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