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); 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 */ io_uring_add_tctx_node(struct io_ring_ctx * ctx)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