events_in_ring    960 fs/aio.c       	unsigned events_in_ring, completed;
events_in_ring    965 fs/aio.c       		events_in_ring = tail - head;
events_in_ring    967 fs/aio.c       		events_in_ring = ctx->nr_events - (head - tail);
events_in_ring    970 fs/aio.c       	if (events_in_ring < completed)
events_in_ring    971 fs/aio.c       		completed -= events_in_ring;