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| author | Eric Dumazet <edumazet@google.com> | 2024-02-09 15:30:56 +0000 |
|---|---|---|
| committer | Sasha Levin <sashal@kernel.org> | 2024-03-26 18:16:42 -0400 |
| commit | 5da9a218340a2bc804dc4327e5804392e24a0b88 (patch) | |
| tree | 94457f6c9cd3e9891e3dc57170f50ca38e66ef59 /net | |
| parent | 116cc80f47b29edcba609ad92be1ad83d1cedcd0 (diff) | |
| download | linux-stable-5da9a218340a2bc804dc4327e5804392e24a0b88.tar.gz linux-stable-5da9a218340a2bc804dc4327e5804392e24a0b88.tar.bz2 linux-stable-5da9a218340a2bc804dc4327e5804392e24a0b88.zip | |
ipv6: mcast: remove one synchronize_net() barrier in ipv6_mc_down()
[ Upstream commit 17ef8efc00b34918b966388b2af0993811895a8c ]
As discussed in the past (commit 2d3916f31891 ("ipv6: fix skb drops
in igmp6_event_query() and igmp6_event_report()")) I think the
synchronize_net() call in ipv6_mc_down() is not needed.
Under load, synchronize_net() can last between 200 usec and 5 ms.
KASAN seems to agree as well.
Fixes: f185de28d9ae ("mld: add new workqueues for process mld events")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Taehee Yoo <ap420073@gmail.com>
Cc: Cong Wang <xiyou.wangcong@gmail.com>
Cc: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv6/mcast.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c index bc6e0a0bad3c..76ee1615ff2a 100644 --- a/net/ipv6/mcast.c +++ b/net/ipv6/mcast.c @@ -2719,7 +2719,6 @@ void ipv6_mc_down(struct inet6_dev *idev) /* Should stop work after group drop. or we will * start work again in mld_ifc_event() */ - synchronize_net(); mld_query_stop_work(idev); mld_report_stop_work(idev); |