From b9aef63aca772a25ffcfaedf4bd29fb36b919a93 Mon Sep 17 00:00:00 2001 From: Damien Le Moal Date: Tue, 4 Jun 2019 16:23:40 +0900 Subject: [PATCH] block: force select mq-deadline for zoned block devices In most use cases of zoned block devices (aka SMR disks), the mq-deadline scheduler is mandatory as it implements sequential write command processing guarantees with zone write locking. So make sure that this scheduler is always enabled if CONFIG_BLK_DEV_ZONED is selected. Tested-by: Chaitanya Kulkarni Reviewed-by: Chaitanya Kulkarni Signed-off-by: Damien Le Moal Reviewed-by: Ming Lei Signed-off-by: Jens Axboe --- block/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/block/Kconfig b/block/Kconfig index 1b220101a9cb6..2466dcc3ef1dc 100644 --- a/block/Kconfig +++ b/block/Kconfig @@ -73,6 +73,7 @@ config BLK_DEV_INTEGRITY config BLK_DEV_ZONED bool "Zoned block device support" + select MQ_IOSCHED_DEADLINE ---help--- Block layer zoned block device support. This option enables support for ZAC/ZBC host-managed and host-aware zoned block devices. -- 2.39.2