old_npgs 319 net/xdp/xdp_umem.c unsigned long lock_limit, new_npgs, old_npgs; old_npgs 328 net/xdp/xdp_umem.c old_npgs = atomic_long_read(&umem->user->locked_vm); old_npgs 329 net/xdp/xdp_umem.c new_npgs = old_npgs + umem->npgs; old_npgs 335 net/xdp/xdp_umem.c } while (atomic_long_cmpxchg(&umem->user->locked_vm, old_npgs, old_npgs 336 net/xdp/xdp_umem.c new_npgs) != old_npgs);