From: Chuck Lever <chuck.lever@oracle.com>
Date: Wed, 28 Feb 2018 15:30:49 -0500
Subject: xprtrdma: Reduce number of MRs created by rpcrdma_mrs_create
Patch-mainline: v4.17-rc1
Git-commit: ae741a855170fa97adabce7e48bdf9de71186a5f
References: bsc#1103992 FATE#326009

Create fewer MRs on average. Many workloads don't need as many as
32 MRs, and the transport can now quickly restock the MR free list.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 net/sunrpc/xprtrdma/verbs.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -1023,7 +1023,7 @@ rpcrdma_mrs_create(struct rpcrdma_xprt *
 	LIST_HEAD(free);
 	LIST_HEAD(all);
 
-	for (count = 0; count < 32; count++) {
+	for (count = 0; count < 3; count++) {
 		struct rpcrdma_mr *mr;
 		int rc;