164 struct async_list {  struct
261 	struct async_list	pending_async[2];
1273 static inline bool io_should_merge(struct async_list *al, struct kiocb *kiocb)  in io_should_merge()
1303 	struct async_list *async_list = &req->ctx->pending_async[rw];  in io_async_list_note()  local
1307 	if (io_should_merge(async_list, kiocb)) {  in io_async_list_note()
1316 		if (async_list->io_len + len <= max_bytes) {  in io_async_list_note()
1318 			async_list->io_len += len;  in io_async_list_note()
1320 			async_list->file = NULL;  in io_async_list_note()
1325 	if (async_list->file != filp) {  in io_async_list_note()
1326 		async_list->io_start = kiocb->ki_pos;  in io_async_list_note()
1327 		async_list->io_len = len;  in io_async_list_note()
1328 		async_list->file = filp;  in io_async_list_note()
2121 static struct async_list *io_async_list_from_sqe(struct io_ring_ctx *ctx,  in io_async_list_from_sqe()
2149 	struct async_list *async_list;  in io_sq_wq_submit_work()  local
2154 	async_list = io_async_list_from_sqe(ctx, req->submit.sqe);  in io_sq_wq_submit_work()
2208 		if (!async_list)  in io_sq_wq_submit_work()
2216 		if (list_empty(&async_list->list))  in io_sq_wq_submit_work()
2220 		spin_lock(&async_list->lock);  in io_sq_wq_submit_work()
2221 		if (list_empty(&async_list->list)) {  in io_sq_wq_submit_work()
2222 			spin_unlock(&async_list->lock);  in io_sq_wq_submit_work()
2225 		list_splice_init(&async_list->list, &req_list);  in io_sq_wq_submit_work()
2226 		spin_unlock(&async_list->lock);  in io_sq_wq_submit_work()
2237 	if (async_list) {  in io_sq_wq_submit_work()
2238 		ret = atomic_dec_return(&async_list->cnt);  in io_sq_wq_submit_work()
2239 		while (!ret && !list_empty(&async_list->list)) {  in io_sq_wq_submit_work()
2240 			spin_lock(&async_list->lock);  in io_sq_wq_submit_work()
2241 			atomic_inc(&async_list->cnt);  in io_sq_wq_submit_work()
2242 			list_splice_init(&async_list->list, &req_list);  in io_sq_wq_submit_work()
2243 			spin_unlock(&async_list->lock);  in io_sq_wq_submit_work()
2251 			ret = atomic_dec_return(&async_list->cnt);  in io_sq_wq_submit_work()
2268 static bool io_add_to_prev_work(struct async_list *list, struct io_kiocb *req)  in io_add_to_prev_work()
2363 			struct async_list *list;  in __io_queue_sqe()