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The reference count in kernfs_node structure is treated like a rwsem by using lockdep instrumentation code. The lockdep name, however, is still "s_active" which is carried over from the old sysfs code. As s_active is no longer the variable name, its use may confuse users on where the lock is when it is reported by lockdep. So it is changed to "kn->count" which is how this variable is normally referenced in kernfs code. Signed-off-by: Waiman Long <longman@redhat.com> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.