build rhel91 fix (#324)

src/configure-tests/feature-tests/gd_owns_queue.c

@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+/*
+ * Copyright (C) 2023 Datto Inc.
+ */
+
+#include "includes.h"
+
+MODULE_LICENSE("GPL");
+
+static inline void dummy(void){
+    struct gendisk *sd_gd; = NULL;
+    set_bit(GD_OWNS_QUEUE, &sd_gd->state);
+}

src/tracer.c

@@ -1035,8 +1035,9 @@ static int __tracer_setup_snap(struct snap_device *dev, unsigned int minor,
         LOG_DEBUG("setting up make request function");
         blk_queue_make_request(dev->sd_queue, snap_mrf);
 #endif
+#if defined HAVE_GD_OWNS_QUEUE
         set_bit(GD_OWNS_QUEUE, &dev->sd_gd->state);
-
+#endif
         // give our request queue the same properties as the base device's
         LOG_DEBUG("setting queue limits");
         blk_set_stacking_limits(&dev->sd_queue->limits);