[PATCH 05/11] drbd_transport_rdma: dont break in dtr_tx_cq_event_handler if (cm->state != DSM_CONNECTED)

[Philipp Reisner]

Hello Dongsheng,

It appears that you are trying to fix a leak of cm structures. Is that correct?
Do you the reference on cm that is held because of the timer?
Please describe what the problem is, and how you are improving the situation.

In case this approach is the right solution, the patch should also change the
dtr_handle_tx_cq_event() function to type void.

best regards,
 Philipp

On Mon, Jun 24, 2024 at 8:22 AM zhengbing.huang
<zhengbing.huang at easystack.cn> wrote:
>
> From: Dongsheng Yang <dongsheng.yang at easystack.cn>
>
> We need to drain all tx in disconnect to put all kref for cm
>
> Signed-off-by: Dongsheng Yang <dongsheng.yang at easystack.cn>
> ---
>  drbd/drbd_transport_rdma.c | 3 ---
>  1 file changed, 3 deletions(-)
>
> diff --git a/drbd/drbd_transport_rdma.c b/drbd/drbd_transport_rdma.c
> index b7ccb15d4..9a6d15b78 100644
> --- a/drbd/drbd_transport_rdma.c
> +++ b/drbd/drbd_transport_rdma.c
> @@ -1956,9 +1956,6 @@ static void dtr_tx_cq_event_handler(struct ib_cq *cq, void *ctx)
>                         err = dtr_handle_tx_cq_event(cq, cm);
>                 } while (!err);
>
> -               if (cm->state != DSM_CONNECTED)
> -                       break;
> -
>                 rc = ib_req_notify_cq(cq, IB_CQ_NEXT_COMP | IB_CQ_REPORT_MISSED_EVENTS);
>                 if (unlikely(rc < 0)) {
>                         struct drbd_transport *transport = cm->path->path.transport;
> --
> 2.27.0
>