1 // SPDX-License-Identifier: GPL-2.0
4 * Arbitrary limit, can be raised if need be
6 #define IO_RINGFD_REG_MAX 16
12 struct wait_queue_head wait;
13 const struct io_ring_ctx *last;
15 struct percpu_counter inflight;
16 atomic_t inflight_tracked;
20 struct io_wq_work_list task_list;
21 struct io_wq_work_list prio_task_list;
22 struct callback_head task_work;
25 struct file *registered_rings[IO_RINGFD_REG_MAX];
29 struct list_head ctx_node;
30 struct task_struct *task;
31 struct io_ring_ctx *ctx;
34 int io_uring_alloc_task_context(struct task_struct *task,
35 struct io_ring_ctx *ctx);
36 void io_uring_del_tctx_node(unsigned long index);
37 int __io_uring_add_tctx_node(struct io_ring_ctx *ctx, bool submitter);
38 void io_uring_clean_tctx(struct io_uring_task *tctx);
40 void io_uring_unreg_ringfd(void);
41 int io_ringfd_register(struct io_ring_ctx *ctx, void __user *__arg,
43 int io_ringfd_unregister(struct io_ring_ctx *ctx, void __user *__arg,
47 * Note that this task has used io_uring. We use it for cancelation purposes.
49 static inline int io_uring_add_tctx_node(struct io_ring_ctx *ctx)
51 struct io_uring_task *tctx = current->io_uring;
53 if (likely(tctx && tctx->last == ctx))
55 return __io_uring_add_tctx_node(ctx, true);