[PATCH AUTOSEL 5.8 11/42] nvme: skip noiob for zoned devices

[Sasha Levin]

From: Keith Busch <kbusch at kernel.org>

[ Upstream commit c41ad98bebb8f4f0335b3c50dbb7583a6149dce4 ]

Zoned block devices reuse the chunk_sectors queue limit to define zone
boundaries. If a such a device happens to also report an optimal
boundary, do not use that to define the chunk_sectors as that may
intermittently interfere with io splitting and zone size queries.

Signed-off-by: Keith Busch <kbusch at kernel.org>
Signed-off-by: Sagi Grimberg <sagi at grimberg.me>
Signed-off-by: Jens Axboe <axboe at kernel.dk>
Signed-off-by: Sasha Levin <sashal at kernel.org>
---
 drivers/nvme/host/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index f38548e6d55ec..6ea0bab621df3 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1975,7 +1975,7 @@ static int __nvme_revalidate_disk(struct gendisk *disk, struct nvme_id_ns *id)
 		}
 	}
 
-	if (iob)
+	if (iob && !blk_queue_is_zoned(ns->queue))
 		blk_queue_chunk_sectors(ns->queue, rounddown_pow_of_two(iob));
 	nvme_update_disk_info(disk, ns, id);
 #ifdef CONFIG_NVME_MULTIPATH
-- 
2.25.1