NVMe: Fix check_flush_dependency warning

If the controller fails and is degraded after a reset, we need to kill
off all requests queues before removing the inaccessble namespaces. This
will prevent del_gendisk from syncing dirty data, which we can't due
from a WQ_MEM_RECLAIM work queue.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
(cherry picked from commit 3b24774e1fb90a40836e96e39a851a774679efff)

Orabug: 25130845

Signed-off-by: Ashok Vairavan <ashok.vairavan@oracle.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 3eabde0b03fa93b778177ef5c058dfaa26919cb6..f8d9b00c6dd7a7905c90e6f44311e5aec0d11182 100644 (file)
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -1934,6 +1934,7 @@ static void nvme_reset_work(struct work_struct *work)
         */
        if (dev->online_queues < 2) {
                dev_warn(dev->ctrl.device, "IO queues not created\n");
+               nvme_kill_queues(&dev->ctrl);
                nvme_remove_namespaces(&dev->ctrl);
        } else {
                nvme_start_queues(&dev->ctrl);