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9771a96a7a
get_retrans() interface of the burst packet scheduler invokes a sleeping function mptcp_pm_subflow_chk_stale(), which calls __lock_sock_fast(). So get_retrans() interface should be set with BPF_F_SLEEPABLE flag in BPF. But get_send() interface of this scheduler can't be set with BPF_F_SLEEPABLE flag since it's invoked in ack_update_msk() under mptcp data lock. So this patch has to split get_subflow() interface of packet scheduer into two interfaces: get_send() and get_retrans(). Then we can set get_retrans() interface alone with BPF_F_SLEEPABLE flag. Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn> Reviewed-by: Mat Martineau <martineau@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20250221-net-next-mptcp-pm-misc-cleanup-3-v1-8-2b70ab1cee79@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.