rwsem_can_spin_on_owner 1010 kernel/locking/rwsem.c if (!rwsem_can_spin_on_owner(sem, RWSEM_RD_NONSPINNABLE)) rwsem_can_spin_on_owner 1149 kernel/locking/rwsem.c if (rwsem_can_spin_on_owner(sem, RWSEM_WR_NONSPINNABLE) &&