diff options
| author | Vasily Averin <vvs@virtuozzo.com> | 2021-07-19 13:44:37 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-07-20 16:00:38 +0300 |
| commit | 990c74e3f41d7ae9711d3fb3e8b3f0d3088e0969 (patch) | |
| tree | 3f49a521075ec7638f10748023cdc17c963956c6 /net | |
| parent | 6126891c6d4f6f4ef50323d2020635ee255a796e (diff) | |
| download | linux-990c74e3f41d7ae9711d3fb3e8b3f0d3088e0969.tar.xz | |
memcg: enable accounting for inet_bin_bucket cache
net namespace can create up to 64K tcp and dccp ports and force kernel
to allocate up to several megabytes of memory per netns
for inet_bind_bucket objects.
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@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/dccp/proto.c | 2 | ||||
| -rw-r--r-- | net/ipv4/tcp.c | 4 |
2 files changed, 4 insertions, 2 deletions
diff --git a/net/dccp/proto.c b/net/dccp/proto.c index 7eb0fb231940..abb5c596a817 100644 --- a/net/dccp/proto.c +++ b/net/dccp/proto.c @@ -1126,7 +1126,7 @@ static int __init dccp_init(void) dccp_hashinfo.bind_bucket_cachep = kmem_cache_create("dccp_bind_bucket", sizeof(struct inet_bind_bucket), 0, - SLAB_HWCACHE_ALIGN, NULL); + SLAB_HWCACHE_ALIGN | SLAB_ACCOUNT, NULL); if (!dccp_hashinfo.bind_bucket_cachep) goto out_free_hashinfo2; diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 8cb44040ec68..f931def6302e 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -4512,7 +4512,9 @@ void __init tcp_init(void) tcp_hashinfo.bind_bucket_cachep = kmem_cache_create("tcp_bind_bucket", sizeof(struct inet_bind_bucket), 0, - SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL); + SLAB_HWCACHE_ALIGN | SLAB_PANIC | + SLAB_ACCOUNT, + NULL); /* Size and allocate the main established and bind bucket * hash tables. |