Jiazi Li fed307b67c kthread: update comment for __to_kthread
With commit 343f4c49f2 ("kthread: Don't allocate kthread_struct for init
and umh") and commit 753550eb0c ("fork: Explicitly set PF_KTHREAD"), umh
task no longer have struct kthread and PF_KTHREAD flag.

Update the comment to describe what the current rules are to detect
is something is a kthread.

Link: https://lkml.kernel.org/r/20250620100801.23185-1-jqqlijiazi@gmail.com
Signed-off-by: Jiazi Li <jqqlijiazi@gmail.com>
Signed-off-by: mingzhu.wang <mingzhu.wang@transsion.com>
Suggested-by Eric W . Biederman <ebiederm@xmission.com>
Reviewed-by: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-07-09 22:57:55 -07:00
2025-07-09 22:57:51 -07:00
2022-09-28 09:02:20 +02:00
2025-06-21 07:34:28 -07:00
2025-02-19 14:53:27 -07:00
2025-07-06 14:10:26 -07:00
2024-03-18 03:36:32 -06:00

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.
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