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authorGlauber Costa <glommer@parallels.com>2011-12-11 21:47:05 +0000
committerDavid S. Miller <davem@davemloft.net>2011-12-12 19:04:11 -0500
commit3dc43e3e4d0b52197d3205214fe8f162f9e0c334 (patch)
tree1770affeb483a6b4f06cde9f2a2f1289b41496d6 /net/ipv4/tcp_memcontrol.c
parentd1a4c0b37c296e600ffe08edb0db2dc1b8f550d7 (diff)
downloadop-kernel-dev-3dc43e3e4d0b52197d3205214fe8f162f9e0c334.zip
op-kernel-dev-3dc43e3e4d0b52197d3205214fe8f162f9e0c334.tar.gz
per-netns ipv4 sysctl_tcp_mem
This patch allows each namespace to independently set up its levels for tcp memory pressure thresholds. This patch alone does not buy much: we need to make this values per group of process somehow. This is achieved in the patches that follows in this patchset. Signed-off-by: Glauber Costa <glommer@parallels.com> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> CC: David S. Miller <davem@davemloft.net> CC: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_memcontrol.c')
-rw-r--r--net/ipv4/tcp_memcontrol.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/net/ipv4/tcp_memcontrol.c b/net/ipv4/tcp_memcontrol.c
index 4a68d2c..bfb0c2b 100644
--- a/net/ipv4/tcp_memcontrol.c
+++ b/net/ipv4/tcp_memcontrol.c
@@ -1,6 +1,8 @@
#include <net/tcp.h>
#include <net/tcp_memcontrol.h>
#include <net/sock.h>
+#include <net/ip.h>
+#include <linux/nsproxy.h>
#include <linux/memcontrol.h>
#include <linux/module.h>
@@ -28,6 +30,7 @@ int tcp_init_cgroup(struct cgroup *cgrp, struct cgroup_subsys *ss)
struct tcp_memcontrol *tcp;
struct mem_cgroup *memcg = mem_cgroup_from_cont(cgrp);
struct mem_cgroup *parent = parent_mem_cgroup(memcg);
+ struct net *net = current->nsproxy->net_ns;
cg_proto = tcp_prot.proto_cgroup(memcg);
if (!cg_proto)
@@ -35,9 +38,9 @@ int tcp_init_cgroup(struct cgroup *cgrp, struct cgroup_subsys *ss)
tcp = tcp_from_cgproto(cg_proto);
- tcp->tcp_prot_mem[0] = sysctl_tcp_mem[0];
- tcp->tcp_prot_mem[1] = sysctl_tcp_mem[1];
- tcp->tcp_prot_mem[2] = sysctl_tcp_mem[2];
+ tcp->tcp_prot_mem[0] = net->ipv4.sysctl_tcp_mem[0];
+ tcp->tcp_prot_mem[1] = net->ipv4.sysctl_tcp_mem[1];
+ tcp->tcp_prot_mem[2] = net->ipv4.sysctl_tcp_mem[2];
tcp->tcp_memory_pressure = 0;
parent_cg = tcp_prot.proto_cgroup(parent);
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