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Glauber Costa 4acb41903b net/tcp: Fix tcp memory limits initialization when !CONFIG_SYSCTL 
sysctl_tcp_mem() initialization was moved to sysctl_tcp_ipv4.c
in commit 3dc43e3e4d, since it
became a per-ns value.

That code, however, will never run when CONFIG_SYSCTL is
disabled, leading to bogus values on those fields - causing hung
TCP sockets.

This patch fixes it by keeping an initialization code in
tcp_init(). It will be overwritten by the first net namespace
init if CONFIG_SYSCTL is compiled in, and do the right thing if
it is compiled out.

It is also named properly as tcp_init_mem(), to properly signal
its non-sysctl side effect on TCP limits.

Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Glauber Costa <glommer@parallels.com>
Cc: David S. Miller <davem@davemloft.net>
Link: http://lkml.kernel.org/r/4F22D05A.8030604@parallels.com
[ renamed the function, tidied up the changelog a bit ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-30 12:41:06 -05:00
..
9p 9p: Reduce object size with CONFIG_NET_9P_DEBUG 2012-01-05 10:51:44 -06:00
bluetooth bluetooth: hci: Fix type of "enable_hs" to bool. 2012-01-22 15:08:46 -05:00
caif caif-spi: Bugfix for dump upon device removal 2011-12-06 13:34:12 -05:00
irda Fix common misspellings 2011-03-31 11:26:23 -03:00
iucv af_iucv: get rid of state IUCV_SEVERED 2011-12-20 14:05:03 -05:00
netfilter Merge branch 'nf-next' of git://1984.lsi.us.es/net-next 2011-12-25 02:21:45 -05:00
netns netns: Fail conspicously if someone uses net_generic at an inappropriate time. 2012-01-27 21:06:02 -05:00
nfc NFC: Export a new attribute nfcid1 in target info 2012-01-04 14:30:43 -05:00
phonet net: dont hold rtnl mutex during netlink dump callbacks 2011-05-02 15:26:28 -07:00
sctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2011-12-23 17:13:56 -05:00
tc_act
act_api.h net: sched: constify tcf_proto and tc_action 2011-07-06 02:52:16 -07:00
addrconf.h ipv6: Check RA for sllao when configuring optimistic ipv6 address (v2) 2012-01-04 15:53:20 -05:00
af_ieee802154.h
af_rxrpc.h net: Remove __KERNEL__ cpp checks from include/net 2011-04-24 10:54:56 -07:00
af_unix.h af_unix: Move CINQ/COUTQ code to helpers 2011-12-30 16:45:45 -05:00
ah.h
arp.h ipv6: Use universal hash for NDISC. 2011-12-28 15:06:58 -05:00
atmclip.h atm: clip: Use device neigh support on top of "arp_tbl". 2011-11-30 18:51:03 -05:00
ax25.h atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
ax88796.h
cfg80211-wext.h cfg80211: remove unused wext handler exports 2011-08-08 14:26:29 -04:00
cfg80211.h kernel-doc: fix new warnings in cfg80211.h 2012-01-23 08:44:54 -08:00
checksum.h
cipso_ipv4.h doc: Update the email address for Paul Moore in various source files 2011-08-01 17:58:33 -07:00
cls_cgroup.h
compat.h net: Add sendmmsg socket system call 2011-05-05 11:10:14 -07:00
datalink.h
dcbevent.h dcb: Add stub routines for !CONFIG_DCB 2011-10-06 15:49:51 -04:00
dcbnl.h dcb: add DCBX mode to event notifier attributes 2011-10-06 15:49:51 -04:00
dn.h
dn_dev.h
dn_fib.h
dn_neigh.h
dn_nsp.h
dn_route.h
dsa.h dsa: Include linux/if_ether.h to fix build error 2011-12-01 11:41:06 -05:00
dsfield.h
dst.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2011-12-23 17:13:56 -05:00
dst_ops.h net: Rename the dst_opt default_mtu method to mtu 2011-11-26 14:29:50 -05:00
esp.h
ethoc.h
fib_rules.h
flow.h net: fix some sparse errors 2012-01-17 10:31:12 -05:00
flow_keys.h flow_dissector: use a 64bit load/store 2011-11-29 13:17:03 -05:00
garp.h garp: remove last synchronize_rcu() call 2011-05-12 17:46:56 -04:00
gen_stats.h Fix common misspellings 2011-03-31 11:26:23 -03:00
genetlink.h genetlink: Add genl_notify() 2011-12-03 09:35:05 -08:00
gre.h
icmp.h ipv4: reduce percpu needs for icmpmsg mibs 2011-11-09 16:04:20 -05:00
ieee80211_radiotap.h wireless: move ieee80211chan2mhz macro 2011-11-11 12:32:50 -05:00
ieee802154.h 6LoWPAN: add fragmentation support 2011-11-14 00:19:42 -05:00
ieee802154_netdev.h
if_inet6.h ipv6: updates to privacy addresses per RFC 4941. 2011-08-01 18:05:00 -07:00
inet6_connection_sock.h inet: Pass flowi to ->queue_xmit(). 2011-05-08 15:28:28 -07:00
inet6_hashtables.h net: use IS_ENABLED(CONFIG_IPV6) 2011-12-11 18:25:16 -05:00
inet_common.h
inet_connection_sock.h net: rename sk_clone to sk_clone_lock 2011-11-08 17:07:07 -05:00
inet_ecn.h inet: add rfc 3168 extract in front of INET_ECN_encapsulate() 2011-10-22 01:25:23 -04:00
