target: remove acl_stop

Ensure we can use list_empty on the sess_acl_list to remove the need for
this flag.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

3 files changed, 7 insertions, 11 deletions

diff --git a/drivers/target/target_core_tpg.c b/drivers/target/target_core_tpg.c
index 88db4938600b..b1ac600f5b45 100644
--- a/drivers/target/target_core_tpg.c
+++ b/drivers/target/target_core_tpg.c
@@ -336,30 +336,27 @@ struct se_node_acl *core_tpg_add_initiator_node_acl(
         return acl;
 }
 
-static void target_shutdown_sessions(struct se_node_acl *acl, bool acl_stop)
+static void target_shutdown_sessions(struct se_node_acl *acl)
 {
         struct se_session *sess;
         unsigned long flags;
         int ret;
 
-        spin_lock_irqsave(&acl->nacl_sess_lock, flags);
-        if (acl_stop)
-                acl->acl_stop = 1;
 restart:
+        spin_lock_irqsave(&acl->nacl_sess_lock, flags);
         list_for_each_entry(sess, &acl->acl_sess_list, sess_acl_list) {
                 if (sess->sess_tearing_down)
                         continue;
                 if (!target_get_session(sess))
                         continue;
 
-                list_del(&sess->sess_acl_list);
+                list_del_init(&sess->sess_acl_list);
 
                 spin_unlock_irqrestore(&acl->nacl_sess_lock, flags);
                 ret = acl->se_tpg->se_tpg_tfo->shutdown_session(sess);
                 target_put_session(sess);
                 if (ret)
                         target_put_session(sess);
-                spin_lock_irqsave(&acl->nacl_sess_lock, flags);
                 goto restart;
         }
         spin_unlock_irqrestore(&acl->nacl_sess_lock, flags);
@@ -375,7 +372,7 @@ void core_tpg_del_initiator_node_acl(struct se_node_acl *acl)
         list_del(&acl->acl_list);
         mutex_unlock(&tpg->acl_node_mutex);
 
-        target_shutdown_sessions(acl, true);
+        target_shutdown_sessions(acl);
 
         target_put_nacl(acl);
         /*
@@ -415,7 +412,7 @@ int core_tpg_set_initiator_node_queue_depth(
         /*
          * Shutdown all pending sessions to force session reinstatement.
          */
-        target_shutdown_sessions(acl, false);
+        target_shutdown_sessions(acl);
 
         pr_debug("Successfully changed queue depth to: %d for Initiator"
                 " Node: %s on %s Target Portal Group: %u\n", acl->queue_depth,
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index ab2bf12975e1..ccd3a0eda0c8 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -499,8 +499,8 @@ void transport_deregister_session_configfs(struct se_session *se_sess)
         se_nacl = se_sess->se_node_acl;
         if (se_nacl) {
                 spin_lock_irqsave(&se_nacl->nacl_sess_lock, flags);
-                if (se_nacl->acl_stop == 0)
-                        list_del(&se_sess->sess_acl_list);
+                if (!list_empty(&se_sess->sess_acl_list))
+                        list_del_init(&se_sess->sess_acl_list);
                 /*
                  * If the session list is empty, then clear the pointer.
                  * Otherwise, set the struct se_session pointer from the tail
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index 3e0dd86360a2..1d4e1cb7f373 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -536,7 +536,6 @@ struct se_node_acl {
         char                    initiatorname[TRANSPORT_IQN_LEN];
         /* Used to signal demo mode created ACL, disabled by default */
         bool                    dynamic_node_acl;
-        bool                    acl_stop:1;
         u32                     queue_depth;
         u32                     acl_index;
         enum target_prot_type   saved_prot_type;