swap_syscall_lock 230 uvm/uvm_swap.c struct rwlock swap_syscall_lock = RWLOCK_INITIALIZER("swplk"); swap_syscall_lock 640 uvm/uvm_swap.c rw_enter_write(&swap_syscall_lock); swap_syscall_lock 879 uvm/uvm_swap.c rw_exit_write(&swap_syscall_lock);