diff options
| author | Olof Johansson <olof@lixom.net> | 2012-02-07 15:04:15 -0800 |
|---|---|---|
| committer | Olof Johansson <olof@lixom.net> | 2012-02-07 15:05:20 -0800 |
| commit | a5f17d1f4c2831b9b9bf8b1a537cdbac995d6e13 (patch) | |
| tree | cce7eab28de00a88d75b8eda704f5838e10947b1 /net/ipv4/tcp.c | |
| parent | dcf81c1af839b77b44404453ecae6e5ac5a75f05 (diff) | |
| parent | 62aa2b537c6f5957afd98e29f96897419ed5ebab (diff) | |
Merge tag 'v3.3-rc2' into depends/rmk/for-armsoc
There were conflicts between fixes going in after 3.3-rc1 and
Russell's stable arm-soc base branch. Resolving it in the dependency
branch so that each topic branch shares the same resolution.
Conflicts:
arch/arm/mach-at91/at91cap9.c
arch/arm/mach-at91/at91sam9g45.c
Diffstat (limited to 'net/ipv4/tcp.c')
| -rw-r--r-- | net/ipv4/tcp.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 9bcdec3ad77..06373b4a449 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -3216,6 +3216,16 @@ static int __init set_thash_entries(char *str) } __setup("thash_entries=", set_thash_entries); +void tcp_init_mem(struct net *net) +{ + /* Set per-socket limits to no more than 1/128 the pressure threshold */ + unsigned long limit = nr_free_buffer_pages() / 8; + limit = max(limit, 128UL); + net->ipv4.sysctl_tcp_mem[0] = limit / 4 * 3; + net->ipv4.sysctl_tcp_mem[1] = limit; + net->ipv4.sysctl_tcp_mem[2] = net->ipv4.sysctl_tcp_mem[0] * 2; +} + void __init tcp_init(void) { struct sk_buff *skb = NULL; @@ -3276,9 +3286,9 @@ void __init tcp_init(void) sysctl_tcp_max_orphans = cnt / 2; sysctl_max_syn_backlog = max(128, cnt / 256); - /* Set per-socket limits to no more than 1/128 the pressure threshold */ - limit = ((unsigned long)init_net.ipv4.sysctl_tcp_mem[1]) - << (PAGE_SHIFT - 7); + tcp_init_mem(&init_net); + limit = nr_free_buffer_pages() / 8; + limit = max(limit, 128UL); max_share = min(4UL*1024*1024, limit); sysctl_tcp_wmem[0] = SK_MEM_QUANTUM; |