Dmitry Yakunin 018d26fcd1 cgroup, netclassid: periodically release file_lock on classid updating ... In our production environment we have faced with problem that updating classid in cgroup with heavy tasks cause long freeze of the file tables in this tasks. By heavy tasks we understand tasks with many threads and opened sockets (e.g. balancers). This freeze leads to an increase number of client timeouts. This patch implements following logic to fix this issue: аfter iterating 1000 file descriptors file table lock will be released thus providing a time gap for socket creation/deletion. Now update is non atomic and socket may be skipped using calls: dup2(oldfd, newfd); close(oldfd); But this case is not typical. Moreover before this patch skip is possible too by hiding socket fd in unix socket buffer. New sockets will be allocated with updated classid because cgroup state is updated before start of the file descriptors iteration. So in common cases this patch has no side effects. Signed-off-by: Dmitry Yakunin <zeil@yandex-team.ru> Reviewed-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Signed-off-by: David S. Miller <davem@davemloft.net>		2020-03-09 18:13:39 -07:00
..
bpf_sk_storage.c	bpf: Improve bucket_log calculation logic	2020-02-07 23:01:41 +01:00
datagram.c	net: add queue argument to __skb_wait_for_more_packets and __skb_{,try_}recv_datagram	2019-12-09 09:59:07 +01:00
datagram.h	net/core: Allow the compiler to verify declaration and definition consistency	2019-03-27 13:49:44 -07:00
dev.c	net: Fix Tx hash bound checking	2020-02-26 11:14:10 -08:00
dev_addr_lists.c	net: remove unnecessary variables and callback	2019-10-24 14:53:49 -07:00
dev_ioctl.c	net: Introduce peer to peer one step PTP time stamping.	2019-12-25 19:51:34 -08:00
devlink.c	devlink: validate length of region addr/len	2020-03-03 13:28:48 -08:00
drop_monitor.c	drop_monitor: Do not cancel uninitialized work item	2020-02-07 18:48:36 +01:00
dst.c	net: print proper warning on dst underflow	2019-09-26 09:05:56 +02:00
dst_cache.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
failover.c	failover: allow name change on IFF_UP slave interfaces	2019-04-10 22:12:26 -07:00
fib_notifier.c	net: fib_notifier: propagate extack down to the notifier block callback	2019-10-04 11:10:56 -07:00
fib_rules.c	net: fib_rules: Correctly set table field when table number exceeds 8 bits	2020-02-16 18:38:24 -08:00
filter.c	treewide: remove redundant IS_ERR() before error code check	2020-02-04 03:05:27 +00:00
flow_dissector.c	flow_dissector: Fix to use new variables for port ranges in bpf hook	2020-01-27 11:25:07 +01:00
flow_offload.c	net: core: rename indirect block ingress cb function	2019-12-06 20:45:09 -08:00
gen_estimator.c	net_sched: gen_estimator: extend packet counter to 64bit	2019-11-06 21:51:36 -08:00
gen_stats.c	net_sched: add TCA_STATS_PKT64 attribute	2019-11-05 18:20:55 -08:00
gro_cells.c
hwbm.c	net: hwbm: Make the hwbm_pool lock a mutex	2019-06-09 19:40:10 -07:00
link_watch.c	net: link_watch: prevent starvation when processing linkwatch wq	2019-07-01 19:02:47 -07:00
lwt_bpf.c	net: ipv6_stub: use ip6_dst_lookup_flow instead of ip6_dst_lookup	2019-12-04 12:27:13 -08:00
lwtunnel.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
Makefile	ethtool: move to its own directory	2019-12-12 17:07:05 -08:00
neighbour.c	neigh_stat_seq_next() should increase position index	2020-01-24 11:42:18 +01:00
net-procfs.c	net: procfs: use index hashlist instead of name hashlist	2019-10-01 14:47:19 -07:00
net-sysfs.c	net-sysfs: Call dev_hold always in rx_queue_add_kobject	2019-12-17 22:57:11 -08:00
net-sysfs.h
net-traces.c	page_pool: add tracepoints for page_pool with details need by XDP	2019-06-19 11:23:13 -04:00
net_namespace.c	netns: Constify exported functions	2020-01-17 13:25:24 +01:00
netclassid_cgroup.c	cgroup, netclassid: periodically release file_lock on classid updating	2020-03-09 18:13:39 -07:00
netevent.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
netpoll.c	net: fix skb use after free in netpoll	2019-08-27 20:52:02 -07:00
netprio_cgroup.c	netprio: use css ID instead of cgroup ID	2019-11-12 08:18:03 -08:00
page_pool.c	page_pool: refill page when alloc.count of pool is zero	2020-02-13 14:11:51 -08:00
pktgen.c	proc: convert everything to "struct proc_ops"	2020-02-04 03:05:26 +00:00
ptp_classifier.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295	2019-06-05 17:36:38 +02:00
request_sock.c	tcp: add rcu protection around tp->fastopen_rsk	2019-10-13 10:13:08 -07:00
rtnetlink.c	net: rtnetlink: fix bugs in rtnl_alt_ifname()	2020-02-16 18:51:59 -08:00
scm.c	y2038: socket: remove timespec reference in timestamping	2019-11-15 14:38:29 +01:00
secure_seq.c	treewide: Add SPDX license identifier for missed files	2019-05-21 10:50:45 +02:00
skbuff.c	net: core: Distribute switch variables for initialization	2020-02-20 10:00:19 -08:00
skmsg.c	net, sk_msg: Don't check if sock is locked when tearing down psock	2020-01-22 20:30:20 +01:00
sock.c	xsk, net: Make sock_def_readable() have external linkage	2020-01-22 00:08:52 +01:00
sock_diag.c	sock: make cookie generation global instead of per netns	2019-08-09 13:14:46 -07:00
sock_map.c	bpf, sockhash: Synchronize_rcu before free'ing map	2020-02-07 22:36:26 +01:00
sock_reuseport.c	soreuseport: Cleanup duplicate initialization of more_reuse->max_socks.	2020-01-27 11:01:16 +01:00
stream.c	tcp: make sure EPOLLOUT wont be missed	2019-08-19 13:07:43 -07:00
sysctl_net_core.c	net, sysctl: Fix compiler warning when only cBPF is present	2019-12-19 17:17:51 +01:00
timestamping.c	net: Introduce a new MII time stamping interface.	2019-12-25 19:51:33 -08:00
tso.c	net: Use skb accessors in network core	2019-07-22 20:47:56 -07:00
utils.c	net: Fix skb->csum update in inet_proto_csum_replace16().	2020-01-24 20:54:30 +01:00
xdp.c	treewide: Use sizeof_field() macro	2019-12-09 10:36:44 -08:00