target: Make target_put_sess_cmd use target_release_cmd_kref

This patch moves target_put_sess_cmd() to use a se_cmd->cmd_kref
callback target_release_cmd_kref when performing driver release of
fabric->se_cmd descriptor memory.  It sets the default cmd_kref
count value to '2' within target_get_sess_cmd() setup, and
currently assumes TFO->check_stop_free() usage.

It drops se_tfo->check_release_cmd() usage in the main
transport_release_cmd codepath.

Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index cadd4f6e57e1..af088a9e4905 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -541,6 +541,7 @@ struct se_cmd {
         struct list_head        se_queue_node;
         struct list_head        se_cmd_list;
         struct completion       cmd_wait_comp;
+        struct kref             cmd_kref;
         struct target_core_fabric_ops *se_tfo;
         int (*execute_task)(struct se_task *);
         void (*transport_complete_callback)(struct se_cmd *);