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ec6f613ef3
Use !try_cmpxchg() instead of cmpxchg(*ptr, old, new) != old. The x86 CMPXCHG instruction returns success in the ZF flag, so this change saves a compare after CMPXCHG. No functional change intended. Signed-off-by: Uros Bizjak <ubizjak@gmail.com> Link: https://lore.kernel.org/20250811132326.620521-1-ubizjak@gmail.com Reviewed-by: Jan Kara <jack@suse.cz> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Christian Brauner <brauner@kernel.org> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Christian Brauner <brauner@kernel.org>
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.