1 files changed, 1 insertions, 0 deletions
diff --git a/linux-aio.c b/linux-aio.c
index 5fd39327b3..5265a029b2 100644
--- a/linux-aio.c
+++ b/linux-aio.c
@@ -181,6 +181,7 @@ BlockDriverAIOCB *laio_submit(BlockDriverState *bs, void *aio_ctx, int fd,
     case QEMU_AIO_READ:
         io_prep_preadv(iocbs, fd, qiov->iov, qiov->niov, offset);
 	break;
+    /* Currently Linux kernel does not support other operations */
     default:
         fprintf(stderr, "%s: invalid AIO request type 0x%x.\n",
                         __func__, type);