diff options
| author | Johannes Weiner <hannes@cmpxchg.org> | 2016-01-14 15:21:08 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-14 16:00:49 -0800 |
| commit | af95d7df4059cfeab7e7c244f3564214aada7dad (patch) | |
| tree | 137a733624782b600d61c0f2d995182f0c8d7dfa /net | |
| parent | 3d596f7b907b0281b997cf30c92994a71ad0a1a9 (diff) | |
| download | linux-af95d7df4059cfeab7e7c244f3564214aada7dad.tar.bz2 | |
net: tcp_memcontrol: remove dead per-memcg count of allocated sockets
The number of allocated sockets is used for calculations in the soft
limit phase, where packets are accepted but the socket is under memory
pressure.
Since there is no soft limit phase in tcp_memcontrol, and memory
pressure is only entered when packets are already dropped, this is
actually dead code. Remove it.
As this is the last user of parent_cg_proto(), remove that too.
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: David S. Miller <davem@davemloft.net>
Reviewed-by: Vladimir Davydov <vdavydov@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/tcp_memcontrol.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/net/ipv4/tcp_memcontrol.c b/net/ipv4/tcp_memcontrol.c index d07579ada001..6759e0d6bba1 100644 --- a/net/ipv4/tcp_memcontrol.c +++ b/net/ipv4/tcp_memcontrol.c @@ -32,7 +32,6 @@ int tcp_init_cgroup(struct mem_cgroup *memcg, struct cgroup_subsys *ss) counter_parent = &parent_cg->memory_allocated; page_counter_init(&cg_proto->memory_allocated, counter_parent); - percpu_counter_init(&cg_proto->sockets_allocated, 0, GFP_KERNEL); return 0; } @@ -46,8 +45,6 @@ void tcp_destroy_cgroup(struct mem_cgroup *memcg) if (!cg_proto) return; - percpu_counter_destroy(&cg_proto->sockets_allocated); - if (cg_proto->active) static_key_slow_dec(&memcg_socket_limit_enabled); |