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c8758ad005
Invert the meaning of the GLF_INITIAL flag: right now, when GLF_INITIAL is set, a DLM lock exists and we have a valid identifier for it; when GLF_INITIAL is cleared, no DLM lock exists (yet). This is confusing. In addition, it makes more sense to highlight the exceptional case (i.e., no DLM lock exists yet) in glock dumps and trace points than to highlight the common case. To avoid confusion between the "old" and the "new" meaning of the flag, use 'a' instead of 'I' to represent the flag. For improved code consistency, check if the GLF_INITIAL flag is cleared to determine whether a DLM lock exists instead of checking if the lock identifier is non-zero. Document what the flag is used for. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.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 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.