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| author | Eric W. Biederman <ebiederm@xmission.com> | 2013-12-04 20:12:04 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-12-05 21:01:01 -0500 |
| commit | 7f2cbdc28c034ef2c3be729681f631d5744e3cd5 (patch) | |
| tree | 22555da20fc62c75e47334e3d30db407f88a5ec4 /include | |
| parent | 86d9be263a7ad6f17214d7f112b4c8739137485d (diff) | |
| download | linux-0-day-7f2cbdc28c034ef2c3be729681f631d5744e3cd5.tar.gz linux-0-day-7f2cbdc28c034ef2c3be729681f631d5744e3cd5.tar.xz | |
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 'include')
| -rw-r--r-- | include/net/sock.h | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index e3a18ff0c38b5..2ef3c3eca47aa 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -1035,7 +1035,6 @@ enum cg_proto_flags { }; struct cg_proto { - void (*enter_memory_pressure)(struct sock *sk); struct res_counter memory_allocated; /* Current allocated memory. */ struct percpu_counter sockets_allocated; /* Current number of sockets. */ int memory_pressure; @@ -1155,8 +1154,7 @@ static inline void sk_leave_memory_pressure(struct sock *sk) struct proto *prot = sk->sk_prot; for (; cg_proto; cg_proto = parent_cg_proto(prot, cg_proto)) - if (cg_proto->memory_pressure) - cg_proto->memory_pressure = 0; + cg_proto->memory_pressure = 0; } } @@ -1171,7 +1169,7 @@ static inline void sk_enter_memory_pressure(struct sock *sk) struct proto *prot = sk->sk_prot; for (; cg_proto; cg_proto = parent_cg_proto(prot, cg_proto)) - cg_proto->enter_memory_pressure(sk); + cg_proto->memory_pressure = 1; } sk->sk_prot->enter_memory_pressure(sk); |