Re: [PATCH 2/5] blk-mq: introduce BLK_MQ_F_GLOBAL_TAGS

2018-02-05 Thread Ming Lei
On Mon, Feb 05, 2018 at 07:54:29AM +0100, Hannes Reinecke wrote: > On 02/03/2018 05:21 AM, Ming Lei wrote: > > Quite a few HBAs(such as HPSA, megaraid, mpt3sas, ..) support multiple > > reply queues, but tags is often HBA wide. > > > > These HBAs have switched to use

Re: [PATCH 2/5] blk-mq: introduce BLK_MQ_F_GLOBAL_TAGS

2018-02-04 Thread Hannes Reinecke
On 02/03/2018 05:21 AM, Ming Lei wrote: > Quite a few HBAs(such as HPSA, megaraid, mpt3sas, ..) support multiple > reply queues, but tags is often HBA wide. > > These HBAs have switched to use pci_alloc_irq_vectors(PCI_IRQ_AFFINITY) > for automatic affinity assignment. > > Now