inet_frag.h
inet_hashtables.h atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
inet_sock.h net: use IS_ENABLED(CONFIG_IPV6) 2011-12-11 18:25:16 -05:00
inet_timewait_sock.h inet: remove rcu protection on tw_net 2011-12-14 13:34:55 -05:00
inetpeer.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2011-12-02 13:49:21 -05:00
ip.h net: use IS_ENABLED(CONFIG_IPV6) 2011-12-11 18:25:16 -05:00
ip6_checksum.h
ip6_fib.h IPv6: Avoid taking write lock for /proc/net/ipv6_route 2011-12-30 17:07:33 -05:00
ip6_route.h Merge branch 'nf-next' of git://1984.lsi.us.es/net-next 2011-12-25 02:21:45 -05:00
ip6_tunnel.h
ip_fib.h ipv4: Call fib_select_default() only when actually necessary. 2011-04-14 15:05:22 -07:00
ip_vs.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-01-02 18:56:49 -05:00
ipcomp.h
ipconfig.h
ipip.h
ipv6.h ipv6: Add fragment reporting to ipv6_skip_exthdr(). 2011-12-03 09:35:10 -08:00
ipx.h net: Remove __KERNEL__ cpp checks from include/net 2011-04-24 10:54:56 -07:00
iw_handler.h Fix common misspellings 2011-03-31 11:26:23 -03:00
lapb.h wan: make LAPB callbacks const 2011-09-16 19:20:20 -04:00
lib80211.h include: replace linux/module.h with "struct module" wherever possible 2011-10-31 19:32:32 -04:00
llc.h atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
llc_c_ac.h
llc_c_ev.h
llc_c_st.h
llc_conn.h
llc_if.h
llc_pdu.h bonding,llc: Fix structure sizeof incompatibility for some PDUs 2011-05-13 15:13:24 -04:00
llc_s_ac.h
llc_s_ev.h
llc_s_st.h
llc_sap.h
mac80211.h Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-01-08 13:21:22 -08:00
mip6.h
mld.h
ndisc.h ipv6: Create fast inline ipv6 neigh lookup just like ipv4. 2011-12-28 15:41:23 -05:00
neighbour.h ipv6: Use universal hash for NDISC. 2011-12-28 15:06:58 -05:00
net_namespace.h net: use IS_ENABLED(CONFIG_IPV6) 2011-12-11 18:25:16 -05:00
net_ratelimit.h net: Kill ratelimit.h dependency in linux/net.h 2011-05-27 13:41:33 -04:00
netdma.h
netevent.h net: Remove __KERNEL__ cpp checks from include/net 2011-04-24 10:54:56 -07:00
netlabel.h doc: Update the email address for Paul Moore in various source files 2011-08-01 17:58:33 -07:00
netlink.h netlink: clarify attribute length check documentation 2011-11-04 17:48:23 -04:00
netprio_cgroup.h netprio_cgroup.h: dont include module.h from other includes 2012-01-24 16:42:26 -05:00
netrom.h
nexthop.h
nl802154.h
p8022.h
ping.h net: ping: fix build failure 2011-05-17 14:16:58 -04:00
pkt_cls.h
pkt_sched.h net: sched: constify tcf_proto and tc_action 2011-07-06 02:52:16 -07:00
protocol.h net: use IS_ENABLED(CONFIG_IPV6) 2011-12-11 18:25:16 -05:00
psnap.h
raw.h
rawv6.h net: Remove __KERNEL__ cpp checks from include/net 2011-04-24 10:54:56 -07:00
red.h net_sched: sfq: add optional RED on top of SFQ 2012-01-12 20:05:28 -08:00
regulatory.h cfg80211: pass DFS region to drivers through reg_notifier() 2011-11-21 16:20:41 -05:00
request_sock.h tcp: Change possible SYN flooding messages 2011-09-15 14:49:43 -04:00
rose.h rose: Add length checks to CALL_REQUEST parsing 2011-03-27 17:59:04 -07:00
route.h route: struct rtable can be const in rt_is_input_route and rt_is_output_route 2011-11-26 14:29:51 -05:00
rtnetlink.h rtnetlink: Compute and store minimum ifinfo dump size 2011-06-09 20:38:07 -07:00
sch_generic.h net: sch_generic remove redundant use of <linux/module.h> 2011-10-31 19:32:25 -04:00
scm.h af_unix: dont send SCM_CREDENTIALS by default 2011-09-28 13:29:50 -04:00
secure_seq.h tcp: add const qualifiers where possible 2011-10-21 05:22:42 -04:00
slhc_vj.h
snmp.h Merge branch 'for-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu 2012-01-09 13:08:28 -08:00
sock.h net: explicitly add jump_label.h header to sock.h 2012-01-26 17:13:26 -05:00
stp.h
tcp.h net/tcp: Fix tcp memory limits initialization when !CONFIG_SYSCTL 2012-01-30 12:41:06 -05:00
tcp_memcontrol.h tcp buffer limitation: per-cgroup limit 2011-12-12 19:04:11 -05:00
tcp_states.h
timewait_sock.h
transp_v6.h net: relax PKTINFO non local ipv6 udp xmit check 2011-08-30 17:39:01 -04:00
udp.h net: use IS_ENABLED(CONFIG_IPV6) 2011-12-11 18:25:16 -05:00
udplite.h udplite: fast-path computation of checksum coverage 2011-10-17 19:07:30 -04:00
wext.h
wimax.h net: wimax: Remove of unused 'rfkill_input' pointer 2011-06-24 17:50:44 -07:00
wpan-phy.h Fix common misspellings 2011-03-31 11:26:23 -03:00
x25.h
x25device.h
xfrm.h net: remove ipv6_addr_copy() 2011-11-22 16:43:32 -05:00