t/io_uring: enable support for registered buffers for passthrough

[fio.git] / os / linux / io_uring.h

diff --git a/os/linux/io_uring.h b/os/linux/io_uring.h
index 6604e7360749909732724f934bce74009be00c3e..c7a24ad88d63dc8220076a153fe724858198ab3e 100644 (file)
--- a/os/linux/io_uring.h
+++ b/os/linux/io_uring.h
@@ -46,6 +46,7 @@ struct io_uring_sqe {
                __u32           rename_flags;
                __u32           unlink_flags;
                __u32           hardlink_flags;
+               __u32           uring_cmd_flags;
        };
        __u64   user_data;      /* data to be passed back at completion time */
        /* pack this to avoid bogus arm OABI complaints */
@@ -197,6 +198,13 @@ enum {
        IORING_OP_LAST,
 };
 
+/*
+ * sqe->uring_cmd_flags
+ * IORING_URING_CMD_FIXED      use registered buffer; pass thig flag
+ *                             along with setting sqe->buf_index.
+ */
+#define IORING_URING_CMD_FIXED (1U << 0)
+
 /*
  * sqe->fsync_flags
  */