projects/linux·blob master · refs

34 lines · 1.0 KiB

1// SPDX-License-Identifier: GPL-2.0
2
3struct io_tctx_node {
4 struct list_head ctx_node;
5 struct task_struct *task;
6 struct io_ring_ctx *ctx;
7};
8
9struct io_uring_task *io_uring_alloc_task_context(struct task_struct *task,
10 struct io_ring_ctx *ctx);
11void io_uring_del_tctx_node(unsigned long index);
12int __io_uring_add_tctx_node(struct io_ring_ctx *ctx);
13int __io_uring_add_tctx_node_from_submit(struct io_ring_ctx *ctx);
14void io_uring_clean_tctx(struct io_uring_task *tctx);
15void io_uring_free_tctx(struct task_struct *tsk);
16
17void io_uring_unreg_ringfd(void);
18int io_ringfd_register(struct io_ring_ctx *ctx, void __user *__arg,
19 unsigned nr_args);
20int io_ringfd_unregister(struct io_ring_ctx *ctx, void __user *__arg,
21 unsigned nr_args);
22
23/*
24 * Note that this task has used io_uring. We use it for cancelation purposes.
25 */
26static inline int io_uring_add_tctx_node(struct io_ring_ctx *ctx)
27{
28 struct io_uring_task *tctx = current->io_uring;
29
30 if (likely(tctx && tctx->last == ctx))
31 return 0;
32
33 return __io_uring_add_tctx_node_from_submit(ctx);
34}