98 static ssize_t read_mem(struct file *file, char __user *buf,  in read_mem()
102 	ssize_t read, sz;  in read_mem()
158 static ssize_t write_mem(struct file *file, const char __user *buf,  in write_mem()
162 	ssize_t written, sz;  in write_mem()
379 static ssize_t read_kmem(struct file *file, char __user *buf,  in read_kmem()
383 	ssize_t low_count, read, sz;  in read_kmem()
455 static ssize_t do_write_kmem(unsigned long p, const char __user *buf,  in do_write_kmem()
458 	ssize_t written, sz;  in do_write_kmem()
506 static ssize_t write_kmem(struct file *file, const char __user *buf,  in write_kmem()
510 	ssize_t wrote = 0;  in write_kmem()
511 	ssize_t virtr = 0;  in write_kmem()
556 static ssize_t read_port(struct file *file, char __user *buf,  in read_port()
574 static ssize_t write_port(struct file *file, const char __user *buf,  in write_port()
598 static ssize_t read_null(struct file *file, char __user *buf,  in read_null()
604 static ssize_t write_null(struct file *file, const char __user *buf,  in write_null()
610 static ssize_t read_iter_null(struct kiocb *iocb, struct iov_iter *to)  in read_iter_null()
615 static ssize_t write_iter_null(struct kiocb *iocb, struct iov_iter *from)  in write_iter_null()
628 static ssize_t splice_write_null(struct pipe_inode_info *pipe, struct file *out,  in splice_write_null()
634 static ssize_t read_iter_zero(struct kiocb *iocb, struct iov_iter *iter)  in read_iter_zero()
664 static ssize_t write_full(struct file *file, const char __user *buf,  in write_full()