Glauber Costa 0e90b31f4b net: introduce res_counter_charge_nofail() for socket allocations ... There is a case in __sk_mem_schedule(), where an allocation is beyond the maximum, but yet we are allowed to proceed. It happens under the following condition: sk->sk_wmem_queued + size >= sk->sk_sndbuf The network code won't revert the allocation in this case, meaning that at some point later it'll try to do it. Since this is never communicated to the underlying res_counter code, there is an inbalance in res_counter uncharge operation. I see two ways of fixing this: 1) storing the information about those allocations somewhere in memcg, and then deducting from that first, before we start draining the res_counter, 2) providing a slightly different allocation function for the res_counter, that matches the original behavior of the network code more closely. I decided to go for #2 here, believing it to be more elegant, since #1 would require us to do basically that, but in a more obscure way. Signed-off-by: Glauber Costa <glommer@parallels.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@suse.cz> CC: Tejun Heo <tj@kernel.org> CC: Li Zefan <lizf@cn.fujitsu.com> CC: Laurent Chavey <chavey@google.com> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>		2012-01-22 15:08:46 -05:00
..
datagram.c
dev.c	net: fix NULL-deref in WARN() in skb_gso_segment()	2012-01-17 15:51:23 -05:00
dev_addr_lists.c	net: introduce netif_addr_lock_nested() and call if when appropriate	2012-01-09 12:46:58 -08:00
drop_monitor.c
dst.c	net: Rename dst_get_neighbour{, _raw} to dst_get_neighbour_noref{, _raw}.	2011-12-05 15:20:19 -05:00
ethtool.c	ethtool: Remove ethtool_ops::set_rx_ntuple operation	2012-01-04 14:10:28 -05:00
fib_rules.c
filter.c
flow.c	net: Add a flow_cache_flush_deferred function	2011-12-21 16:48:08 -05:00
flow_dissector.c	flow_dissector: use a 64bit load/store	2011-11-29 13:17:03 -05:00
gen_estimator.c
gen_stats.c
iovec.c
kmap_skb.h
link_watch.c
Makefile	sock_diag: Move the sock_ code to net/core/	2011-12-06 13:58:02 -05:00
neighbour.c	ipv6: Use universal hash for NDISC.	2011-12-28 15:06:58 -05:00
net-sysfs.c	bql: Fix inconsistency between file mode and attr method.	2012-01-17 10:05:55 -05:00
net-sysfs.h
net-traces.c
net_namespace.c
netevent.c
netpoll.c	net: reintroduce missing rcu_assign_pointer() calls	2012-01-12 12:26:56 -08:00
netprio_cgroup.c	Revert "net: netprio_cgroup: make net_prio_subsys static"	2011-12-09 13:39:27 -05:00
pktgen.c	pktgen: Fix unsigned function that is returning negative vals	2012-01-22 15:08:44 -05:00
request_sock.c	ipv4:correct description for tcp_max_syn_backlog	2011-12-06 13:02:28 -05:00
rtnetlink.c	Merge branch 'for-linus' of git://selinuxproject.org/~jmorris/linux-security	2012-01-14 18:36:33 -08:00
scm.c
secure_seq.c	net: fix some sparse errors	2012-01-17 10:31:12 -05:00
skbuff.c	net:core: use IS_ENABLED	2011-12-16 15:49:51 -05:00
sock.c	net: introduce res_counter_charge_nofail() for socket allocations	2012-01-22 15:08:46 -05:00
sock_diag.c	sock_diag: Introduce the meminfo nla core (v2)	2011-12-30 16:42:19 -05:00
stream.c
sysctl_net_core.c
timestamping.c
user_dma.c
utils.c