Re: [PATCHv2 for-next 1/5] RDMA/rtrs-srv: Set minimal max_send_wr and max_recv_wr

[Leon Romanovsky <leon@kernel.org>]

On Fri, Jun 11, 2021 at 02:10:30PM +0200, Jack Wang wrote:
> From: Jack Wang <jinpu.wang@cloud.ionos.com>
> 
> Currently rtrs when create_qp use a coarse numbers (bigger in general),
> which leads to hardware create more resources which only waste memory
> with no benefits.
> 
> For max_send_wr, we don't really need alway max_qp_wr size when creating
> qp, reduce it to cq_size.
> 
> For max_recv_wr,  cq_size is enough.
> 
> With the patch when sess_queue_depth=128, per session (2 paths)
> memory consumption reduced from 188 MB to 65MB
> 
> When always_invalidate is enabled, we need send more wr,
> so treat it special.
> 
> Fixes: 9cb837480424e ("RDMA/rtrs: server: main functionality")
> Signed-off-by: Jack Wang <jinpu.wang@cloud.ionos.com>
> Reviewed-by: Md Haris Iqbal <haris.iqbal@cloud.ionos.com>
> Signed-off-by: Gioh Kim <gi-oh.kim@ionos.com>
> ---
>  drivers/infiniband/ulp/rtrs/rtrs-srv.c | 38 +++++++++++++++++---------
>  1 file changed, 25 insertions(+), 13 deletions(-)
> 

Thanks,
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>