From: Julia Lawall <Julia.Lawall@inria.fr>
Date: Sun, 20 Sep 2020 11:26:19 +0000 (+0200)
Subject: RDS: drop double zeroing
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=3cec0369905d086a56a7515f3449982403057599;p=linux.git

RDS: drop double zeroing

sg_init_table zeroes its first argument, so the allocation of that argument
doesn't have to.

the semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression x,n,flags;
@@

x =
- kcalloc
+ kmalloc_array
  (n,sizeof(*x),flags)
...
sg_init_table(x,n)
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/rds/rdma.c b/net/rds/rdma.c
index ccdd304eae0a0..1d0afb1dd77b5 100644
--- a/net/rds/rdma.c
+++ b/net/rds/rdma.c
@@ -269,7 +269,7 @@ static int __rds_rdma_map(struct rds_sock *rs, struct rds_get_mr_args *args,
 		goto out;
 	} else {
 		nents = ret;
-		sg = kcalloc(nents, sizeof(*sg), GFP_KERNEL);
+		sg = kmalloc_array(nents, sizeof(*sg), GFP_KERNEL);
 		if (!sg) {
 			ret = -ENOMEM;
 			goto out;