) last iscsit_close_connection() shutdown path to invoke close session
*) iscsit_logout_post_handler_closesession() for explict logout
*) iscsit_free_session() caller for explict shutdown
It also moves iscsit_stop_session() call from lio_tpg_close_session()
into lio_tpg_shutdown_session() TFO callbacks to invoke an explict
shutdown, and also changes iscsi_check_for_session_reinstatement()
login code to use se_sess->sess_kref.
(v2: Make iscsit_handle_time2retain_timeout() use target_put_session)
Cc: Andy Grover <agrover@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c
index dcef63b..1174f74 100644
--- a/drivers/target/iscsi/iscsi_target_configfs.c
+++ b/drivers/target/iscsi/iscsi_target_configfs.c
@@ -1698,8 +1698,8 @@
atomic_set(&sess->session_reinstatement, 1);
spin_unlock(&sess->conn_lock);
- iscsit_inc_session_usage_count(sess);
iscsit_stop_time2retain_timer(sess);
+ iscsit_stop_session(sess, 1, 1);
return 1;
}
@@ -1715,8 +1715,6 @@
* If the iSCSI Session for the iSCSI Initiator Node exists,
* forcefully shutdown the iSCSI NEXUS.
*/
- iscsit_stop_session(sess, 1, 1);
- iscsit_dec_session_usage_count(sess);
iscsit_close_session(sess);
}