From 5940c8578fe720afbf4ef041bad0d72a101f1d88 Mon Sep 17 00:00:00 2001 From: Keith Busch Date: Tue, 4 Nov 2014 13:18:10 -0700 Subject: [PATCH] NVMe: Clear QUEUE_FLAG_STACKABLE The nvme namespace request_queue's flags are initialized to QUEUE_FLAG_DEFAULT, which currently sets QUEUE_FLAG_STACKABLE. The device-mapper indicates this flag means the block driver is requset based, though this driver is bio-based and problems will occur if an nvme namespace is used with a request based dm device. This patch clears the stackable flag. Signed-off-by: Keith Busch Signed-off-by: Matthew Wilcox Signed-off-by: Jens Axboe --- drivers/block/nvme-core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c index 0196fce0ddf5..8fffc68c74eb 100644 --- a/drivers/block/nvme-core.c +++ b/drivers/block/nvme-core.c @@ -2030,6 +2030,7 @@ static struct nvme_ns *nvme_alloc_ns(struct nvme_dev *dev, unsigned nsid, if (!ns->queue) goto out_free_ns; ns->queue->queue_flags = QUEUE_FLAG_DEFAULT; + queue_flag_clear_unlocked(QUEUE_FLAG_STACKABLE, ns->queue); queue_flag_set_unlocked(QUEUE_FLAG_NOMERGES, ns->queue); queue_flag_set_unlocked(QUEUE_FLAG_NONROT, ns->queue); queue_flag_clear_unlocked(QUEUE_FLAG_ADD_RANDOM, ns->queue); -- 2.34.1