block/nbd: drop nbd_have_request()

.io_flush() is no longer called so drop nbd_have_request().  We cannot
drop in_flight since it is still used by other block/nbd.c code.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

diff --git a/block/nbd.c b/block/nbd.c
index 9c480b8f268e18d9dd88179148d88f5f13a5bf9e..f1619f9e1d15094a62737f764c580624c5895d5a 100644 (file)
--- a/block/nbd.c
+++ b/block/nbd.c
@@ -279,13 +279,6 @@ static void nbd_coroutine_start(BDRVNBDState *s, struct nbd_request *request)
     request->handle = INDEX_TO_HANDLE(s, i);
 }
 
-static int nbd_have_request(void *opaque)
-{
-    BDRVNBDState *s = opaque;
-
-    return s->in_flight > 0;
-}
-
 static void nbd_reply_ready(void *opaque)
 {
     BDRVNBDState *s = opaque;
@@ -342,7 +335,7 @@ static int nbd_co_send_request(BDRVNBDState *s, struct nbd_request *request,
     qemu_co_mutex_lock(&s->send_mutex);
     s->send_coroutine = qemu_coroutine_self();
     qemu_aio_set_fd_handler(s->sock, nbd_reply_ready, nbd_restart_write,
-                            nbd_have_request, s);
+                            NULL, s);
     if (qiov) {
         if (!s->is_unix) {
             socket_set_cork(s->sock, 1);
@@ -362,7 +355,7 @@ static int nbd_co_send_request(BDRVNBDState *s, struct nbd_request *request,
         rc = nbd_send_request(s->sock, request);
     }
     qemu_aio_set_fd_handler(s->sock, nbd_reply_ready, NULL,
-                            nbd_have_request, s);
+                            NULL, s);
     s->send_coroutine = NULL;
     qemu_co_mutex_unlock(&s->send_mutex);
     return rc;
@@ -439,7 +432,7 @@ static int nbd_establish_connection(BlockDriverState *bs)
      * kick the reply mechanism.  */
     qemu_set_nonblock(sock);
     qemu_aio_set_fd_handler(sock, nbd_reply_ready, NULL,
-                            nbd_have_request, s);
+                            NULL, s);
 
     s->sock = sock;
     s->size = size;