Hello:
This patch was applied to netdev/net-next.git (refs/heads/master):
On Wed, 4 Aug 2021 10:55:56 +0300 you wrote:
> SOCK_SNDBUF_LOCK and SOCK_RCVBUF_LOCK flags disable automatic socket
> buffers adjustment done by kernel (see tcp_fixup_rcvbuf() and
> tcp_sndbuf_expand()). If we've just created a new socket this adjustment
> is enabled on it, but if one changes the socket buffer size by
> setsockopt(SO_{SND,RCV}BUF*) it becomes disabled.
>
> CRIU needs to call setsockopt(SO_{SND,RCV}BUF*) on each socket on
> restore as it first needs to increase buffer sizes for packet queues
> restore and second it needs to restore back original buffer sizes. So
> after CRIU restore all sockets become non-auto-adjustable, which can
> decrease network performance of restored applications significantly.
>
> [...]
Here is the summary with links:
- [v3] sock: allow reading and changing sk_userlocks with setsockopt
https://git.kernel.org/netdev/net-next/c/04190bf8944d
You are awesome, thank you!
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