On Sat, Sep 05, 2020 at 06:22:10PM -0700, Bart Van Assche wrote: > Hi Jens, > > The SCSI runtime suspend and domain validation mechanisms both use > scsi_device_quiesce(). scsi_device_quiesce() restricts blk_queue_enter() to > BLK_MQ_REQ_PREEMPT requests. There is a conflict between the requirements > of runtime suspend and SCSI domain validation: no requests must be sent to > runtime suspended devices that are in the state RPM_SUSPENDED while > BLK_MQ_REQ_PREEMPT requests must be processed during SCSI domain > validation. This conflict is resolved by reworking the SCSI domain > validation implementation. > > Hybernation and runtime suspend have been retested but SCSI domain > validation not yet. > > Please consider this patch series for kernel v5.10. > > Thanks, > > Bart. > > Alan Stern (1): > block: Do not accept any requests while suspended > > Bart Van Assche (8): > block: Fix a race in the runtime power management code > ide: Do not set the RQF_PREEMPT flag for sense requests > scsi: Pass a request queue pointer to __scsi_execute() > scsi: Rework scsi_mq_alloc_queue() > scsi: Do not wait for a request in scsi_eh_lock_door() > scsi_transport_spi: Make spi_execute() accept a request queue pointer > scsi_transport_spi: Freeze request queues instead of quiescing > block, scsi, ide: Only process PM requests if rpm_status != RPM_ACTIVE I don't know enough about the IDE subsystem to judge patches 2 or 8. For patches 3 - 7: Reviewed-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> Alan Stern
