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[resend,for-next,3/5] RDMA/rtrs_clt: Alloc less memory with write path fast memory registration

Message ID 20210621055340.11789-4-jinpu.wang@ionos.com (mailing list archive)
State Accepted
Delegated to: Jason Gunthorpe
Headers show
Series RTRS enable write path fast memory regitration | expand

Commit Message

Jinpu Wang June 21, 2021, 5:53 a.m. UTC 
From: Jack Wang <jinpu.wang@cloud.ionos.com>

With write path fast memory registration, we need less memory for
each request.

With fast memory registration, we can reduce max_send_sge to save
memory usage.

Also convert the kmalloc_array to kcalloc.

Signed-off-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Reviewed-by: Md Haris Iqbal <haris.iqbal@cloud.ionos.com>
---
 drivers/infiniband/ulp/rtrs/rtrs-clt.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/infiniband/ulp/rtrs/rtrs-clt.c b/drivers/infiniband/ulp/rtrs/rtrs-clt.c
index 87edcec3e9e3..3b25a375afc3 100644
--- a/drivers/infiniband/ulp/rtrs/rtrs-clt.c
+++ b/drivers/infiniband/ulp/rtrs/rtrs-clt.c
@@ -1372,8 +1372,7 @@  static int alloc_sess_reqs(struct rtrs_clt_sess *sess)
 		if (!req->iu)
 			goto out;
 
-		req->sge = kmalloc_array(clt->max_segments + 1,
-					 sizeof(*req->sge), GFP_KERNEL);
+		req->sge = kcalloc(2, sizeof(*req->sge), GFP_KERNEL);
 		if (!req->sge)
 			goto out;
 
@@ -1675,7 +1674,7 @@  static int create_con_cq_qp(struct rtrs_clt_con *con)
 			      sess->queue_depth * 3 + 1);
 		max_recv_wr = min_t(int, wr_limit,
 			      sess->queue_depth * 3 + 1);
-		max_send_sge = sess->clt->max_segments + 1;
+		max_send_sge = 2;
 	}
 	cq_num = max_send_wr + max_recv_wr;
 	/* alloc iu to recv new rkey reply when server reports flags set */