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wrote: > On 4/20/26 10:47 AM, Mike Christie wrote: >> On 4/20/26 11:45 AM, Bart Van Assche wrote: >>> On 4/17/26 3:57 PM, Mike Christie wrote: >>>> qedi supports a total of can_queue commands over all queues so set >>>> host_tagset when multiple queues are used. >>>> >>>> Signed-off-by: Mike Christie >>>> --- >>>>   drivers/scsi/qedi/qedi_main.c | 2 ++ >>>>   1 file changed, 2 insertions(+) >>>> >>>> diff --git a/drivers/scsi/qedi/qedi_main.c b/drivers/scsi/qedi/ qedi_main.c >>>> index 227ff7bd1bdc..0be0a9f30ee2 100644 >>>> --- a/drivers/scsi/qedi/qedi_main.c >>>> +++ b/drivers/scsi/qedi/qedi_main.c >>>> @@ -657,6 +657,8 @@ static struct qedi_ctx *qedi_host_alloc(struct pci_dev *pdev) >>>>       qedi->max_sqes = QEDI_SQ_SIZE; >>>>       shost->nr_hw_queues = MIN_NUM_CPUS_MSIX(qedi); >>>> +    if (shost->nr_hw_queues > 1) >>>> +        shost->host_tagset = 1; >>>>       pci_set_drvdata(pdev, qedi); >>> >>> Why "if (shost->nr_hw_queues > 1)"? It is safe to set host_tagset even >>> if shost->nr_hw_queues == 1. See e.g. "[PATCH] ufs: core: Use a host- >>> wide tagset in SDB mode" (https://lore.kernel.org/linux- scsi/20260116180800.3085233-1-bvanassche@acm.org/). >>> >> But you can't do batching with host_tagset right? > > Batching? Does this refer to struct io_comp_batch or perhaps to another > batching feature? > I was talking about when we unplug a queue we try to allocate the tags/requests in a batch. But, ignore my comment. I mixed up BLK_MQ_F_TAG_QUEUE_SHARED and BLK_MQ_F_TAG_HCTX_SHARED. I'll fix my patch.