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b7fd0fa0ea
This commit doesn't change the logic of SWN. Add dummy implementation of SWN functions when SWN is disabled instead of using ifdef sections. The dummy functions get optimized out, this leads to clearer code and compile time type-checking regardless of config options with no runtime penalty. Leave the simple ifdefs section as-is. A single bitfield (bool foo:1) on its own will use up one int. Move tcon->use_witness out of ifdefs with the other tcon bitfields. Signed-off-by: Aurelien Aptel <aaptel@suse.com> Reviewed-by: Samuel Cabrero <scabrero@suse.de> Signed-off-by: Steve French <stfrench@microsoft.com>
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.