On Thu, May 02, 2019 at 05:46:08PM -0400, Joel Savitz wrote: > > Won't be possible to use put_user here? Something like > > > > static int prctl_get_tasksize(unsigned long __user *uaddr) > > { > > return put_user(TASK_SIZE, uaddr) ? -EFAULT : 0; > > } > > What would be the benefit of using put_user() over copy_to_user() in > this context?
It is a common pattern to use put_user with native types, where copy_to_user more biased for composed types transfer.