io_uring: move nop into its own file

Signed-off-by: Jens Axboe <[email protected]>

io_uring/Makefile

@@ -2,5 +2,5 @@
 #
 # Makefile for io_uring
 
-obj-$(CONFIG_IO_URING)		+= io_uring.o xattr.o
+obj-$(CONFIG_IO_URING)		+= io_uring.o xattr.o nop.o
 obj-$(CONFIG_IO_WQ)		+= io-wq.o

io_uring/io_uring.c

@@ -93,6 +93,7 @@
 #include "io_uring.h"
 
 #include "xattr.h"
+#include "nop.h"
 
 #define IORING_MAX_ENTRIES	32768
 #define IORING_MAX_CQ_ENTRIES	(2 * IORING_MAX_ENTRIES)
@@ -4298,20 +4299,6 @@ static int io_splice(struct io_kiocb *req, unsigned int issue_flags)
 	return IOU_OK;
 }
 
-static int io_nop_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
-{
-	return 0;
-}
-
-/*
- * IORING_OP_NOP just posts a completion event, nothing else.
- */
-static int io_nop(struct io_kiocb *req, unsigned int issue_flags)
-{
-	io_req_set_res(req, 0, 0);
-	return IOU_OK;
-}
-
 static int io_msg_ring_prep(struct io_kiocb *req,
 			    const struct io_uring_sqe *sqe)
 {

io_uring/nop.c

@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/file.h>
+#include <linux/io_uring.h>
+
+#include <uapi/linux/io_uring.h>
+
+#include "io_uring_types.h"
+#include "io_uring.h"
+#include "nop.h"
+
+int io_nop_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
+{
+	return 0;
+}
+
+/*
+ * IORING_OP_NOP just posts a completion event, nothing else.
+ */
+int io_nop(struct io_kiocb *req, unsigned int issue_flags)
+{
+	io_req_set_res(req, 0, 0);
+	return IOU_OK;
+}

io_uring/nop.h

@@ -0,0 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
+
+int io_nop_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
+int io_nop(struct io_kiocb *req, unsigned int issue_flags);