Re: [PATCH 3/4] scsi: Avoid that .queuecommand() gets called for a quiesced SCSI device

2018-01-08 Thread Hannes Reinecke
On 01/08/2018 07:50 PM, Bart Van Assche wrote: > Several SCSI transport and LLD drivers surround code that does not > tolerate concurrent calls of .queuecommand() with scsi_target_block() / > scsi_target_unblock(). These last two functions use > blk_mq_quiesce_queue() / blk_mq_unquiesce_queue() for

[PATCH 3/4] scsi: Avoid that .queuecommand() gets called for a quiesced SCSI device

2018-01-08 Thread Bart Van Assche
Several SCSI transport and LLD drivers surround code that does not tolerate concurrent calls of .queuecommand() with scsi_target_block() / scsi_target_unblock(). These last two functions use blk_mq_quiesce_queue() / blk_mq_unquiesce_queue() for scsi-mq request queues to prevent concurrent .queuecom