[PATCH 0/1] ipset performance regression in swap fix

[Jozsef Kadlecsik <kadlec@netfilter.org>]

Hi Pablo,

Please consider to apply the next patch to your nf tree. It should be applied
to all stable branches to which the patch "netfilter: ipset: fix race condition
between swap/destroy and kernel side add/del/test", commit 28628fa9 was added.

* The synchronize_rcu() call added to the swap function to prevent the race
  condition makes it too slow. The race can be prevented by using call_rcu()
  in the destroy function instead. However those function calls cannot wait, 
  so cancelling garbage collectors are separated to individual function calls
  to execute them first, outside of the call_rcu() functions.

Best regards,
Jozsef

The following changes since commit ac631873c9e7a50d2a8de457cfc4b9f86666403e:

  net: ethernet: cortina: Drop TSO support (2024-01-07 16:05:00 +0000)

are available in the Git repository at:

  git://blackhole.kfki.hu/nf fdb8e12cc2ccb5e06a

for you to fetch changes up to fdb8e12cc2ccb5e06af6bcd68ba578b60807bcf6:

  netfilter: ipset: fix performance regression in swap operation (2024-01-29 10:47:14 +0100)

----------------------------------------------------------------
Jozsef Kadlecsik (1):
      netfilter: ipset: fix performance regression in swap operation

 include/linux/netfilter/ipset/ip_set.h  |  4 ++++
 net/netfilter/ipset/ip_set_bitmap_gen.h | 14 ++++++++++---
 net/netfilter/ipset/ip_set_core.c       | 37 +++++++++++++++++++++++++--------
 net/netfilter/ipset/ip_set_hash_gen.h   | 15 ++++++++++---
 net/netfilter/ipset/ip_set_list_set.c   | 13 +++++++++---
 5 files changed, 65 insertions(+), 18 deletions(-)