From mboxrd@z Thu Jan 1 00:00:00 1970 From: Johannes Thumshirn Subject: [PATCH] scsi: switch to scsi-mq by default Date: Wed, 4 Jul 2018 10:53:56 +0200 Message-ID: <20180704085356.10888-1-jthumshirn@suse.de> Return-path: Sender: linux-kernel-owner@vger.kernel.org To: "Martin K . Petersen" Cc: Hannes Reinecke , Bart Van Assche , Ming Lei , Linux SCSI Mailinglist , Linux Kernel Mailinglist , Johannes Thumshirn List-Id: linux-scsi@vger.kernel.org It has been more than one year since we tried to change the default from legacy to multi queue in SCSI with commit c279bd9e406 ("scsi: default to scsi-mq"). But due to issues with suspend/resume and performance problems it had been reverted again with commit cbe7dfa26eee ("Revert "scsi: default to scsi-mq""). In the meantime there have been a substantial amount of performance improvements and suspend/resume got fixed as well, thus we can re-enable scsi-mq without a significant performance penalty. Signed-off-by: Johannes Thumshirn Reviewed-by: Hannes Reinecke Reviewed-by: Ming Lei Acked-by: John Garry --- Changes since RFC: - Improve Changelog as Bart suggested - Collect Acks and Reviews --- 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 config SCSI_MQ_DEFAULT bool "SCSI: use blk-mq I/O path by default" + default y depends on SCSI ---help--- This option enables the new blk-mq based I/O path for SCSI -- 2.16.4