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authorDamien Le Moal <damien.lemoal@wdc.com>2019-09-05 12:51:34 +0300
committerJens Axboe <axboe@kernel.dk>2019-09-06 04:52:34 +0300
commit780d97a990cca6d3b668526fd97053f41be34c05 (patch)
treee961906a55b7df76cb01a574816c6ef53365df89 /drivers/block/null_blk_main.c
parent737eb78e82d52d35df166d29af32bf61992de71d (diff)
downloadlinux-780d97a990cca6d3b668526fd97053f41be34c05.tar.xz
block: Set ELEVATOR_F_ZBD_SEQ_WRITE for nullblk zoned 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 null_blk devices created with zoned mode enabled. 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: Christoph Hellwig <hch@lst.de> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block/null_blk_main.c')
-rw-r--r--drivers/block/null_blk_main.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/block/null_blk_main.c b/drivers/block/null_blk_main.c
index b26a178d064d..b29b273690b0 100644
--- a/drivers/block/null_blk_main.c
+++ b/drivers/block/null_blk_main.c
@@ -1695,6 +1695,8 @@ static int null_add_dev(struct nullb_device *dev)
blk_queue_chunk_sectors(nullb->q, dev->zone_size_sects);
nullb->q->limits.zoned = BLK_ZONED_HM;
blk_queue_flag_set(QUEUE_FLAG_ZONE_RESETALL, nullb->q);
+ blk_queue_required_elevator_features(nullb->q,
+ ELEVATOR_F_ZBD_SEQ_WRITE);
}
nullb->q->queuedata = nullb;