162306a36Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0 262306a36Sopenharmony_ci 362306a36Sopenharmony_cistruct io_tctx_node { 462306a36Sopenharmony_ci struct list_head ctx_node; 562306a36Sopenharmony_ci struct task_struct *task; 662306a36Sopenharmony_ci struct io_ring_ctx *ctx; 762306a36Sopenharmony_ci}; 862306a36Sopenharmony_ci 962306a36Sopenharmony_ciint io_uring_alloc_task_context(struct task_struct *task, 1062306a36Sopenharmony_ci struct io_ring_ctx *ctx); 1162306a36Sopenharmony_civoid io_uring_del_tctx_node(unsigned long index); 1262306a36Sopenharmony_ciint __io_uring_add_tctx_node(struct io_ring_ctx *ctx); 1362306a36Sopenharmony_ciint __io_uring_add_tctx_node_from_submit(struct io_ring_ctx *ctx); 1462306a36Sopenharmony_civoid io_uring_clean_tctx(struct io_uring_task *tctx); 1562306a36Sopenharmony_ci 1662306a36Sopenharmony_civoid io_uring_unreg_ringfd(void); 1762306a36Sopenharmony_ciint io_ringfd_register(struct io_ring_ctx *ctx, void __user *__arg, 1862306a36Sopenharmony_ci unsigned nr_args); 1962306a36Sopenharmony_ciint io_ringfd_unregister(struct io_ring_ctx *ctx, void __user *__arg, 2062306a36Sopenharmony_ci unsigned nr_args); 2162306a36Sopenharmony_ci 2262306a36Sopenharmony_ci/* 2362306a36Sopenharmony_ci * Note that this task has used io_uring. We use it for cancelation purposes. 2462306a36Sopenharmony_ci */ 2562306a36Sopenharmony_cistatic inline int io_uring_add_tctx_node(struct io_ring_ctx *ctx) 2662306a36Sopenharmony_ci{ 2762306a36Sopenharmony_ci struct io_uring_task *tctx = current->io_uring; 2862306a36Sopenharmony_ci 2962306a36Sopenharmony_ci if (likely(tctx && tctx->last == ctx)) 3062306a36Sopenharmony_ci return 0; 3162306a36Sopenharmony_ci 3262306a36Sopenharmony_ci return __io_uring_add_tctx_node_from_submit(ctx); 3362306a36Sopenharmony_ci} 34