[PATCH v4 1/3] io_uring: use an enumeration for io_uring_register(2) opcodes

[Stefano Garzarella]

The enumeration allows us to keep track of the last
io_uring_register(2) opcode available.

Behaviour and opcodes names don't change.

Signed-off-by: Stefano Garzarella <sgarz...@redhat.com>
---
 include/uapi/linux/io_uring.h | 27 ++++++++++++++++-----------
 1 file changed, 16 insertions(+), 11 deletions(-)

diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h
index d65fde732518..cdc98afbacc3 100644
--- a/include/uapi/linux/io_uring.h
+++ b/include/uapi/linux/io_uring.h
@@ -255,17 +255,22 @@ struct io_uring_params {
 /*
  * io_uring_register(2) opcodes and arguments
  */
-#define IORING_REGISTER_BUFFERS                0
-#define IORING_UNREGISTER_BUFFERS      1
-#define IORING_REGISTER_FILES          2
-#define IORING_UNREGISTER_FILES                3
-#define IORING_REGISTER_EVENTFD                4
-#define IORING_UNREGISTER_EVENTFD      5
-#define IORING_REGISTER_FILES_UPDATE   6
-#define IORING_REGISTER_EVENTFD_ASYNC  7
-#define IORING_REGISTER_PROBE          8
-#define IORING_REGISTER_PERSONALITY    9
-#define IORING_UNREGISTER_PERSONALITY  10
+enum {
+       IORING_REGISTER_BUFFERS,
+       IORING_UNREGISTER_BUFFERS,
+       IORING_REGISTER_FILES,
+       IORING_UNREGISTER_FILES,
+       IORING_REGISTER_EVENTFD,
+       IORING_UNREGISTER_EVENTFD,
+       IORING_REGISTER_FILES_UPDATE,
+       IORING_REGISTER_EVENTFD_ASYNC,
+       IORING_REGISTER_PROBE,
+       IORING_REGISTER_PERSONALITY,
+       IORING_UNREGISTER_PERSONALITY,
+
+       /* this goes last */
+       IORING_REGISTER_LAST
+};
 
 struct io_uring_files_update {
        __u32 offset;
-- 
2.26.2