target: merge release_cmd methods

The release_cmd_to_pool and release_cmd_direct methods are always the same.
Merge them into a single release_cmd method, and clean up the fallout.

(nab: fix breakage in transport_generic_free_cmd() parameter build breakage
 in drivers/target/tcm_fc/tfc_cmd.c)

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

drivers/target/loopback/tcm_loop.c

@@ -204,13 +204,10 @@ static void tcm_loop_check_stop_free(struct se_cmd *se_cmd)
 	 * Release the struct se_cmd, which will make a callback to release
 	 * struct tcm_loop_cmd * in tcm_loop_deallocate_core_cmd()
 	 */
-	transport_generic_free_cmd(se_cmd, 0, 1, 0);
+	transport_generic_free_cmd(se_cmd, 0, 0);
 }
 
-/*
- * Called from struct target_core_fabric_ops->release_cmd_to_pool()
- */
-static void tcm_loop_deallocate_core_cmd(struct se_cmd *se_cmd)
+static void tcm_loop_release_cmd(struct se_cmd *se_cmd)
 {
 	struct tcm_loop_cmd *tl_cmd = container_of(se_cmd,
 				struct tcm_loop_cmd, tl_se_cmd);
@@ -395,7 +392,7 @@ static int tcm_loop_device_reset(struct scsi_cmnd *sc)
 		SUCCESS : FAILED;
 release:
 	if (se_cmd)
-		transport_generic_free_cmd(se_cmd, 1, 1, 0);
+		transport_generic_free_cmd(se_cmd, 1, 0);
 	else
 		kmem_cache_free(tcm_loop_cmd_cache, tl_cmd);
 	kfree(tl_tmr);
@@ -1418,8 +1415,7 @@ static int tcm_loop_register_configfs(void)
 	 */
 	fabric->tf_ops.new_cmd_map = &tcm_loop_new_cmd_map;
 	fabric->tf_ops.check_stop_free = &tcm_loop_check_stop_free;
-	fabric->tf_ops.release_cmd_to_pool = &tcm_loop_deallocate_core_cmd;
-	fabric->tf_ops.release_cmd_direct = &tcm_loop_deallocate_core_cmd;
+	fabric->tf_ops.release_cmd = &tcm_loop_release_cmd;
 	fabric->tf_ops.shutdown_session = &tcm_loop_shutdown_session;
 	fabric->tf_ops.close_session = &tcm_loop_close_session;
 	fabric->tf_ops.stop_session = &tcm_loop_stop_session;

drivers/target/target_core_configfs.c

@@ -427,12 +427,8 @@ static int target_fabric_tf_ops_check(
 		printk(KERN_ERR "Missing tfo->tpg_get_inst_index()\n");
 		return -EINVAL;
 	}
-	if (!(tfo->release_cmd_to_pool)) {
-		printk(KERN_ERR "Missing tfo->release_cmd_to_pool()\n");
-		return -EINVAL;
-	}
-	if (!(tfo->release_cmd_direct)) {
-		printk(KERN_ERR "Missing tfo->release_cmd_direct()\n");
+	if (!tfo->release_cmd) {
+		printk(KERN_ERR "Missing tfo->release_cmd()\n");
 		return -EINVAL;
 	}
 	if (!(tfo->shutdown_session)) {

drivers/target/target_core_transport.c

@@ -212,7 +212,7 @@ static u32 transport_allocate_tasks(struct se_cmd *cmd,
 		struct list_head *mem_list, int set_counts);
 static int transport_generic_get_mem(struct se_cmd *cmd, u32 length);
 static int transport_generic_remove(struct se_cmd *cmd,
-		int release_to_pool, int session_reinstatement);
+		int session_reinstatement);
 static int transport_cmd_get_valid_sectors(struct se_cmd *cmd);
 static int transport_map_sg_to_mem(struct se_cmd *cmd,
 		struct list_head *se_mem_list, struct scatterlist *sgl);
@@ -737,7 +737,7 @@ void transport_cmd_finish_abort(struct se_cmd *cmd, int remove)
 	if (transport_cmd_check_stop_to_fabric(cmd))
 		return;
 	if (remove)
-		transport_generic_remove(cmd, 0, 0);
+		transport_generic_remove(cmd, 0);
 }
 
 void transport_cmd_finish_abort_tmr(struct se_cmd *cmd)
@@ -747,7 +747,7 @@ void transport_cmd_finish_abort_tmr(struct se_cmd *cmd)
 	if (transport_cmd_check_stop_to_fabric(cmd))
 		return;
 
-	transport_generic_remove(cmd, 0, 0);
+	transport_generic_remove(cmd, 0);
 }
 
 static void transport_add_cmd_to_queue(
@@ -2146,7 +2146,7 @@ static void transport_generic_request_timeout(struct se_cmd *cmd)
 	}
 	spin_unlock_irqrestore(&cmd->t_state_lock, flags);
 
