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f7071db2fe
Unlike sys_clone(), these helpers have only in kernel users which should pass the correct "flags" argument. lower_32_bits(flags) just adds the unnecessary confusion and doesn't allow to use the CLONE_ flags which don't fit into 32 bits. create_io_thread() looks especially confusing because: - "flags" is a compile-time constant, so lower_32_bits() simply has no effect - .exit_signal = (lower_32_bits(flags) & CSIGNAL) is harmless but doesn't look right, copy_process(CLONE_THREAD) will ignore this argument anyway. None of these helpers actually need CLONE_UNTRACED or "& ~CSIGNAL", but their presence does not add any confusion and improves code clarity. Link: https://lkml.kernel.org/r/20250820163946.GA18549@redhat.com Signed-off-by: Oleg Nesterov <oleg@redhat.com> Reviewed-by: Jens Axboe <axboe@kernel.dk> Cc: Christian Brauner <brauner@kernel.org> Cc: Kees Cook <kees@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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| drivers | ||
| fs | ||
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| io_uring | ||
| ipc | ||
| kernel | ||
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| virt | ||
| .clang-format | ||
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| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
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| .gitignore | ||
| .mailmap | ||
| .pylintrc | ||
| .rustfmt.toml | ||
| COPYING | ||
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| README | ||
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.