The function in question finds the task by its pid_t in an initial pid namespace (init_pid_ns). This is no longer safe to simply call it, since the current task may be in a pid namespace and it may return the wrong task.
The proper behavior is to call the find_task_by_vpid() if the caller is sure, that the target task lives in the same namespace as he is, or the find_task_by_pid_ns() and specify the namespace to find a task in. Since the find_task_by_pid() is a well-known API call, and its semantics changes, I think that it's better to mark it as deprecated to warn people, that the result may differ from what they expect and force them to use proper call. Another case is to store the pointer to the struct pid of a desired task and later call the pid_task() to get the task itself. So this set just fixes the existing users of find_task_by_pid(). The only one will be left - the UML mconsole, but I'm completely lost in this code, finding out what kind of pid is passed in the mconsole_stack() call :( Singed-off-by: Pavel Emelyanov <[EMAIL PROTECTED]> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