-	transport_generic_remove(cmd, 0, 0);
+	transport_generic_remove(cmd, 0);
 }
 
 static int
@@ -3825,13 +3825,11 @@ static void transport_release_fe_cmd(struct se_cmd *cmd)
 free_pages:
 	transport_free_pages(cmd);
 	transport_free_se_cmd(cmd);
-	cmd->se_tfo->release_cmd_direct(cmd);
+	cmd->se_tfo->release_cmd(cmd);
 }
 
-static int transport_generic_remove(
-	struct se_cmd *cmd,
-	int release_to_pool,
-	int session_reinstatement)
+static int
+transport_generic_remove(struct se_cmd *cmd, int session_reinstatement)
 {
 	unsigned long flags;
 
@@ -3858,14 +3856,7 @@ static int transport_generic_remove(
 
 free_pages:
 	transport_free_pages(cmd);
-
-	if (release_to_pool) {
-		transport_release_cmd_to_pool(cmd);
-	} else {
-		transport_free_se_cmd(cmd);
-		cmd->se_tfo->release_cmd_direct(cmd);
-	}
-
+	transport_release_cmd(cmd);
 	return 0;
 }
 
@@ -4894,18 +4885,14 @@ static int transport_generic_write_pending(struct se_cmd *cmd)
 	return PYX_TRANSPORT_WRITE_PENDING;
 }
 
-/*	transport_release_cmd_to_pool():
- *
- *
- */
-void transport_release_cmd_to_pool(struct se_cmd *cmd)
+void transport_release_cmd(struct se_cmd *cmd)
 {
 	BUG_ON(!cmd->se_tfo);
 
 	transport_free_se_cmd(cmd);
-	cmd->se_tfo->release_cmd_to_pool(cmd);
+	cmd->se_tfo->release_cmd(cmd);
 }
-EXPORT_SYMBOL(transport_release_cmd_to_pool);
+EXPORT_SYMBOL(transport_release_cmd);
 
 /*	transport_generic_free_cmd():
  *
@@ -4914,11 +4901,10 @@ EXPORT_SYMBOL(transport_release_cmd_to_pool);
 void transport_generic_free_cmd(
 	struct se_cmd *cmd,
 	int wait_for_tasks,
-	int release_to_pool,
 	int session_reinstatement)
 {
 	if (!(cmd->se_cmd_flags & SCF_SE_LUN_CMD))
-		transport_release_cmd_to_pool(cmd);
+		transport_release_cmd(cmd);
 	else {
 		core_dec_lacl_count(cmd->se_sess->se_node_acl, cmd);
 
@@ -4936,8 +4922,7 @@ void transport_generic_free_cmd(
 
 		transport_free_dev_tasks(cmd);
 
-		transport_generic_remove(cmd, release_to_pool,
-				session_reinstatement);
+		transport_generic_remove(cmd, session_reinstatement);
 	}
 }
 EXPORT_SYMBOL(transport_generic_free_cmd);
@@ -5210,7 +5195,7 @@ remove:
 	if (!remove_cmd)
 		return;
 
-	transport_generic_free_cmd(cmd, 0, 0, session_reinstatement);
+	transport_generic_free_cmd(cmd, 0, session_reinstatement);
 }
 
 static int transport_get_sense_codes(
@@ -5616,7 +5601,7 @@ static void transport_processing_shutdown(struct se_device *dev)
 				transport_lun_remove_cmd(cmd);
 
 				if (transport_cmd_check_stop(cmd, 1, 0))
-					transport_generic_remove(cmd, 0, 0);
+					transport_generic_remove(cmd, 0);
 			}
 
 			spin_lock_irqsave(&dev->execute_task_lock, flags);
@@ -5644,7 +5629,7 @@ static void transport_processing_shutdown(struct se_device *dev)
 			transport_lun_remove_cmd(cmd);
 
 			if (transport_cmd_check_stop(cmd, 1, 0))
-				transport_generic_remove(cmd, 0, 0);
+				transport_generic_remove(cmd, 0);
 		}
 
 		spin_lock_irqsave(&dev->execute_task_lock, flags);
@@ -5667,7 +5652,7 @@ static void transport_processing_shutdown(struct se_device *dev)
 		} else {
 			transport_lun_remove_cmd(cmd);
 			if (transport_cmd_check_stop(cmd, 1, 0))
-				transport_generic_remove(cmd, 0, 0);
+				transport_generic_remove(cmd, 0);
 		}
 	}
 }
@@ -5739,10 +5724,10 @@ get_cmd:
 			transport_generic_complete_ok(cmd);
 			break;
 		case TRANSPORT_REMOVE:
-			transport_generic_remove(cmd, 1, 0);
+			transport_generic_remove(cmd, 0);
 			break;
 		case TRANSPORT_FREE_CMD_INTR:
-			transport_generic_free_cmd(cmd, 0, 1, 0);
+			transport_generic_free_cmd(cmd, 0, 0);
 			break;
 		case TRANSPORT_PROCESS_TMR:
 			transport_generic_do_tmr(cmd);

drivers/target/tcm_fc/tfc_cmd.c

@@ -147,7 +147,7 @@ void ft_release_cmd(struct se_cmd *se_cmd)
 
 void ft_check_stop_free(struct se_cmd *se_cmd)
 {
-	transport_generic_free_cmd(se_cmd, 0, 1, 0);
+	transport_generic_free_cmd(se_cmd, 0, 0);
 }
 
