linux-kernel - [PATCH -next] sunrpc: use kmemdup_nul() in gssp

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Message-ID: <20200508124000.170708-1-chenzhou10@huawei.com>
Date:   Fri, 8 May 2020 20:40:00 +0800
From:   Chen Zhou <chenzhou10@...wei.com>
To:     <trond.myklebust@...merspace.com>, <anna.schumaker@...app.com>,
        <bfields@...ldses.org>, <chuck.lever@...cle.com>,
        <davem@...emloft.net>, <kuba@...nel.org>
CC:     <linux-nfs@...r.kernel.org>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <chenzhou10@...wei.com>
Subject: [PATCH -next] sunrpc: use kmemdup_nul() in gssp_stringify()

It is more efficient to use kmemdup_nul() if the size is known exactly
.

According to doc:
"Note: Use kmemdup_nul() instead if the size is known exactly."

Signed-off-by: Chen Zhou <chenzhou10@...wei.com>
---
 net/sunrpc/auth_gss/gss_rpc_upcall.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/sunrpc/auth_gss/gss_rpc_upcall.c b/net/sunrpc/auth_gss/gss_rpc_upcall.c
index 0349f455a862..af9c7f43859c 100644
--- a/net/sunrpc/auth_gss/gss_rpc_upcall.c
+++ b/net/sunrpc/auth_gss/gss_rpc_upcall.c
@@ -223,7 +223,7 @@ static int gssp_alloc_receive_pages(struct gssx_arg_accept_sec_context *arg)
 
 static char *gssp_stringify(struct xdr_netobj *netobj)
 {
-	return kstrndup(netobj->data, netobj->len, GFP_KERNEL);
+	return kmemdup_nul(netobj->data, netobj->len, GFP_KERNEL);
 }
 
 static void gssp_hostbased_service(char **principal)
-- 
2.20.1