1 // SPDX-License-Identifier: GPL-2.0 2 #include <linux/kernel.h> 3 #include <linux/errno.h> 4 #include <linux/fs.h> 5 #include <linux/file.h> 6 #include <linux/io_uring.h> 7 8 #include <uapi/linux/io_uring.h> 9 10 #include "io_uring.h" 11 #include "nop.h" 12 13 int io_nop_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) 14 { 15 if (READ_ONCE(sqe->rw_flags)) 16 return -EINVAL; 17 return 0; 18 } 19 20 /* 21 * IORING_OP_NOP just posts a completion event, nothing else. 22 */ 23 int io_nop(struct io_kiocb *req, unsigned int issue_flags) 24 { 25 io_req_set_res(req, 0, 0); 26 return IOU_OK; 27 } 28