From: Chuck Lever <chuck.lever@oracle.com>
Date: Mon, 7 May 2018 15:27:27 -0400
Subject: svcrdma: Remove sc_rq_depth
Patch-mainline: v4.18-rc1
Git-commit: 2c577bfea85e421bfa91df16ccf5156361aa8d4b
References: bsc#1103992 FATE#326009
Clean up: No need to retain rq_depth in struct svcrdma_xprt, it is
used only in svc_rdma_accept().
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
include/linux/sunrpc/svc_rdma.h | 1 -
net/sunrpc/xprtrdma/svc_rdma_transport.c | 17 ++++++++---------
2 files changed, 8 insertions(+), 10 deletions(-)
--- a/include/linux/sunrpc/svc_rdma.h
+++ b/include/linux/sunrpc/svc_rdma.h
@@ -101,7 +101,6 @@ struct svcxprt_rdma {
atomic_t sc_sq_avail; /* SQEs ready to be consumed */
unsigned int sc_sq_depth; /* Depth of SQ */
- unsigned int sc_rq_depth; /* Depth of RQ */
__be32 sc_fc_credits; /* Forward credits */
u32 sc_max_requests; /* Max requests */
u32 sc_max_bc_requests;/* Backward credits */
--- a/net/sunrpc/xprtrdma/svc_rdma_transport.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c
@@ -587,9 +587,9 @@ static struct svc_xprt *svc_rdma_accept(
struct rdma_conn_param conn_param;
struct rpcrdma_connect_private pmsg;
struct ib_qp_init_attr qp_attr;
+ unsigned int ctxts, rq_depth;
struct ib_device *dev;
struct sockaddr *sap;
- unsigned int ctxts;
int ret = 0;
listen_rdma = container_of(xprt, struct svcxprt_rdma, sc_xprt);
@@ -620,19 +620,18 @@ static struct svc_xprt *svc_rdma_accept(
newxprt->sc_max_req_size = svcrdma_max_req_size;
newxprt->sc_max_requests = svcrdma_max_requests;
newxprt->sc_max_bc_requests = svcrdma_max_bc_requests;
- newxprt->sc_rq_depth = newxprt->sc_max_requests +
- newxprt->sc_max_bc_requests;
- if (newxprt->sc_rq_depth > dev->attrs.max_qp_wr) {
+ rq_depth = newxprt->sc_max_requests + newxprt->sc_max_bc_requests;
+ if (rq_depth > dev->attrs.max_qp_wr) {
pr_warn("svcrdma: reducing receive depth to %d\n",
dev->attrs.max_qp_wr);
- newxprt->sc_rq_depth = dev->attrs.max_qp_wr;
- newxprt->sc_max_requests = newxprt->sc_rq_depth - 2;
+ rq_depth = dev->attrs.max_qp_wr;
+ newxprt->sc_max_requests = rq_depth - 2;
newxprt->sc_max_bc_requests = 2;
}
newxprt->sc_fc_credits = cpu_to_be32(newxprt->sc_max_requests);
ctxts = rdma_rw_mr_factor(dev, newxprt->sc_port_num, RPCSVC_MAXPAGES);
ctxts *= newxprt->sc_max_requests;
- newxprt->sc_sq_depth = newxprt->sc_rq_depth + ctxts;
+ newxprt->sc_sq_depth = rq_depth + ctxts;
if (newxprt->sc_sq_depth > dev->attrs.max_qp_wr) {
pr_warn("svcrdma: reducing send depth to %d\n",
dev->attrs.max_qp_wr);
@@ -654,7 +653,7 @@ static struct svc_xprt *svc_rdma_accept(
dprintk("svcrdma: error creating SQ CQ for connect request\n");
goto errout;
}
- newxprt->sc_rq_cq = ib_alloc_cq(dev, newxprt, newxprt->sc_rq_depth,
+ newxprt->sc_rq_cq = ib_alloc_cq(dev, newxprt, rq_depth,
0, IB_POLL_WORKQUEUE);
if (IS_ERR(newxprt->sc_rq_cq)) {
dprintk("svcrdma: error creating RQ CQ for connect request\n");
@@ -667,7 +666,7 @@ static struct svc_xprt *svc_rdma_accept(
qp_attr.port_num = newxprt->sc_port_num;
qp_attr.cap.max_rdma_ctxs = ctxts;
qp_attr.cap.max_send_wr = newxprt->sc_sq_depth - ctxts;
- qp_attr.cap.max_recv_wr = newxprt->sc_rq_depth;
+ qp_attr.cap.max_recv_wr = rq_depth;
qp_attr.cap.max_send_sge = newxprt->sc_max_sge;
qp_attr.cap.max_recv_sge = newxprt->sc_max_sge;
qp_attr.sq_sig_type = IB_SIGNAL_REQ_WR;