Hi Greg,
On 26/08/2024 14:05, gregkh@linuxfoundation.org wrote:
The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
Thank you for the notification!
(...)
------------------ original commit in Linus's tree ------------------
From f448451aa62d54be16acb0034223c17e0d12bc69 Mon Sep 17 00:00:00 2001 From: "Matthieu Baerts (NGI0)" matttbe@kernel.org Date: Mon, 19 Aug 2024 21:45:25 +0200 Subject: [PATCH] mptcp: pm: remove mptcp_pm_remove_subflow()
This helper is confusing. It is in pm.c, but it is specific to the in-kernel PM and it cannot be used by the userspace one. Also, it simply calls one in-kernel specific function with the PM lock, while the similar mptcp_pm_remove_addr() helper requires the PM lock.
What's left is the pr_debug(), which is not that useful, because a similar one is present in the only function called by this helper:
mptcp_pm_nl_rm_subflow_received()
After these modifications, this helper can be marked as 'static', and the lock can be taken only once in mptcp_pm_flush_addrs_and_subflows().
Note that it is not a bug fix, but it will help backporting the following commits.
It was helping with newer versions, but not here in v5.15, because other fixes have not been taken. We don't need this patch then.
Cheers, Matt