title: Is it possible to call sys_mprotect from a kernel module
body: <p>I'm writing a kernel module that needs to change page permissions for a task. Normally, the task would just call mprotect and set the permissions. As I understand Linux kernel has <code>sys_mprotect</code>, which performs the actual system call. </p>
  
  <p>Is it possible that my Linux kernel module calls <code>sys_mprotect</code>? I cannot seem to find a kernel API that allows that. </p>