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scsi: ibmvscsi_tgt: Remove target_wait_for_sess_cmd()

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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 712db3eb2c ("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@catalogicsoftware.com>
Reviewed-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Bryant G. Ly 2018-10-16 17:34:26 +00:00 committed by Martin K. Petersen
parent f4bb770469
commit a1ad38a61e
1 changed files with 0 additions and 1 deletions
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drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c
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@ -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);