This is a note to let you know that I've just added the patch titled
nvmet: Disable keep-alive timer when kato is cleared to 0h
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
nvmet-disable-keep-alive-timer-when-kato-is-cleared-.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 199a2e1bda785b844b5f17b5f2d4bfb81d1a9c3b
Author: Amit Engel <amit.engel@xxxxxxxx>
Date: Wed Aug 19 11:31:11 2020 +0300
nvmet: Disable keep-alive timer when kato is cleared to 0h
[ Upstream commit 0d3b6a8d213a30387b5104b2fb25376d18636f23 ]
Based on nvme spec, when keep alive timeout is set to zero
the keep-alive timer should be disabled.
Signed-off-by: Amit Engel <amit.engel@xxxxxxxx>
Signed-off-by: Sagi Grimberg <sagi@xxxxxxxxxxx>
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c
index 96ea6c76be6e5..63b87a8472762 100644
--- a/drivers/nvme/target/core.c
+++ b/drivers/nvme/target/core.c
@@ -205,6 +205,9 @@ static void nvmet_keep_alive_timer(struct work_struct *work)
static void nvmet_start_keep_alive_timer(struct nvmet_ctrl *ctrl)
{
+ if (unlikely(ctrl->kato == 0))
+ return;
+
pr_debug("ctrl %d start keep-alive timer for %d secs\n",
ctrl->cntlid, ctrl->kato);
@@ -214,6 +217,9 @@ static void nvmet_start_keep_alive_timer(struct nvmet_ctrl *ctrl)
static void nvmet_stop_keep_alive_timer(struct nvmet_ctrl *ctrl)
{
+ if (unlikely(ctrl->kato == 0))
+ return;
+
pr_debug("ctrl %d stop keep-alive\n", ctrl->cntlid);
cancel_delayed_work_sync(&ctrl->ka_work);
