ubd_mutex 101 arch/um/drivers/ubd_kern.c static DEFINE_MUTEX(ubd_mutex); /* replaces BKL, might not be needed */ ubd_mutex 1219 arch/um/drivers/ubd_kern.c mutex_lock(&ubd_mutex); ubd_mutex 1238 arch/um/drivers/ubd_kern.c mutex_unlock(&ubd_mutex); ubd_mutex 1246 arch/um/drivers/ubd_kern.c mutex_lock(&ubd_mutex); ubd_mutex 1249 arch/um/drivers/ubd_kern.c mutex_unlock(&ubd_mutex);