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[v5,12/22] target: Simplify LUN RESET implementation

Message ID 20170210012852.15735-13-bart.vanassche@sandisk.com (mailing list archive)
State Superseded
Headers show

Commit Message

Bart Van Assche Feb. 10, 2017, 1:28 a.m. UTC 
Due to the task management handling rework it is safe to wait for
a TMF that is not in the active state. Hence remove the CMD_T_ACTIVE
test from core_tmr_drain_tmr_list(). Additionally, call
__target_check_io_state() instead of open coding it.

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Andy Grover <agrover@redhat.com>
Cc: David Disseldorp <ddiss@suse.de>
---
 drivers/target/target_core_tmr.c | 14 ++------------
 1 file changed, 2 insertions(+), 12 deletions(-)
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Patch

diff --git a/drivers/target/target_core_tmr.c b/drivers/target/target_core_tmr.c
index 75ef294106c3..c8f231d0664a 100644
--- a/drivers/target/target_core_tmr.c
+++ b/drivers/target/target_core_tmr.c
@@ -221,23 +221,13 @@  static void core_tmr_drain_tmr_list(
 			continue;
 
 		spin_lock(&sess->sess_cmd_lock);
-		spin_lock(&cmd->t_state_lock);
-		if (!(cmd->transport_state & CMD_T_ACTIVE) ||
-		     (cmd->transport_state & CMD_T_FABRIC_STOP)) {
-			spin_unlock(&cmd->t_state_lock);
-			spin_unlock(&sess->sess_cmd_lock);
-			continue;
-		}
-		cmd->transport_state |= CMD_T_ABORTED;
-		spin_unlock(&cmd->t_state_lock);
+		rc = __target_check_io_state(cmd, sess, 0);
+		spin_unlock(&sess->sess_cmd_lock);
 
-		rc = kref_get_unless_zero(&cmd->cmd_kref);
 		if (!rc) {
 			printk("LUN_RESET TMR: non-zero kref_get_unless_zero\n");
-			spin_unlock(&sess->sess_cmd_lock);
 			continue;
 		}
-		spin_unlock(&sess->sess_cmd_lock);
 
 		list_move_tail(&tmr_p->tmr_list, &drain_tmr_list);
 	}