[PATCH] Fixing mlockall & PROT_NONE

This is the minimal change to make "mlockall()" not complain about
the occasional PROT_NONE area.

PROT_NONE is commonly used on x86-64, and is no reason to not lock
in the rest of the mappings into memory.

mm/mlock.c

@@ -154,9 +154,9 @@ static int do_mlockall(int flags)
 		newflags = vma->vm_flags | VM_LOCKED;
 		if (!(flags & MCL_CURRENT))
 			newflags &= ~VM_LOCKED;
-		error = mlock_fixup(vma, vma->vm_start, vma->vm_end, newflags);
-		if (error)
-			break;
+
+		/* Ignore errors */
+		mlock_fixup(vma, vma->vm_start, vma->vm_end, newflags);
 	}
 	return error;
 }