1 // SPDX-License-Identifier: GPL-2.0 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, bool submitter); 13 void io_uring_clean_tctx(struct io_uring_task *tctx); 14 15 void io_uring_unreg_ringfd(void); 16 int io_ringfd_register(struct io_ring_ctx *ctx, void __user *__arg, 17 unsigned nr_args); 18 int io_ringfd_unregister(struct io_ring_ctx *ctx, void __user *__arg, 19 unsigned nr_args); 20 21 /* 22 * Note that this task has used io_uring. We use it for cancelation purposes. 23 */ 24 static inline int io_uring_add_tctx_node(struct io_ring_ctx *ctx) 25 { 26 struct io_uring_task *tctx = current->io_uring; 27 28 if (likely(tctx && tctx->last == ctx)) 29 return 0; 30 return __io_uring_add_tctx_node(ctx, true); 31 } 32