diff --git a/include/target/target_core_backend.h b/include/target/target_core_backend.h
index 2f54649..2d7db85 100644
--- a/include/target/target_core_backend.h
+++ b/include/target/target_core_backend.h
@@ -23,12 +23,11 @@
 	struct se_device *(*create_virtdevice)(struct se_hba *,
 				struct se_subsystem_dev *, void *);
 	void (*free_device)(void *);
-	int (*transport_complete)(struct se_task *task);
-	struct se_task *(*alloc_task)(unsigned char *cdb);
-	int (*do_task)(struct se_task *);
+	int (*transport_complete)(struct se_cmd *cmd, struct scatterlist *);
+	int (*execute_cmd)(struct se_cmd *, struct scatterlist *, u32,
+			enum dma_data_direction);
 	int (*do_discard)(struct se_device *, sector_t, u32);
 	void (*do_sync_cache)(struct se_cmd *);
-	void (*free_task)(struct se_task *);
 	ssize_t (*check_configfs_dev_params)(struct se_hba *,
 			struct se_subsystem_dev *);
 	ssize_t (*set_configfs_dev_params)(struct se_hba *,
@@ -38,7 +37,7 @@
 	u32 (*get_device_rev)(struct se_device *);
 	u32 (*get_device_type)(struct se_device *);
 	sector_t (*get_blocks)(struct se_device *);
-	unsigned char *(*get_sense_buffer)(struct se_task *);
+	unsigned char *(*get_sense_buffer)(struct se_cmd *);
 };
 
 int	transport_subsystem_register(struct se_subsystem_api *);
@@ -48,8 +47,6 @@
 		struct se_subsystem_api *, struct se_subsystem_dev *, u32,
 		void *, struct se_dev_limits *, const char *, const char *);
 
-void	transport_complete_sync_cache(struct se_cmd *, int);
-void	transport_complete_task(struct se_task *, int);
 void	target_complete_cmd(struct se_cmd *, u8);
 
 void	transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *);
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index 9ea87e6..55a80bd 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -477,14 +477,6 @@
 	wait_queue_head_t	thread_wq;
 };
 
-struct se_task {
-	struct se_cmd		*task_se_cmd;
-	struct scatterlist	*task_sg;
-	u32			task_sg_nents;
-	u8			task_scsi_status;
-	enum dma_data_direction	task_data_direction;
-};
-
 struct se_tmr_req {
 	/* Task Management function to be performed */
 	u8			function;
@@ -592,7 +584,8 @@
 	/* old task stop completion, consider merging with some of the above */
 	struct completion	task_stop_comp;
 
-	struct se_task		*t_task;
+	/* backend private data */
+	void			*priv;
 };
 
 struct se_ua {