1 // SPDX-License-Identifier: GPL-2.0 1
2
3 #define IO_POLL_ALLOC_CACHE_MAX 32
4
5 enum {
6 IO_APOLL_OK,
7 IO_APOLL_ABORTED,
8 IO_APOLL_READY
9 };
10
11 struct io_poll {
12 struct file *file;
13 struct wait_queue_head *head;
14 __poll_t events
15 int retrie
16 struct wait_queue_entry wait;
17 };
18
19 struct async_poll {
20 struct io_poll poll;
21 struct io_poll *double_poll;
22 };
23
24 /*
25 * Must only be called inside issue_flags & IO
26 * potentially other cases where we already "o
27 */
28 static inline void io_poll_multishot_retry(str
29 {
30 atomic_inc(&req->poll_refs);
31 }
32
33 int io_poll_add_prep(struct io_kiocb *req, con
34 int io_poll_add(struct io_kiocb *req, unsigned
35
36 int io_poll_remove_prep(struct io_kiocb *req,
37 int io_poll_remove(struct io_kiocb *req, unsig
38
39 struct io_cancel_data;
40 int io_poll_cancel(struct io_ring_ctx *ctx, st
41 unsigned issue_flags);
42 int io_arm_poll_handler(struct io_kiocb *req,
43 bool io_poll_remove_all(struct io_ring_ctx *ct
44 bool cancel_all);
45
46 void io_poll_task_func(struct io_kiocb *req, s
47
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.