Hi Jens, These three patches are what I came up with while reading block layer code in preparation of the patch series for improving zoned write performance. Please consider this patch series for kernel v5.20. Thanks, Bart. Changes between v2 and v3: - Explained the "why" of patch 3/3 in its commit message as requested by Jens. Changes between v1 and v2: - Modified patch 3/3 as suggested by Ming Lei. Bart Van Assche (3): blk-iocost: Simplify ioc_rqos_done() block: Rename a blk_mq_map_queue() argument block: Make blk_mq_get_sq_hctx() select the proper hardware queue type block/blk-iocost.c | 2 +- block/blk-mq.c | 2 +- block/blk-mq.h | 12 ++++++------ 3 files changed, 8 insertions(+), 8 deletions(-)