[PATCH v3 14/22] xprtrdma: Move recv_wr to struct rpcrdma_rep
From: Chuck Lever <hidden>
Date: 2016-09-15 14:56:51
Also in:
linux-nfs
Subsystem:
kernel nfsd, sunrpc, and lockd servers, networking [general], nfs, sunrpc, and lockd clients, the rest · Maintainers:
Chuck Lever, Jeff Layton, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Trond Myklebust, Anna Schumaker, Linus Torvalds
Clean up: The fields in the recv_wr do not vary. There is no need to initialize them before each ib_post_recv(). This removes a large-ish data structure from the stack. Signed-off-by: Chuck Lever <redacted> --- net/sunrpc/xprtrdma/verbs.c | 13 ++++++------- net/sunrpc/xprtrdma/xprt_rdma.h | 1 + 2 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index 79a6346..a49c788 100644
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c@@ -880,6 +880,10 @@ rpcrdma_create_rep(struct rpcrdma_xprt *r_xprt) rep->rr_cqe.done = rpcrdma_receive_wc; rep->rr_rxprt = r_xprt; INIT_WORK(&rep->rr_work, rpcrdma_receive_worker); + rep->rr_recv_wr.next = NULL; + rep->rr_recv_wr.wr_cqe = &rep->rr_cqe; + rep->rr_recv_wr.sg_list = &rep->rr_rdmabuf->rg_iov; + rep->rr_recv_wr.num_sge = 1; return rep; out_free:
@@ -1302,17 +1306,12 @@ int rpcrdma_ep_post_recv(struct rpcrdma_ia *ia, struct rpcrdma_rep *rep) { - struct ib_recv_wr recv_wr, *recv_wr_fail; + struct ib_recv_wr *recv_wr_fail; int rc; - recv_wr.next = NULL; - recv_wr.wr_cqe = &rep->rr_cqe; - recv_wr.sg_list = &rep->rr_rdmabuf->rg_iov; - recv_wr.num_sge = 1; - if (!rpcrdma_dma_map_regbuf(ia, rep->rr_rdmabuf)) goto out_map; - rc = ib_post_recv(ia->ri_id->qp, &recv_wr, &recv_wr_fail); + rc = ib_post_recv(ia->ri_id->qp, &rep->rr_recv_wr, &recv_wr_fail); if (rc) goto out_postrecv; return 0;
diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h
index 3c5a89a..9aabca6 100644
--- a/net/sunrpc/xprtrdma/xprt_rdma.h
+++ b/net/sunrpc/xprtrdma/xprt_rdma.h@@ -189,6 +189,7 @@ struct rpcrdma_rep { struct rpcrdma_xprt *rr_rxprt; struct work_struct rr_work; struct list_head rr_list; + struct ib_recv_wr rr_recv_wr; struct rpcrdma_regbuf *rr_rdmabuf; }; --
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