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222a96b31c
The mutex smack_ipv6_lock is only used with the SMACK_IPV6_PORT_LABELING block but its definition is outside of the block. This leads to a defined-but-not-used warning on PREEMPT_RT. Moving smack_ipv6_lock down to the block where it is used where it used raises the question why is smk_ipv6_port_list read if nothing is added to it. Turns out, only smk_ipv6_port_check() is using it outside of an ifdef SMACK_IPV6_PORT_LABELING block. However two of three caller invoke smk_ipv6_port_check() from a ifdef block and only one is using __is_defined() macro which requires the function and smk_ipv6_port_list to be around. Put the lock and list inside an ifdef SMACK_IPV6_PORT_LABELING block to avoid the warning regarding unused mutex. Extend the ifdef-block to also cover smk_ipv6_port_check(). Make smack_socket_connect() use ifdef instead of __is_defined() to avoid complains about missing function. Cc: Casey Schaufler <casey@schaufler-ca.com> Cc: James Morris <jmorris@namei.org> Cc: "Serge E. Hallyn" <serge@hallyn.com> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Casey Schaufler <casey@schaufler-ca.com> |
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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.