netdev - [PATCH v4 04/16] memcg: enable accounting for VLAN group array

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Message-ID: <b3c1aceb-6a12-0848-95fa-f5447602f794@virtuozzo.com>
Date:   Wed, 28 Apr 2021 09:52:06 +0300
From:   Vasily Averin <vvs@...tuozzo.com>
To:     cgroups@...r.kernel.org, Michal Hocko <mhocko@...nel.org>,
        Shakeel Butt <shakeelb@...gle.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Vladimir Davydov <vdavydov.dev@...il.com>
Cc:     Roman Gushchin <guro@...com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v4 04/16] memcg: enable accounting for VLAN group array

vlan array consume up to 8 pages of memory per net device.

It makes sense to account for them to restrict the host's memory
consumption from inside the memcg-limited container.

Signed-off-by: Vasily Averin <vvs@...tuozzo.com>
---
 net/8021q/vlan.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 8b644113..d0a579d4 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -67,7 +67,7 @@ static int vlan_group_prealloc_vid(struct vlan_group *vg,
 		return 0;
 
 	size = sizeof(struct net_device *) * VLAN_GROUP_ARRAY_PART_LEN;
-	array = kzalloc(size, GFP_KERNEL);
+	array = kzalloc(size, GFP_KERNEL_ACCOUNT);
 	if (array == NULL)
 		return -ENOBUFS;
 
-- 
1.8.3.1