nvmet: reset keep alive timer in controller enable

Controllers that are not yet enabled should not really enforce keep alive
timeouts, but we still want to track a timeout and cleanup in case a host
died before it enabled the controller.  Hence, simply reset the keep
alive timer when the controller is enabled.

Suggested-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c
index a03da764ecae..74d4b785d2da 100644
--- a/drivers/nvme/target/core.c
+++ b/drivers/nvme/target/core.c
@@ -686,6 +686,14 @@ static void nvmet_start_ctrl(struct nvmet_ctrl *ctrl)
         }
 
         ctrl->csts = NVME_CSTS_RDY;
+
+        /*
+         * Controllers that are not yet enabled should not really enforce the
+         * keep alive timeout, but we still want to track a timeout and cleanup
+         * in case a host died before it enabled the controller.  Hence, simply
+         * reset the keep alive timer when the controller is enabled.
+         */
+        mod_delayed_work(system_wq, &ctrl->ka_work, ctrl->kato * HZ);
 }
 
 static void nvmet_clear_ctrl(struct nvmet_ctrl *ctrl)