From: "Bryant G. Ly" <bly@xxxxxxxxxxxxxxxxxxxxx>
There is currently a bug with the driver where there is never a
call to target_sess_cmd_list_set_waiting(), it only called
target_wait_for_sess_cmd(), which basically means that the
sess_wait_list would always be empty.
Thus, list_empty(&sess->sess_wait_list) = true,
(eg: no se_cmd I/O is quiesced, because no se_cmd in sess_wait_list),
since commit 712db3eb2c35 ("scsi: ibmvscsis: Properly deregister
target sessions") in 4.9.y code.
ibmvscsi_tgt does not remove the I_T Nexus when a VM is
active so we can fix this issue by removing the call to
target_wait_for_sess_cmd() altogether.
Signed-off-by: Bryant G. Ly <bly@xxxxxxxxxxxxxxxxxxxxx>
---
drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c b/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c
index fac3773..2175e9e 100644
--- a/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c
+++ b/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c
@@ -2266,7 +2266,6 @@ static int ibmvscsis_drop_nexus(struct ibmvscsis_tport *tport)
/*
* Release the SCSI I_T Nexus to the emulated ibmvscsis Target Port
*/
- target_wait_for_sess_cmds(se_sess);
target_remove_session(se_sess);
tport->ibmv_nexus = NULL;
kfree(nexus);
--
1.8.3.1