 /*
@@ -304,7 +304,7 @@ static void ft_recv_seq(struct fc_seq *sp, struct fc_frame *fp, void *arg)
 		/* XXX need to find cmd if queued */
 		cmd->se_cmd.t_state = TRANSPORT_REMOVE;
 		cmd->seq = NULL;
-		transport_generic_free_cmd(&cmd->se_cmd, 0, 1, 0);
+		transport_generic_free_cmd(&cmd->se_cmd, 0, 0);
 		return;
 	}
 
@@ -321,7 +321,7 @@ static void ft_recv_seq(struct fc_seq *sp, struct fc_frame *fp, void *arg)
 		printk(KERN_INFO "%s: unhandled frame r_ctl %x\n",
 		       __func__, fh->fh_r_ctl);
 		fc_frame_free(fp);
-		transport_generic_free_cmd(&cmd->se_cmd, 0, 1, 0);
+		transport_generic_free_cmd(&cmd->se_cmd, 0, 0);
 		break;
 	}
 }
@@ -443,7 +443,7 @@ static void ft_send_tm(struct ft_cmd *cmd)
 			sess = cmd->sess;
 			transport_send_check_condition_and_sense(&cmd->se_cmd,
 				cmd->se_cmd.scsi_sense_reason, 0);
-			transport_generic_free_cmd(&cmd->se_cmd, 0, 1, 0);
+			transport_generic_free_cmd(&cmd->se_cmd, 0, 0);
 			ft_sess_put(sess);
 			return;
 		}
@@ -645,7 +645,7 @@ static void ft_send_cmd(struct ft_cmd *cmd)
 	if (ret == -ENOMEM) {
 		transport_send_check_condition_and_sense(se_cmd,
 				TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE, 0);
-		transport_generic_free_cmd(se_cmd, 0, 1, 0);
+		transport_generic_free_cmd(se_cmd, 0, 0);
 		return;
 	}
 	if (ret == -EINVAL) {
@@ -654,7 +654,7 @@ static void ft_send_cmd(struct ft_cmd *cmd)
 		else
 			transport_send_check_condition_and_sense(se_cmd,
 					se_cmd->scsi_sense_reason, 0);
-		transport_generic_free_cmd(se_cmd, 0, 1, 0);
+		transport_generic_free_cmd(se_cmd, 0, 0);
 		return;
 	}
 	transport_generic_handle_cdb(se_cmd);

drivers/target/tcm_fc/tfc_conf.c

@@ -536,8 +536,7 @@ static struct target_core_fabric_ops ft_fabric_ops = {
 	.tpg_release_fabric_acl =	ft_tpg_release_fabric_acl,
 	.tpg_get_inst_index =		ft_tpg_get_inst_index,
 	.check_stop_free =		ft_check_stop_free,
-	.release_cmd_to_pool =		ft_release_cmd,
-	.release_cmd_direct =		ft_release_cmd,
+	.release_cmd =			ft_release_cmd,
 	.shutdown_session =		ft_sess_shutdown,
 	.close_session =		ft_sess_close,
 	.stop_session =			ft_sess_stop,

include/target/target_core_fabric_ops.h

@@ -43,8 +43,7 @@ struct target_core_fabric_ops {
 	 * I/O descriptor in transport_cmd_check_stop()
 	 */
 	void (*check_stop_free)(struct se_cmd *);
-	void (*release_cmd_to_pool)(struct se_cmd *);
-	void (*release_cmd_direct)(struct se_cmd *);
+	void (*release_cmd)(struct se_cmd *);
 	/*
 	 * Called with spin_lock_bh(struct se_portal_group->session_lock held.
 	 */

include/target/target_core_transport.h

@@ -179,8 +179,8 @@ extern int transport_clear_lun_from_sessions(struct se_lun *);
 extern int transport_check_aborted_status(struct se_cmd *, int);
 extern int transport_send_check_condition_and_sense(struct se_cmd *, u8, int);
 extern void transport_send_task_abort(struct se_cmd *);
-extern void transport_release_cmd_to_pool(struct se_cmd *);
-extern void transport_generic_free_cmd(struct se_cmd *, int, int, int);
+extern void transport_release_cmd(struct se_cmd *);
+extern void transport_generic_free_cmd(struct se_cmd *, int, int);
 extern void transport_generic_wait_for_cmds(struct se_cmd *, int);
 extern int transport_init_task_sg(struct se_task *, struct se_mem *, u32);
 extern int transport_map_mem_to_sg(struct se_task *, struct list_head *,