61 	unsigned	tail;  member
158 		unsigned	tail;  member
577 	ring->head = ring->tail = 0;  in aio_setup_ring()
991                                   unsigned tail)  in refill_reqs_available()  argument
997 	if (head <= tail)  in refill_reqs_available()
998 		events_in_ring = tail - head;  in refill_reqs_available()
1000 		events_in_ring = ctx->nr_events - (head - tail);  in refill_reqs_available()
1039 		refill_reqs_available(ctx, head, ctx->tail);  in user_refill_reqs_available()
1127 	unsigned tail, pos, head;  in aio_complete()  local
1137 	tail = ctx->tail;  in aio_complete()
1138 	pos = tail + AIO_EVENTS_OFFSET;  in aio_complete()
1140 	if (++tail >= ctx->nr_events)  in aio_complete()
1141 		tail = 0;  in aio_complete()
1151 	pr_debug("%p[%u]: %p: %p %Lx %Lx %Lx\n", ctx, tail, iocb,  in aio_complete()
1160 	ctx->tail = tail;  in aio_complete()
1164 	ring->tail = tail;  in aio_complete()
1170 		refill_reqs_available(ctx, head, tail);  in aio_complete()
1173 	pr_debug("added to ring %p at [%u]\n", iocb, tail);  in aio_complete()
1211 	unsigned head, tail, pos;  in aio_read_events_ring()  local
1227 	tail = ring->tail;  in aio_read_events_ring()
1236 	pr_debug("h%u t%u m%u\n", head, tail, ctx->nr_events);  in aio_read_events_ring()
1238 	if (head == tail)  in aio_read_events_ring()
1242 	tail %= ctx->nr_events;  in aio_read_events_ring()
1249 		avail = (head <= tail ?  tail : ctx->nr_events) - head;  in aio_read_events_ring()
1250 		if (head == tail)  in aio_read_events_ring()
1280 	pr_debug("%li  h%u t%u\n", ret, head, tail);  in aio_read_events_ring()