diff options
| author | Glauber Costa <glommer@parallels.com> | 2011-12-11 21:47:02 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-12-12 19:04:10 -0500 |
| commit | 180d8cd942ce336b2c869d324855c40c5db478ad (patch) | |
| tree | 2424d854345d81464d6030ef8090a8e22bd414b0 /net/ipv4/tcp_output.c | |
| parent | e5671dfae59b165e2adfd4dfbdeab11ac8db5bda (diff) | |
| download | lwn-180d8cd942ce336b2c869d324855c40c5db478ad.tar.gz lwn-180d8cd942ce336b2c869d324855c40c5db478ad.zip | |
foundations of per-cgroup memory pressure controlling.
This patch replaces all uses of struct sock fields' memory_pressure,
memory_allocated, sockets_allocated, and sysctl_mem to acessor
macros. Those macros can either receive a socket argument, or a mem_cgroup
argument, depending on the context they live in.
Since we're only doing a macro wrapping here, no performance impact at all is
expected in the case where we don't have cgroups disabled.
Signed-off-by: Glauber Costa <glommer@parallels.com>
Reviewed-by: Hiroyouki Kamezawa <kamezawa.hiroyu@jp.fujitsu.com>
CC: David S. Miller <davem@davemloft.net>
CC: Eric W. Biederman <ebiederm@xmission.com>
CC: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_output.c')
| -rw-r--r-- | net/ipv4/tcp_output.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index cf3068038942..8c8de2780c7a 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -1922,7 +1922,7 @@ u32 __tcp_select_window(struct sock *sk) if (free_space < (full_space >> 1)) { icsk->icsk_ack.quick = 0; - if (tcp_memory_pressure) + if (sk_under_memory_pressure(sk)) tp->rcv_ssthresh = min(tp->rcv_ssthresh, 4U * tp->advmss); |