Hi! 1e3d8715 (uml: kill big kernel lock) breaks um build. arch/um/drivers/ubd_kern.c: In function 'ubd_open': arch/um/drivers/ubd_kern.c:1104: error: 'ubd_mutex' undeclared (first use in this function) arch/um/drivers/ubd_kern.c:1104: error: (Each undeclared identifier is reported only once arch/um/drivers/ubd_kern.c:1104: error: for each function it appears in.) arch/um/drivers/ubd_kern.c: In function 'ubd_release': arch/um/drivers/ubd_kern.c:1131: error: 'ubd_mutex' undeclared (first use in this function) make[1]: *** [arch/um/drivers/ubd_kern.o] Error 1 make: *** [arch/um/drivers] Error 2 It seems you forgot to define ubd_mutex in ubd_kern.c. Thanks, //richard -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html