On 4/6/20 12:37 PM, Weiping Zhang wrote:
This patch add a new member nr_allocated_map_rqs to the struct blk_mq_tag_set to record the number of maps and requests have been allocated for this tagset. Now there is a problem when we increase hardware queue count, we do not allocate maps and request for the new allocated hardware queue, it will be fixed in the next patch. Since request needs lots of memory, it's not easy alloc so many memory dynamically, espeicially when system is under memory pressure. This patch allow nr_hw_queues does not equal to the nr_allocated_map_rqs, to avoid alloc/free memory when change hardware queue count.
It seems to me that patches 6 and 7 combined fix a single issue. How about combining these two patches into a single patch?
Thanks, Bart.
