alloc_workqueue() replaces deprecated create_workqueue().
A dedicated workqueue has been used since the workqueue kaluad_sync_wq
was created with the purpose of STPGs to be submitted synchronously. The
workitem (viz &pg->rtpg_work which maps to alua_rtpg_work) is involved
in normal device operation and requires forward progress under memory
pressure.
alloc_workqueue() parameters for kaluad_sync_wq are similar to kaluad_wq.
if (pg->flags & ALUA_SYNC_STPG) are set then kaluad_sync_wq is used
else kaluad_wq.
create_workqueue has been replaced with alloc_workqueue with max_active
as 0 since there is no need for throttling the number of active work
items.
Lastly, WQ_MEM_RECLAIM flag has been added to guarantee forward progress
in memory reclaim path.
Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@xxxxxxxxx>
---
drivers/scsi/device_handler/scsi_dh_alua.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c
index 752b5c9..193b28f 100644
--- a/drivers/scsi/device_handler/scsi_dh_alua.c
+++ b/drivers/scsi/device_handler/scsi_dh_alua.c
@@ -1152,7 +1152,7 @@ static int __init alua_init(void)
/* Temporary failure, bypass */
return SCSI_DH_DEV_TEMP_BUSY;
}
- kaluad_sync_wq = create_workqueue("kaluad_sync");
+ kaluad_sync_wq = alloc_workqueue("kaluad_sync", WQ_MEM_RECLAIM, 0);
if (!kaluad_sync_wq) {
destroy_workqueue(kaluad_wq);
return SCSI_DH_DEV_TEMP_BUSY;
--
2.1.4
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