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b454ec2922
The purpose of recalc_sigpending_and_wake() is not clear, it looks "obviously unneeded" because we are going to send the signal which can't be blocked or ignored. Add the comment to explain why we can't rely on send_signal_locked() and make this logic more simple/explicit. recalc_sigpending_and_wake() has no other users, it can die. In fact I think we don't even need signal_wake_up(), the target task must be either current or a TASK_TRACED child, otherwise the usage of siglock is not safe. But this needs another change. Link: https://lkml.kernel.org/r/20231120151649.GA15995@redhat.com Signed-off-by: Oleg Nesterov <oleg@redhat.com> Cc: Eric Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.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 Restructured Text 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.