target: Add se_node_acl->acl_kref for ->acl_free_comp usage

This patch adds se_node_acl->acl_kref for use with ->acl_free_comp
during explict se_node_acl release.  It adds kref_init() during
se_node_acl setup, kref_get() during __transport_register_session()
-> target_put_nacl() with existing transport_deregister_session()
fabric callback usage.

It also moves transport_free_session() to release *se_sess memory
after target_put_nacl() execution in transport_deregister_session()

Cc: Roland Dreier <roland@purestorage.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Joern Engel <joern@logfs.org>
Cc: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/target/target_core_tpg.c b/drivers/target/target_core_tpg.c
index 9cdfd061eacf..bbed260ec71f 100644
--- a/drivers/target/target_core_tpg.c
+++ b/drivers/target/target_core_tpg.c
@@ -274,6 +274,7 @@ struct se_node_acl *core_tpg_check_initiator_node_acl(
 
         INIT_LIST_HEAD(&acl->acl_list);
         INIT_LIST_HEAD(&acl->acl_sess_list);
+        kref_init(&acl->acl_kref);
         init_completion(&acl->acl_free_comp);
         spin_lock_init(&acl->device_list_lock);
         spin_lock_init(&acl->nacl_sess_lock);
@@ -403,6 +404,7 @@ struct se_node_acl *core_tpg_add_initiator_node_acl(
 
         INIT_LIST_HEAD(&acl->acl_list);
         INIT_LIST_HEAD(&acl->acl_sess_list);
+        kref_init(&acl->acl_kref);
         init_completion(&acl->acl_free_comp);
         spin_lock_init(&acl->device_list_lock);
         spin_lock_init(&acl->nacl_sess_lock);