This is already done for us internally by the signal machinery.
Link: http://lkml.kernel.org/r/20181116002713.8474-4-dave@stgolabs.net
Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
        fault = handle_mm_fault(vma, address, flags);
 
        /* If Pagefault was interrupted by SIGKILL, exit page fault "early" */
-       if (unlikely(fatal_signal_pending(current))) {
+       if (fatal_signal_pending(current)) {
                if ((fault & VM_FAULT_ERROR) && !(fault & VM_FAULT_RETRY))
                        up_read(&mm->mmap_sem);
                if (user_mode(regs))