megraraid sas is one high end HBA, and the IOPS may reach million level.
As discussed before, megaraid sas performance can be improved on SSD
when the device busy check is bypassed.
So set the flag of no_device_queue_for_ssd for megaraid sas.
Cc: Sathya Prakash <sathya.prakash@xxxxxxxxxxxx>
Cc: Chaitra P B <chaitra.basappa@xxxxxxxxxxxx>
Cc: Suganath Prabu Subramani <suganath-prabu.subramani@xxxxxxxxxxxx>
Cc: Kashyap Desai <kashyap.desai@xxxxxxxxxxxx>
Cc: Sumit Saxena <sumit.saxena@xxxxxxxxxxxx>
Cc: Shivasharan S <shivasharan.srikanteshwara@xxxxxxxxxxxx>
Cc: Ewan D. Milne <emilne@xxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>,
Cc: Hannes Reinecke <hare@xxxxxxx>
Cc: Bart Van Assche <bart.vanassche@xxxxxxx>
Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx>
---
drivers/scsi/megaraid/megaraid_sas_base.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index 43cbc749f66c..8f3770af7382 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -3424,6 +3424,7 @@ static struct scsi_host_template megasas_template = {
.bios_param = megasas_bios_param,
.change_queue_depth = scsi_change_queue_depth,
.max_segment_size = 0xffffffff,
+ .no_device_queue_for_ssd = 1,
};
/**
--
2.20.1
