Re: [PATCH 0/2] Limit number of hw queues by nr_cpu_ids for virtio-blk and virtio-scsi

ping? Thank you very much! Dongli Zhang On 03/27/2019 06:36 PM, Dongli Zhang wrote: > When tag_set->nr_maps is 1, the block layer limits the number of hw queues > by nr_cpu_ids. No matter how many hw queues are use by > virtio-blk/virtio-scsi, as they both have (tag_set->nr_m

Re: [PATCH V4 1/7] blk-mq: grab .q_usage_counter when queuing request from plug code path

hen queue can > be freed during the above blk_mq_run_hw_queue(). > > Fixes the issue by grab .q_usage_counter before calling > blk_mq_sched_insert_requests() in blk_mq_flush_plug_list(). This way is > safe because the queue is absolutely alive before inserting request. > > Cc: D