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From:   Jan Dakinevich <jan.dakinevich@virtuozzo.com>
To:     "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
CC:     Denis Lunev <den@virtuozzo.com>,
        Konstantin Khorenko <khorenko@virtuozzo.com>
Subject: [PATCH 0/3] rework netlink skb allocation
Thread-Topic: [PATCH 0/3] rework netlink skb allocation
Thread-Index: AQHVWM8Uc7CX8GVwdk2oKW/7+DjmdQ==
Date:   Thu, 22 Aug 2019 09:50:50 +0000
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Currently, userspace is able to initiate costly high-order allocation in=20
kernel sending large broadcast netlink message, which is considered=20
undesirable. At the same time, unicast message are safe in this regard,=20
because they uses vmalloc-ed memory.

This series introduces changes, that allow broadcast messages to be=20
allocated with vmalloc() as well as unicast.

Jan Dakinevich (3):
  skbuff: use kvfree() to deallocate head
  netlink: always use vmapped memory for skb data
  netlink: use generic skb_set_owner_r()

 include/linux/netlink.h   | 16 ----------------
 net/core/skbuff.c         |  2 +-
 net/ipv4/fib_frontend.c   |  2 +-
 net/netfilter/nfnetlink.c |  2 +-
 net/netlink/af_netlink.c  | 39 +++++++--------------------------------
 5 files changed, 10 insertions(+), 51 deletions(-)

--=20
2.1.4