Re: [PATCH 3/3] scsi: simplify scsi_stop_queue()

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On 6/2/23 09:38, mwilck@xxxxxxxx wrote:
@@ -2910,6 +2904,13 @@ scsi_target_block(struct device *dev)
  					device_block);
  	else
  		device_for_each_child(dev, NULL, target_block);
+
+	/*
+	 * SCSI never enables blk-mq's BLK_MQ_F_BLOCKING flag,
+	 * so blk_mq_wait_quiesce_done() comes down to just synchronize_rcu().
+	 * Just calling it once is enough.
+	 */
+	synchronize_rcu();
  }
  EXPORT_SYMBOL_GPL(scsi_target_block);

The above comment is wrong. See also commit b125bb99559e ("scsi:
core: Support setting BLK_MQ_F_BLOCKING").

Bart.




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