[PATCH 4.14 062/217] nvmet: reset keep alive timer in controller enable

Greg Kroah-Hartman
2018-08-23T09:12:43Z

From: Max Gurtuvoy <maxg@mellanox.com>

[ 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>
---
drivers/nvme/target/core.c | 8 ++++++++
1 file changed, 8 insertions(+)

--- a/drivers/nvme/target/core.c
+++ b/drivers/nvme/target/core.c
@@ -598,6 +598,14 @@ static void nvmet_start_ctrl(struct nvme
}

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)