| Message ID | 20190828022947.23364-7-damien.lemoal@wdc.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Elevator cleanups and improvements | expand |
On Wed, Aug 28, 2019 at 11:29:46AM +0900, Damien Le Moal wrote: > 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. > > Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Looks good, Reviewed-by: Christoph Hellwig <hch@lst.de>
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;
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. Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> --- drivers/block/null_blk_main.c | 2 ++ 1 file changed, 2 insertions(+)