574 static ssize_t kernel_readv(struct file *file, const struct iovec *vec,  in kernel_readv()  argument
584 	res = vfs_readv(file, (const struct iovec __user *)vec, vlen, &pos);  in kernel_readv()
615 	struct iovec *vec, __vec[PIPE_DEF_BUFFERS];  in default_file_splice_read()  local
633 	vec = __vec;  in default_file_splice_read()
635 		vec = kmalloc(spd.nr_pages_max * sizeof(struct iovec), GFP_KERNEL);  in default_file_splice_read()
636 		if (!vec)  in default_file_splice_read()
652 		vec[i].iov_base = (void __user *) page_address(page);  in default_file_splice_read()
653 		vec[i].iov_len = this_len;  in default_file_splice_read()
660 	res = kernel_readv(in, vec, spd.nr_pages, *ppos);  in default_file_splice_read()
672 		this_len = min_t(size_t, vec[i].iov_len, res);  in default_file_splice_read()
689 	if (vec != __vec)  in default_file_splice_read()
690 		kfree(vec);  in default_file_splice_read()