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87cc7b0011
Same as aa_get_newest_cred_label_condref(). This avoids a bunch of work overall and allows the compiler to note when no clean up is necessary, allowing for tail calls. This in particular happens in apparmor_file_permission(), which manages to tail call aa_file_perm() 105 bytes in (vs a regular call 112 bytes in followed by branches to figure out if clean up is needed). Signed-off-by: Mateusz Guzik <mjguzik@gmail.com> Signed-off-by: John Johansen <john.johansen@canonical.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.