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Rather than allocating a ptlrpc_thread for the stat-ahead thread, just use the task_struct provided by kthreads directly. As nothing ever waits for the sai_task, it must call do_exit() directly rather than simply return from the function. Also it cannot use kthread_should_stop() to know when to stop. There is one caller which can ask it to stop so we need a simple signaling mechanism. I've chosen to set ->sai_task to NULL when the thread should finish up. The thread notices this and cleans up and exits. lli_sa_lock is used to avoid races between waking up the process and the process exiting. Signed-off-by: NeilBrown <neilb@suse.com> 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.