target: simply fabric driver queue full processing

There is no need to schedule the delayed processing in a workqueue that
offloads it to the target processing thread.  Instead execute it directly
from the workqueue.  There will be a lot of future work in this area,
which I'd likfe to defer for now as it is not nessecary for getting rid
of the target processing thread.

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

diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 1f28d18..68f0c8d 100644 (file)
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -720,6 +720,8 @@ static void target_add_to_state_list(struct se_cmd *cmd)
 /*
  * Handle QUEUE_FULL / -EAGAIN and -ENOMEM status
  */
+static void transport_write_pending_qf(struct se_cmd *cmd);
+static void transport_complete_qf(struct se_cmd *cmd);
 
 static void target_qf_do_work(struct work_struct *work)
 {
@@ -743,7 +745,10 @@ static void target_qf_do_work(struct work_struct *work)
                        (cmd->t_state == TRANSPORT_COMPLETE_QF_WP) ? "WRITE_PENDING"
                        : "UNKNOWN");
 
-               transport_add_cmd_to_queue(cmd, cmd->t_state, true);
+               if (cmd->t_state == TRANSPORT_COMPLETE_QF_WP)
+                       transport_write_pending_qf(cmd);
+               else if (cmd->t_state == TRANSPORT_COMPLETE_QF_OK)
+                       transport_complete_qf(cmd);
        }
 }
 
@@ -3262,12 +3267,6 @@ get_cmd:
                case TRANSPORT_PROCESS_TMR:
                        transport_generic_do_tmr(cmd);
                        break;
-               case TRANSPORT_COMPLETE_QF_WP:
-                       transport_write_pending_qf(cmd);
-                       break;
-               case TRANSPORT_COMPLETE_QF_OK:
-                       transport_complete_qf(cmd);
-                       break;
                default:
                        pr_err("Unknown t_state: %d  for ITT: 0x%08x "
                                "i_state: %d on SE LUN: %u\n",