linux-kernel - [PATCH 3/3] xfrm/compat: Don't allocate memory with __GFP

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Date:   Fri, 30 Oct 2020 02:26:00 +0000
From:   Dmitry Safonov <dima@...sta.com>
To:     linux-kernel@...r.kernel.org
Cc:     Dmitry Safonov <0x7f454c46@...il.com>,
        Dmitry Safonov <dima@...sta.com>,
        Steffen Klassert <steffen.klassert@...unet.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Hillf Danton <hdanton@...a.com>, netdev@...r.kernel.org
Subject: [PATCH 3/3] xfrm/compat: Don't allocate memory with __GFP_ZERO

32-bit to 64-bit messages translator zerofies needed paddings in the
translation, the rest is the actual payload.
Don't allocate zero pages as they are not needed.

Signed-off-by: Dmitry Safonov <dima@...sta.com>
---
 net/xfrm/xfrm_compat.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/xfrm/xfrm_compat.c b/net/xfrm/xfrm_compat.c
index 556e9f33b815..d8e8a11ca845 100644
--- a/net/xfrm/xfrm_compat.c
+++ b/net/xfrm/xfrm_compat.c
@@ -564,7 +564,7 @@ static struct nlmsghdr *xfrm_user_rcv_msg_compat(const struct nlmsghdr *h32,
 		return NULL;
 
 	len += NLMSG_HDRLEN;
-	h64 = kvmalloc(len, GFP_KERNEL | __GFP_ZERO);
+	h64 = kvmalloc(len, GFP_KERNEL);
 	if (!h64)
 		return ERR_PTR(-ENOMEM);
 
-- 
2.28.0