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authorEric W. Biederman <ebiederm@xmission.com>2013-12-04 20:12:04 -0800
committerDavid S. Miller <davem@davemloft.net>2013-12-05 21:01:01 -0500
commit7f2cbdc28c034ef2c3be729681f631d5744e3cd5 (patch)
tree22555da20fc62c75e47334e3d30db407f88a5ec4 /net
parent86d9be263a7ad6f17214d7f112b4c8739137485d (diff)
tcp_memcontrol: Cleanup/fix cg_proto->memory_pressure handling.
kill memcg_tcp_enter_memory_pressure. The only function of memcg_tcp_enter_memory_pressure was to reduce deal with the unnecessary abstraction that was tcp_memcontrol. Now that struct tcp_memcontrol is gone remove this unnecessary function, the unnecessary function pointer, and modify sk_enter_memory_pressure to set this field directly, just as sk_leave_memory_pressure cleas this field directly. This fixes a small bug I intruduced when killing struct tcp_memcontrol that caused memcg_tcp_enter_memory_pressure to never be called and thus failed to ever set cg_proto->memory_pressure. Remove the cg_proto enter_memory_pressure function as it now serves no useful purpose. Don't test cg_proto->memory_presser in sk_leave_memory_pressure before clearing it. The test was originally there to ensure that the pointer was non-NULL. Now that cg_proto is not a pointer the pointer does not matter. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/tcp_memcontrol.c7
1 files changed, 0 insertions, 7 deletions
diff --git a/net/ipv4/tcp_memcontrol.c b/net/ipv4/tcp_memcontrol.c
index 269a89ecd2f4..f7e522c558ba 100644
--- a/net/ipv4/tcp_memcontrol.c
+++ b/net/ipv4/tcp_memcontrol.c
@@ -6,13 +6,6 @@
#include <linux/memcontrol.h>
#include <linux/module.h>
-static void memcg_tcp_enter_memory_pressure(struct sock *sk)
-{
- if (sk->sk_cgrp->memory_pressure)
- sk->sk_cgrp->memory_pressure = 1;
-}
-EXPORT_SYMBOL(memcg_tcp_enter_memory_pressure);
-
int tcp_init_cgroup(struct mem_cgroup *memcg, struct cgroup_subsys *ss)
{
/*