Was only checked by the removed prequeue code.
Signed-off-by: Florian Westphal <f...@strlen.de>
---
Documentation/networking/ip-sysctl.txt | 7 +------
include/net/tcp.h | 1 -
net/ipv4/sysctl_net_ipv4.c | 3 +++
net/ipv4/tcp_ipv4.c | 2 --
4 files changed, 4 insertions(+), 9 deletions(-)
diff --git a/Documentation/networking/ip-sysctl.txt
b/Documentation/networking/ip-sysctl.txt
index f485d553e65c..84c9b8cee780 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -353,12 +353,7 @@ tcp_l3mdev_accept - BOOLEAN
compiled with CONFIG_NET_L3_MASTER_DEV.
tcp_low_latency - BOOLEAN
- If set, the TCP stack makes decisions that prefer lower
- latency as opposed to higher throughput. By default, this
- option is not set meaning that higher throughput is preferred.
- An example of an application where this default should be
- changed would be a Beowulf compute cluster.
- Default: 0
+ This is a legacy option, it has no effect anymore.
tcp_max_orphans - INTEGER
Maximal number of TCP sockets not attached to any user file handle,
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 93f115cfc8f8..8507c81fb0e9 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -256,7 +256,6 @@ extern int sysctl_tcp_rmem[3];
extern int sysctl_tcp_app_win;
extern int sysctl_tcp_adv_win_scale;
extern int sysctl_tcp_frto;
-extern int sysctl_tcp_low_latency;
extern int sysctl_tcp_nometrics_save;
extern int sysctl_tcp_moderate_rcvbuf;
extern int sysctl_tcp_tso_win_divisor;
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 9bf809726066..0d3c038d7b04 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -45,6 +45,9 @@ static int tcp_syn_retries_max = MAX_TCP_SYNCNT;
static int ip_ping_group_range_min[] = { 0, 0 };
static int ip_ping_group_range_max[] = { GID_T_MAX, GID_T_MAX };
+/* obsolete */
+static int sysctl_tcp_low_latency __read_mostly;
+
/* Update system visible IP port range */
static void set_local_port_range(struct net *net, int range[2])
{
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index a68eb4577d36..9b51663cd5a4 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -85,8 +85,6 @@
#include <crypto/hash.h>
#include <linux/scatterlist.h>
-int sysctl_tcp_low_latency __read_mostly;
-
#ifdef CONFIG_TCP_MD5SIG
static int tcp_v4_md5_hash_hdr(char *md5_hash, const struct tcp_md5sig_key
*key,
__be32 daddr, __be32 saddr, const struct tcphdr
*th);
--
2.13.0
