Commit ebddd2a1 authored by Damien Le Moal's avatar Damien Le Moal Committed by Jens Axboe
Browse files

sd: Set ELEVATOR_F_ZBD_SEQ_WRITE for ZBC disks 



Using the helper blk_queue_required_elevator_features(), set the
elevator feature ELEVATOR_F_ZBD_SEQ_WRITE as required for the request
queue of SCSI ZBC disks.

This feature requirement can always be satisfied as the mq-deadline
elevator is always selected for in-kernel compilation when
CONFIG_BLK_DEV_ZONED (zoned block device support) is enabled.

Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarJohannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: default avatarMing Lei <ming.lei@redhat.com>
Signed-off-by: default avatarDamien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 780d97a9

drivers/scsi/sd_zbc.c

+2 −0
Original line number Diff line number Diff line
@@ -493,6 +493,8 @@ int sd_zbc_read_zones(struct scsi_disk *sdkp, unsigned char *buf) 
	blk_queue_chunk_sectors(sdkp->disk->queue,

			logical_to_sectors(sdkp->device, zone_blocks));

	blk_queue_flag_set(QUEUE_FLAG_ZONE_RESETALL, sdkp->disk->queue);

	blk_queue_required_elevator_features(sdkp->disk->queue,

					     ELEVATOR_F_ZBD_SEQ_WRITE);

	nr_zones = round_up(sdkp->capacity, zone_blocks) >> ilog2(zone_blocks);



	/* READ16/WRITE16 is mandatory for ZBC disks */