On 2019/06/04 16:23, Damien Le Moal wrote: > 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. > > Signed-off-by: Damien Le Moal <[email protected]> > --- > block/Kconfig | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/block/Kconfig b/block/Kconfig > index 1b220101a9cb..2466dcc3ef1d 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. >
Ping... Any comment on this one ? -- Damien Le Moal Western Digital Research
