nvmet: reset keep alive timer in controller enable

[ Upstream commit d68a90e148f5a82aa67654c5012071e31c0e4baa ]

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>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c
index 64b40a12abcf8cf36b00e443f760b5f01653c013..f12753eb32160521b49a4e15b9e6bcef2af18c94 100644 (file)
--- a/drivers/nvme/target/core.c
+++ b/drivers/nvme/target/core.c
@@ -578,6 +578,14 @@ 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)