Re: [PATCH v5 5/7] scsi: don't wait for quiesce in scsi_device_block()

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On 6/12/23 09:50, mwilck@xxxxxxxx wrote:
scsi_device_block() is only called from scsi_target_block(), which
calls it repeatedly for every child device. For targets with many devices,
waiting for every queue to quiesce may cause a substantial delay
(we measured more than 100s delay for blocking a FC rport with 2048 LUNs).

Just call blk_mq_wait_quiesce_done() once from scsi_target_block() after
stopping all queues.

Reviewed-by: Bart Van Assche <bvanassche@xxxxxxx>



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