diff mbox series

[v4,05/16] memcg: ipv6/sit: account and don't WARN on ip_tunnel_prl structs allocation

Message ID 545b0c99-339d-e450-ced3-49918ba6b6a5@virtuozzo.com (mailing list archive)
State Not Applicable
Delegated to: Netdev Maintainers
Headers show
Series [v4,01/16] memcg: enable accounting for net_device and Tx/Rx queues | expand

Commit Message

Vasily Averin April 28, 2021, 6:52 a.m. UTC 
Author: Andrey Ryabinin <aryabinin@virtuozzo.com>

The size of the ip_tunnel_prl structs allocation is controllable from
user-space, thus it's better to avoid spam in dmesg if allocation failed.
Also add __GFP_ACCOUNT as this is a good candidate for per-memcg
accounting. Allocation is temporary and limited by 4GB.

Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
---
 net/ipv6/sit.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 9fdccf0..2ba147c 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -320,7 +320,7 @@  static int ipip6_tunnel_get_prl(struct net_device *dev, struct ifreq *ifr)
 	 * we try harder to allocate.
 	 */
 	kp = (cmax <= 1 || capable(CAP_NET_ADMIN)) ?
-		kcalloc(cmax, sizeof(*kp), GFP_KERNEL | __GFP_NOWARN) :
+		kcalloc(cmax, sizeof(*kp), GFP_KERNEL_ACCOUNT | __GFP_NOWARN) :
 		NULL;
 
 	rcu_read_lock();
@@ -333,7 +333,8 @@  static int ipip6_tunnel_get_prl(struct net_device *dev, struct ifreq *ifr)
 		 * For root users, retry allocating enough memory for
 		 * the answer.
 		 */
-		kp = kcalloc(ca, sizeof(*kp), GFP_ATOMIC);
+		kp = kcalloc(ca, sizeof(*kp), GFP_ATOMIC | __GFP_ACCOUNT |
+					      __GFP_NOWARN);
 		if (!kp) {
 			ret = -ENOMEM;
 			goto out;