// SPDX-License-Identifier: GPL-2.0 struct io_sq_data {	refcount_t		refs;	atomic_t		park_pending;	struct mutex		lock; 	/* ctx's that are using this sqd */	struct list_head	ctx_list; 	struct task_struct __rcu *thread;	struct wait_queue_head	wait; 	unsigned		sq_thread_idle;	int			sq_cpu;	pid_t			task_pid;	pid_t			task_tgid; 	u64			work_time;	unsigned long		state;	struct completion	exited;}; int io_sq_offload_create(struct io_ring_ctx *ctx, struct io_uring_params *p);void io_sq_thread_finish(struct io_ring_ctx *ctx);void io_sq_thread_stop(struct io_sq_data *sqd);void io_sq_thread_park(struct io_sq_data *sqd);void io_sq_thread_unpark(struct io_sq_data *sqd);void io_put_sq_data(struct io_sq_data *sqd);void io_sqpoll_wait_sq(struct io_ring_ctx *ctx);int io_sqpoll_wq_cpu_affinity(struct io_ring_ctx *ctx, cpumask_var_t mask);u64 io_sq_cpu_usec(struct task_struct *tsk); static inline struct task_struct *sqpoll_task_locked(struct io_sq_data *sqd){	return rcu_dereference_protected(sqd->thread,					 lockdep_is_held(&sqd->lock));}