From: Christoph Hellwig <hch@xxxxxx>
Push session reinstatement out of transport_generic_free_cmd into the only
caller that actually needs it. Clean up transport_generic_free_cmd a bit,
and remove the useless comment. I'd love to add a more useful kerneldoc
comment for it, but as this point I'm still a bit confused in where it
stands in the command release stack.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
---
drivers/target/iscsi/iscsi_target.c | 2 +-
drivers/target/loopback/tcm_loop.c | 4 +-
drivers/target/target_core_transport.c | 37 +++++++++++--------------------
drivers/target/tcm_fc/tfc_cmd.c | 12 +++++-----
include/target/target_core_transport.h | 2 +-
5 files changed, 23 insertions(+), 34 deletions(-)
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index 6a4ea29..7dc2cfe 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -3547,7 +3547,7 @@ get_immediate:
iscsit_release_cmd(cmd);
else
transport_generic_free_cmd(&cmd->se_cmd,
- 1, 0);
+ 1);
goto get_immediate;
case ISTATE_SEND_NOPIN_WANT_RESPONSE:
spin_unlock_bh(&cmd->istate_lock);
diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c
index aa2d679..f0e701d 100644
--- a/drivers/target/loopback/tcm_loop.c
+++ b/drivers/target/loopback/tcm_loop.c
@@ -200,7 +200,7 @@ 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, 0);
+ transport_generic_free_cmd(se_cmd, 0);
}
static void tcm_loop_release_cmd(struct se_cmd *se_cmd)
@@ -388,7 +388,7 @@ static int tcm_loop_device_reset(struct scsi_cmnd *sc)
SUCCESS : FAILED;
release:
if (se_cmd)
- transport_generic_free_cmd(se_cmd, 1, 0);
+ transport_generic_free_cmd(se_cmd, 1);
else
kmem_cache_free(tcm_loop_cmd_cache, tl_cmd);
kfree(tl_tmr);
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 4f21b88..db2f898 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -4331,42 +4331,25 @@ void transport_release_cmd(struct se_cmd *cmd)
}
EXPORT_SYMBOL(transport_release_cmd);
-/* transport_generic_free_cmd():
- *
- * Called from processing frontend to release storage engine resources
- */
-void transport_generic_free_cmd(
- struct se_cmd *cmd,
- int wait_for_tasks,
- int session_reinstatement)
+bool transport_generic_free_cmd(struct se_cmd *cmd, int wait_for_tasks)
{
if (!(cmd->se_cmd_flags & SCF_SE_LUN_CMD))
transport_release_cmd(cmd);
else {
core_dec_lacl_count(cmd->se_sess->se_node_acl, cmd);
- if (cmd->se_lun) {
-#if 0
- pr_debug("cmd: %p ITT: 0x%08x contains"
- " cmd->se_lun\n", cmd,
- cmd->se_tfo->get_task_tag(cmd));
-#endif
+ if (cmd->se_lun)
transport_lun_remove_cmd(cmd);
- }
if (wait_for_tasks && cmd->transport_wait_for_tasks)
cmd->transport_wait_for_tasks(cmd, 0, 0);
transport_free_dev_tasks(cmd);
- if (!transport_put_cmd(cmd) && session_reinstatement) {
- unsigned long flags;
-
- spin_lock_irqsave(&cmd->t_state_lock, flags);
- transport_all_task_dev_remove_state(cmd);
- spin_unlock_irqrestore(&cmd->t_state_lock, flags);
- }
+ return transport_put_cmd(cmd);
}
+
+ return true;
}
EXPORT_SYMBOL(transport_generic_free_cmd);
@@ -4631,7 +4614,13 @@ remove:
if (!remove_cmd)
return;
- transport_generic_free_cmd(cmd, 0, session_reinstatement);
+ if (!transport_generic_free_cmd(cmd, 0) && session_reinstatement) {
+ unsigned long flags;
+
+ spin_lock_irqsave(&cmd->t_state_lock, flags);
+ transport_all_task_dev_remove_state(cmd);
+ spin_unlock_irqrestore(&cmd->t_state_lock, flags);
+ }
}
static int transport_get_sense_codes(
@@ -5181,7 +5170,7 @@ get_cmd:
transport_put_cmd(cmd);
break;
case TRANSPORT_FREE_CMD_INTR:
- transport_generic_free_cmd(cmd, 0, 0);
+ transport_generic_free_cmd(cmd, 0);
break;
case TRANSPORT_PROCESS_TMR:
transport_generic_do_tmr(cmd);
diff --git a/drivers/target/tcm_fc/tfc_cmd.c b/drivers/target/tcm_fc/tfc_cmd.c
index c2d148d..7f2ee5a 100644
--- a/drivers/target/tcm_fc/tfc_cmd.c
+++ b/drivers/target/tcm_fc/tfc_cmd.c
@@ -114,7 +114,7 @@ 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, 0);
+ transport_generic_free_cmd(se_cmd, 0);
}
/*
@@ -269,7 +269,7 @@ 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, 0);
+ transport_generic_free_cmd(&cmd->se_cmd, 0);
return;
}
@@ -287,7 +287,7 @@ static void ft_recv_seq(struct fc_seq *sp, struct fc_frame *fp, void *arg)
__func__, fh->fh_r_ctl);
ft_invl_hw_context(cmd);
fc_frame_free(fp);
- transport_generic_free_cmd(&cmd->se_cmd, 0, 0);
+ transport_generic_free_cmd(&cmd->se_cmd, 0);
break;
}
}
@@ -420,7 +420,7 @@ 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, 0);
+ transport_generic_free_cmd(&cmd->se_cmd, 0);
ft_sess_put(sess);
return;
}
@@ -627,7 +627,7 @@ static void ft_send_work(struct work_struct *work)
if (ret == -ENOMEM) {
transport_send_check_condition_and_sense(se_cmd,
TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE, 0);
- transport_generic_free_cmd(se_cmd, 0, 0);
+ transport_generic_free_cmd(se_cmd, 0);
return;
}
if (ret == -EINVAL) {
@@ -636,7 +636,7 @@ static void ft_send_work(struct work_struct *work)
else
transport_send_check_condition_and_sense(se_cmd,
se_cmd->scsi_sense_reason, 0);
- transport_generic_free_cmd(se_cmd, 0, 0);
+ transport_generic_free_cmd(se_cmd, 0);
return;
}
transport_handle_cdb_direct(se_cmd);
diff --git a/include/target/target_core_transport.h b/include/target/target_core_transport.h
index 99a671e..a113129 100644
--- a/include/target/target_core_transport.h
+++ b/include/target/target_core_transport.h
@@ -184,7 +184,7 @@ 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(struct se_cmd *);
-extern void transport_generic_free_cmd(struct se_cmd *, int, int);
+extern bool transport_generic_free_cmd(struct se_cmd *, 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 *,
--
1.5.6.5
--
To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
