netdev - [PATCH net-next 0/5] Introduce net_rwsem to protect net_namespace

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Date:   Thu, 29 Mar 2018 19:20:23 +0300
From:   Kirill Tkhai <ktkhai@...tuozzo.com>
To:     dledford@...hat.com, jgg@...pe.ca, davem@...emloft.net,
        pablo@...filter.org, kadlec@...ckhole.kfki.hu, fw@...len.de,
        pshelar@....org, johannes@...solutions.net, paul@...l-moore.com,
        sds@...ho.nsa.gov, eparis@...isplace.org, jmorris@...ei.org,
        serge@...lyn.com, leon@...nel.org, yuval.shaia@...cle.com,
        parav@...lanox.com, danielj@...lanox.com, ktkhai@...tuozzo.com,
        majd@...lanox.com, nicolas.dichtel@...nd.com, vyasevic@...hat.com,
        paulmck@...ux.vnet.ibm.com, vyasevich@...il.com,
        gregkh@...uxfoundation.org, daniel@...earbox.net,
        jakub.kicinski@...ronome.com, ast@...nel.org, brouer@...hat.com,
        linux@...musvillemoes.dk, john.fastabend@...il.com,
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        vvs@...tuozzo.com, avagin@...tuozzo.com, roman.kapl@...go.com,
        lucien.xin@...il.com, christian.brauner@...ntu.com,
        jbenc@...hat.com, pombredanne@...b.com, linux-rdma@...r.kernel.org,
        netdev@...r.kernel.org, netfilter-devel@...r.kernel.org,
        coreteam@...filter.org, dev@...nvswitch.org,
        linux-wireless@...r.kernel.org, selinux@...ho.nsa.gov,
        linux-security-module@...r.kernel.org
Subject: [PATCH net-next 0/5] Introduce net_rwsem to protect
 net_namespace_list

The series introduces fine grained rw_semaphore, which will be used
instead of rtnl_lock() to protect net_namespace_list.

This improves scalability and allows to do non-exclusive sleepable
iteration for_each_net(), which is enough for most cases.

scripts/get_maintainer.pl gives enormous list of people, and I add
all to CC.

Note, that this patch is independent of "Close race between
{un, }register_netdevice_notifier and pernet_operations":
https://patchwork.ozlabs.org/project/netdev/list/?series=36495

Signed-off-by: Kirill Tkhai <ktkhai@...tuozzo.com>
---

Kirill Tkhai (5):
      net: Introduce net_rwsem to protect net_namespace_list
      net: Don't take rtnl_lock() in wireless_nlevent_flush()
      security: Remove rtnl_lock() in selinux_xfrm_notify_policyload()
      ovs: Remove rtnl_lock() from ovs_exit_net()
      net: Remove rtnl_lock() in nf_ct_iterate_destroy()


 drivers/infiniband/core/roce_gid_mgmt.c |    2 ++
 include/linux/rtnetlink.h               |    1 +
 include/net/net_namespace.h             |    1 +
 net/core/dev.c                          |    5 +++++
 net/core/fib_notifier.c                 |    2 ++
 net/core/net_namespace.c                |   18 +++++++++++++-----
 net/core/rtnetlink.c                    |    5 +++++
 net/netfilter/nf_conntrack_core.c       |    4 ++--
 net/openvswitch/datapath.c              |    4 ++--
 net/wireless/wext-core.c                |    6 ++----
 security/selinux/include/xfrm.h         |    4 ++--
 11 files changed, 37 insertions(+), 15 deletions(-)

--
Signed-off-by: Kirill Tkhai <ktkhai@...tuozzo.com>