From: Max Gurtovoy <maxg@mellanox.com>
Date: Mon, 13 Apr 2020 16:39:05 +0300
Subject: RDMA/rw: use DIV_ROUND_UP to calculate nr_ops
Patch-mainline: v5.8-rc1
Git-commit: 95a776e8a6282ac19051655c55124e711318ae6e
References: jsc#SLE-15176

Don't open-code DIV_ROUND_UP() kernel macro.

Link: https://lore.kernel.org/r/20200413133905.933343-1-leon@kernel.org
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/infiniband/core/rw.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/infiniband/core/rw.c
+++ b/drivers/infiniband/core/rw.c
@@ -129,7 +129,7 @@ static int rdma_rw_init_mr_wrs(struct rd
 						    qp->integrity_en);
 	int i, j, ret = 0, count = 0;
 
-	ctx->nr_ops = (sg_cnt + pages_per_mr - 1) / pages_per_mr;
+	ctx->nr_ops = DIV_ROUND_UP(sg_cnt, pages_per_mr);
 	ctx->reg = kcalloc(ctx->nr_ops, sizeof(*ctx->reg), GFP_KERNEL);
 	if (!ctx->reg) {
 		ret = -ENOMEM;