to probe partitions from userspace */
+	if (!ub->unprivileged_daemons &&
+	    (ub->dev_info.flags & UBLK_F_NO_AUTO_PART_SCAN))
+		clear_bit(GD_SUPPRESS_PART_SCAN, &disk->state);
 	set_bit(UB_STATE_USED, &ub->state);
 
 out_put_cdev:
diff --git a/include/uapi/linux/ublk_cmd.h b/include/uapi/linux/ublk_cmd.h
index ec77dabba45b..0827db14a215 100644
--- a/include/uapi/linux/ublk_cmd.h
+++ b/include/uapi/linux/ublk_cmd.h
@@ -311,6 +311,14 @@
  */
 #define UBLK_F_BUF_REG_OFF_DAEMON (1ULL << 14)
 
+/*
+ * If this feature is set, the kernel will not automatically scan for partitions
+ * when the device is started. This is useful for network-backed devices where
+ * partition scanning can cause deadlocks if the userspace server crashes during
+ * the scan. Users can manually trigger partition scanning later when appropriate.
+ */
+#define UBLK_F_NO_AUTO_PART_SCAN (1ULL << 15)
+
 /* device state */
 #define UBLK_S_DEV_DEAD	0
 #define UBLK_S_DEV_LIVE	1
-- 
2.47.0[PATCH 1/2] ublk: add UBLK_F_NO_AUTO_PART_SCAN feature flagMing Lei <ming.lei@redhat.com> undefinedJens Axboe <axboe@kernel.dk>, linux-block@vger.kernel.org undefined undefined undefined undefined undefined undefined“]„Ôc