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 9int 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); 15 16void io_uring_unreg_ringfd(void); 17int io_ringfd_register(struct io_ring_ctx *ctx, void __user *__arg, 18 unsigned nr_args); 19int 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 */ 25static 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