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block: force select mq-deadline for zoned block devices

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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 <[email protected]>
Reviewed-by: Chaitanya Kulkarni <[email protected]>
Signed-off-by: Damien Le Moal <[email protected]>
Reviewed-by: Ming Lei <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Damien Le Moal authored and Jens Axboe committed 2019-06-13 03:00:31 -06:00
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commit b9aef63aca
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@@ -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.