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| author | Rafael J. Wysocki <rjw@sisk.pl> | 2012-02-09 23:54:09 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2012-02-09 23:54:09 +0100 |
| commit | 3ed3c7b559f3cae7a5a92860a127ceb0cafd5a9c (patch) | |
| tree | c8ab8e608222f07edf46a42e6ec3cb27ac4ceaa0 /net/ipv4/tcp.c | |
| parent | e470d06655e00749f6f9372e4fa4f20cea7ed7c5 (diff) | |
| parent | d020283dc694c9ec31b410f522252f7a8397e67d (diff) | |
| download | linux-3ed3c7b559f3cae7a5a92860a127ceb0cafd5a9c.tar.gz linux-3ed3c7b559f3cae7a5a92860a127ceb0cafd5a9c.tar.bz2 linux-3ed3c7b559f3cae7a5a92860a127ceb0cafd5a9c.zip | |
Merge commit 'pm-fixes-for-3.3-rc3' into pm-sleep
New material in the pm-sleep branch depends on recent
power management fixes.
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 9bcdec3ad772..06373b4a449a 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; |