Only enumerates option for devices that support it. Since QAPI schema
supports io_uring, which is the actual name of the Linux API, it is
preferred over io-uring.

Signed-off-by: Aarushi Mehta <mehta.aaru20@gmail.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 qapi/block-core.json | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/qapi/block-core.json b/qapi/block-core.json
index 0d43d4f37c..3dc93b483f 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -2792,11 +2792,13 @@
 #
 # @threads:     Use qemu's thread pool
 # @native:      Use native AIO backend (only Linux and Windows)
+# @io_uring:    Use linux io_uring (since 4.2)
 #
 # Since: 2.9
 ##
 { 'enum': 'BlockdevAioOptions',
-  'data': [ 'threads', 'native' ] }
+  'data': [ 'threads', 'native',
+            { 'name': 'io_uring', 'if': 'defined(CONFIG_LINUX_IO_URING)' } ] }
 
 ##
 # @BlockdevCacheOptions:
-- 
2.21.0