Re: [PATCH 13/26] null_blk: Do not request ELEVATOR_F_ZBD_SEQ_WRITE elevator feature

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]


On 2/2/24 15:30, Damien Le Moal wrote:
With zone write plugging enabled at the block layer level, any zone
device can only ever see at most a single write operation per zone.
There is thus no need to request a block scheduler with strick per-zone
sequential write ordering control through the ELEVATOR_F_ZBD_SEQ_WRITE
feature. Removing this allows using a zoned null_blk device with any
scheduler, including "none".

Signed-off-by: Damien Le Moal <dlemoal@xxxxxxxxxx>
  drivers/block/null_blk/zoned.c | 1 -
  1 file changed, 1 deletion(-)

diff --git a/drivers/block/null_blk/zoned.c b/drivers/block/null_blk/zoned.c
index 6f5e0994862e..f2cb6da0dd0d 100644
--- a/drivers/block/null_blk/zoned.c
+++ b/drivers/block/null_blk/zoned.c
@@ -161,7 +161,6 @@ int null_register_zoned_dev(struct nullb *nullb)
  	blk_queue_flag_set(QUEUE_FLAG_ZONE_RESETALL, q);
-	blk_queue_required_elevator_features(q, ELEVATOR_F_ZBD_SEQ_WRITE);
  	blk_queue_chunk_sectors(q, dev->zone_size_sects);
  	nullb->disk->nr_zones = bdev_nr_zones(nullb->disk->part0);
  	blk_queue_max_zone_append_sectors(q, dev->zone_size_sects);
Reviewed-by: Hannes Reinecke <hare@xxxxxxx>


Dr. Hannes Reinecke                Kernel Storage Architect
hare@xxxxxxx                              +49 911 74053 688
SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg
HRB 36809 (AG Nürnberg), GF: Ivo Totev, Andrew McDonald,
Werner Knoblich

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [SCSI Target Devel]     [Linux SCSI Target Infrastructure]     [Kernel Newbies]     [IDE]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux ATA RAID]     [Linux IIO]     [Samba]     [Device Mapper]

  Powered by Linux