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>

2 files changed, 2 insertions, 0 deletions

diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index f8aa300b0d25..2cda5638a4cc 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -642,6 +642,7 @@ struct se_node_acl {
         struct list_head        acl_list;
         struct list_head        acl_sess_list;
         struct completion       acl_free_comp;
+        struct kref             acl_kref;
 };
 
 struct se_session {
diff --git a/include/target/target_core_fabric.h b/include/target/target_core_fabric.h
index 7e76aa167009..032c48753cfa 100644
--- a/include/target/target_core_fabric.h
+++ b/include/target/target_core_fabric.h
@@ -108,6 +108,7 @@ void	transport_register_session(struct se_portal_group *,
 void    target_get_session(struct se_session *);
 int     target_put_session(struct se_session *);
 void    transport_free_session(struct se_session *);
+void    target_put_nacl(struct se_node_acl *);
 void    transport_deregister_session_configfs(struct se_session *);
 void    transport_deregister_session(struct se_session *);