target: remove the t_task_cdbs_left field in struct se_cmd

Now that tasks are gone we are guaranteed to only get a single completion
per command, and thus don't need this counter.

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

3 files changed, 1 insertions, 13 deletions

diff --git a/drivers/target/target_core_tmr.c b/drivers/target/target_core_tmr.c
index 6e2378a88bda..bd0b4e62e9c6 100644
--- a/drivers/target/target_core_tmr.c
+++ b/drivers/target/target_core_tmr.c
@@ -313,11 +313,9 @@ static void core_tmr_drain_state_list(
                         cmd->se_tfo->get_cmd_state(cmd), cmd->t_state,
                         cmd->t_task_cdb[0]);
                 pr_debug("LUN_RESET: ITT[0x%08x] - pr_res_key: 0x%016Lx"
-                        " t_task_cdbs_left: %d"
                         " -- CMD_T_ACTIVE: %d"
                         " CMD_T_STOP: %d CMD_T_SENT: %d\n",
                         cmd->se_tfo->get_task_tag(cmd), cmd->pr_res_key,
-                        atomic_read(&cmd->t_task_cdbs_left),
                         (cmd->transport_state & CMD_T_ACTIVE) != 0,
                         (cmd->transport_state & CMD_T_STOP) != 0,
                         (cmd->transport_state & CMD_T_SENT) != 0);
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 47669c6d9175..28df7b8ea9c4 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -700,11 +700,6 @@ void target_complete_cmd(struct se_cmd *cmd, u8 scsi_status)
         if (!success)
                 cmd->transport_state |= CMD_T_FAILED;
 
-        if (!atomic_dec_and_test(&cmd->t_task_cdbs_left)) {
-                spin_unlock_irqrestore(&cmd->t_state_lock, flags);
-                return;
-        }
-
         /*
          * Check for case where an explict ABORT_TASK has been received
          * and transport_wait_for_tasks() will be waiting for completion..
@@ -1755,7 +1750,6 @@ bool target_stop_cmd(struct se_cmd *cmd, unsigned long *flags)
                 pr_debug("cmd %p stopped successfully\n", cmd);
 
                 spin_lock_irqsave(&cmd->t_state_lock, *flags);
-                atomic_dec(&cmd->t_task_cdbs_left);
                 cmd->transport_state &= ~CMD_T_REQUEST_STOP;
                 cmd->transport_state &= ~CMD_T_BUSY;
                 was_active = true;
@@ -1777,10 +1771,8 @@ void transport_generic_request_failure(struct se_cmd *cmd)
         pr_debug("-----[ i_state: %d t_state: %d scsi_sense_reason: %d\n",
                 cmd->se_tfo->get_cmd_state(cmd),
                 cmd->t_state, cmd->scsi_sense_reason);
-        pr_debug("-----[ t_task_cdbs_left: %d"
-                " t_task_cdbs_ex_left: %d --"
+        pr_debug("-----[ t_task_cdbs_ex_left: %d --"
                 " CMD_T_ACTIVE: %d CMD_T_STOP: %d CMD_T_SENT: %d\n",
-                atomic_read(&cmd->t_task_cdbs_left),
                 atomic_read(&cmd->t_task_cdbs_ex_left),
                 (cmd->transport_state & CMD_T_ACTIVE) != 0,
                 (cmd->transport_state & CMD_T_STOP) != 0,
@@ -3511,7 +3503,6 @@ int transport_generic_new_cmd(struct se_cmd *cmd)
         atomic_inc(&cmd->t_fe_count);
         atomic_inc(&cmd->t_se_count);
 
-        atomic_set(&cmd->t_task_cdbs_left, 1);
         atomic_set(&cmd->t_task_cdbs_ex_left, 1);
 
         /*
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index 55a80bd50703..f176b8215302 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -549,7 +549,6 @@ struct se_cmd {
         unsigned long long      t_task_lba;
         atomic_t                t_fe_count;
         atomic_t                t_se_count;
-        atomic_t                t_task_cdbs_left;
         atomic_t                t_task_cdbs_ex_left;
         unsigned int            transport_state;
 #define CMD_T_ABORTED           (1 << 0)