[RFC] scsi: switch to scsi-mq by default

From: Johannes Thumshirn
Date: Tue Jul 03 2018 - 02:54:41 EST

It has been more than one year since we tried to change the default
from legacy to multi queue in SCSI. Back then we had to retract the
change because of performance issues with rotating disks.

In the meantime there have been a substantial amount of performance
improvements, thus we can re-enable scsi-mq without a significant
performance penalty.

Signed-off-by: Johannes Thumshirn <jthumshirn@xxxxxxx>
drivers/scsi/Kconfig | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index 35c909bbf8ba..bd115bab162e 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -49,6 +49,7 @@ config SCSI_NETLINK

bool "SCSI: use blk-mq I/O path by default"
+ default y
depends on SCSI
This option enables the new blk-mq based I/O path for SCSI