36  * @tail: tail sequence of the local ring array (to append at)
48  * head and tail, typed as uint32_t: [0, 2^32), so only lower bits (mask)
49  * of head and tail are used as the actual position in the ring array. In
55 	uint32_t            tail;  member
195 	uint32_t head, tail;  in __objpool_try_add_slot()  local
197 	/* loading tail and head as a local snapshot, tail first */  in __objpool_try_add_slot()
198 	tail = READ_ONCE(slot->tail);  in __objpool_try_add_slot()
203 		WARN_ON_ONCE(tail - head > pool->nr_objs);  in __objpool_try_add_slot()
204 	} while (!try_cmpxchg_acquire(&slot->tail, &tail, tail + 1));  in __objpool_try_add_slot()
206 	/* now the tail position is reserved for the given obj */  in __objpool_try_add_slot()
207 	WRITE_ONCE(slot->entries[tail & slot->mask], obj);  in __objpool_try_add_slot()
209 	smp_store_release(&slot->last, tail + 1);  in __objpool_try_add_slot()