Hi, I have a question about "DEFINE_MUTEX(lguest_lock)" location. Since lguest_lock defines on drivers/lguest/core.c But it uses only on drivers/lguest/lguest_user.c I think it should be move the definition location on lguest_lock, from core.c to lguest_user.c. Is there any reason DEFINE_MUTEX on core.c? Thanks Atsushi SAKAI